Senior Backend Developer

📍 Remote friendly with office located in Mexico City

🛠️ You must Include your Github link and product examples of your work to be considered.

Cheqpay was founded by repeat fintech founders and focuses on modernizing payment processing infrastructure in Mexico. We specialize in providing secure, efficient, and user-friendly financial services that businesses rely on everyday. As we continue to grow, we're looking for top talent to join our team and help shape the future of digital payments.

About the Role

This role remote friendly and a full-time commitment. As a Senior Backend Developer at Cheqpay, you will work on developing cutting-edge payment solutions some of Mexico’s largest businesses depend on daily. You will be able to contribute to a fast paced team that regularly ships new products that are used by millions of Mexicans. You'll be expected to collaborate closely with the company’s founders, contribute to the architecture and design of our platforms, and ensure the delivery of high-quality, scalable software.

**

• Proficiency in technologies such as Typescript, Node.js (Hono framework), Prisma, and PostgreSQL.
• Strong architectural knowledge.
• Proven experience as a delivering web apps to production (must provide examples).
• Familiarity with Github CI/CD pipelines and modern DevOps practices.
• Familiarity with cloud platforms, ideally AWS.
• Strong understanding of software architecture and design patterns.
• Ability to work in a fast-paced, agile environment.
• Strong communication skills in both English and Spanish.

Cheqpay Products

You can view the products here 

• Client Invoicing - “Pay Center”
• eCommerce Checkout - “Cheqpay Link”

Additional Information

• Location: Hybrid in Mexico City preferred; fully remote considered.
• Working Hours: Full time.
• Contract Type: Contract to hire, with the potential for permanent placement.
• Start Date: ASAP
• Interview Process:
  • Technical interview with the Head of Engineering.
  • Optional cultural fit interview.

We are currently interviewing , so if you are a motivated developer looking to make an impact in the fintech industry, we want to hear from you!

Email [email protected] to apply.

CoinGecko is looking to hire a Software Test Engineer Intern (QA) to join their team. This is an internship position that can be done remotely anywhere in Malaysia or Singapore.

Apollo is hiring a remote Senior Customer Success Engineer - West US. This is a full-time position that can be done remotely anywhere in the United States.

Apollo - We help developers build great apps.

LifeAnalytics Co,,, Ltd.

Recruiting full stack and image processing researchers (life science/digital pathology field)

[Job details]

• Analysis and processing of microscopic images in life science and digital pathology

• Development and optimization of web-based image analysis applications

• Research and development of new algorithms using data-driven research methods.

• Collaboration with researchers inside and outside the team.

【Qualification requirements】

• 3+ years of experience in computer science, image processing, or related field.

• Experience in developing image analysis software

• Knowledge of programming languages (react, Python, C++, etc.)

• Experience with machine learning and deep learning is a plus.

• Communication and teamwork skills.

• Highly Knowledge of open stack

[Work location]

• Fully remote work

[What we offer]

• Career advancement opportunities

【Application method】

• Please send your resume and cover letter to [Recruiter's email address].

LifeAnalytics,,,Co.LTD is looking for passionate researchers who will use cutting-edge technology to pioneer the future of rice science and digital pathology.

Job description

Overview

Duties

• Develop and maintain web applications using modern frameworks and technologies as well as support legacy projects.
• Collaborate with UX/UI designers to implement user-friendly interfaces.
• Design and optimize database schemas using Postgresql.
• Implement RESTful/GraphQL APIs for seamless integration between front-end and back-end systems.
• Participate in XP development processes
• Troubleshoot and debug applications to enhance performance and user experience.
• Stay up-to-date with emerging technologies and industry trends to continuously improve development practices.

Experience

• Proven experience in software development with a strong focus on application development.
• Proficiency in JS, Python, CSS, Django, Vue, and familiarity with AWS.
• Knowledge of Git (rebase/conflict resolution)
• Strong problem-solving skills and the ability to work independently as well as in a team environment.
• Excellent communication skills to effectively collaborate with team members and stakeholders.

Job Type: Full-time

Pay: From $50.00 per hour

Expected hours: 50 per week

Benefits:

• 401(k)
• Dental insurance
• Dependent health insurance coverage
• Disability insurance
• Flexible schedule
• Health insurance
• Life insurance
• Prescription drug insurance
• Vision insurance
• Work from home

Compensation Package:

• Hourly pay

Schedule:

• 10 hour shift
• 8 hour shift

Work Location: Remote

1. 1. Resume Screening

      • Ensure the candidate has at least 5 years of professional full-stack development experience.
      • Verify expertise in relevant technologies: JavaScript, Python, REST, GraphQL, Frontend, PostgreSQL.

   2. Online Presence & Verification

      • Review the candidate’s LinkedIn profile and online presence to confirm authenticity.
      • Ensure they are a real person with a professional background in software development.

   3. Initial Phone Interview

      • Assess English proficiency and communication skills.
      • Provide an overview of the remote position, compensation structure, and project details.

   4. Technical Screening (Video Call)

      • Conduct a light coding exercise focused on logic—the candidate should complete this in under 15 minutes.
      • Ask full-stack development questions to gauge their depth of knowledge and problem-solving ability.

   5. Code Review

      • Candidate submits code samples for evaluation.
      • Assess code quality, structure, and best practices.

   6. Team Interaction

      • Candidate participates in calls with team members, who may ask technical questions or engage in code pairing exercises.

   7. Offer Discussion & Final Steps

      • Candidate discusses terms during an offer negotiation call.
      • If agreed upon, the formal offer is sent for review and acceptance.

Salary and compensation

Benefits

💰 401(k)

🤓 Vision insurance

🦷 Dental insurance

🚑 Medical insurance

💰 401k matching

Who We’re Hiring:

We are looking for a highly skilled and passionate Senior Backend Engineer with deep expertise in data engineering and AI/LLM integrations to drive the development of our core backend systems and data platform. This is a pivotal role where you will architect and build scalable, robust, and secure backend services, data pipelines, and APIs that power our intelligent applications and agentic workflows.

You will be at the forefront of designing solutions for raw data capture, web scraping, data processing, transformation, and storage, ultimately feeding our cutting-edge AI/LLM systems.  Your expertise in Python, data engineering principles, and backend architectures will be critical as we scale our platform.

If you are a data-driven backend engineer with a passion for building high-performance systems, tackling complex data and scaling challenges, and working with AI/LLM technologies, we want to hear from you!

Why Join Us?

This is a rare opportunity to be a foundational backend and data engineering leader at a company at the forefront of AI innovation. You will have the chance to build our core backend systems and data platform from scratch, directly impacting the success of our AI-driven products. You will work with cutting-edge technologies, tackle challenging data problems, and be surrounded by a team of highly motivated engineers.  If you are ready to take your backend and data engineering skills to the next level and build the future of AI, apply now!

Key Responsibilities:

• Backend Architecture & Development (Data & AI Focus):
  • Architect, design, develop, and maintain high-performance backend systems, microservices, and robust data pipelines.
  • Lead the development of solutions for raw data capture, web scraping, data processing, cleaning, and transformation to prepare data for LLM/Agent consumption.
  • Design and implement APIs for data access, processing, and integration with frontend applications and AI/LLM systems.
  • Contribute to the overall architecture and scalability of our backend infrastructure and data platform.
• Data Engineering & Pipeline Optimization:
  • Design, build, and optimize data pipelines for efficient data ingestion, processing, and storage.
  • Work with various data storage technologies, including RDBMS, NoSQL databases, GraphDBs, and vector/RAG storage solutions.
  • Implement data quality checks and monitoring to ensure data integrity and reliability.
  • Optimize data pipelines for performance, scalability, and cost-effectiveness.
• AI/LLM System Integration:
  • Develop and maintain backend services that integrate with our AI/LLM models and agentic frameworks.
  • Design APIs and data flows to support the deployment, monitoring, and scaling of AI/LLM applications.
  • Collaborate with AI/ML engineers to optimize data pipelines and infrastructure for AI workloads.
• Security & Compliance:
  • Implement robust security best practices for backend systems and data handling, ensuring data security and system integrity.
  • Collaborate with DevOps and security teams to ensure our backend systems meet relevant security and compliance standards (e.g., NIST frameworks, SOC2).
  • Implement data access controls and security measures to protect sensitive information.
• Mentorship & Collaboration:
  • Mentor junior engineers and contribute to code reviews and architectural discussions.
  • Collaborate effectively with cross-functional teams (frontend, AI/ML, product) in an agile environment.
  • Champion best practices in backend development, data engineering, and security.

Basic Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• 7+ years of professional experience in backend development, with proficiency in Python and experience working with strongly-typed languages (such as Kotlin, Java, Go, or Rust). We value engineers who can bring experience from both dynamically-typed and statically-typed language paradigms.
• Extensive experience in data engineering principles and building robust data pipelines.
• Proven expertise in designing and developing scalable and secure backend systems and microservices.
• Familiarity with containerization (Docker, Kubernetes) and modern deployment practices.
• Proficiency with multiple persistence technologies including RDBMS, NoSQL, GraphDBs, and vector/RAG storage solutions.
• Solid understanding of cloud platforms (AWS, Azure, or GCP).

Preferred Qualifications:

• Deep experience building and deploying backend systems in regulated environments requiring NIST-53 compliance.
• Strong background in AI/LLM system integrations and agentic software development.
• Experience with web scraping technologies and data extraction techniques.
• Proven leadership in architecting enterprise-grade backend and data solutions.
• Experience with data streaming technologies (e.g., Kafka, Kinesis).
• Advanced degree in Computer Science, Data Science, or a related field.

Location: Remote, with preference for candidates in the Central Time Zone.

Who We’re Hiring:

We are seeking a highly experienced and frontend-oriented Senior Full-Stack Engineer to lead the development of exceptional user experiences for our next-generation intelligent applications. This is a pivotal role where you will architect and build cutting-edge frontends using Next.js and React, backed by robust GraphQL and RESTful APIs, to power our innovative architecture.

You will be a champion for user-centric design, driving the development of intuitive and performant interfaces across multiple client platforms (web, browser extensions, potential desktop/mobile). You will leverage modern design patterns and architectures (e.g. ViewModel patterns, Backend For Frontend (BFF)) to create efficient and scalable frontend systems.  While full-stack capabilities are essential, your passion and expertise should lean strongly towards the frontend, ensuring a seamless and engaging user experience, built with security best practices in mind and adherence to relevant compliance standards.

If you are a front-end-first full-stack engineer passionate about crafting beautiful and functional user interfaces, thrive in a collaborative environment, and are excited by the challenge of building multi-platform experiences for AI-driven applications, we want to hear from you!

Why Join Us?

This is an exceptional opportunity to be a lead frontend-focused full-stack engineer at a company building innovative AI-powered solutions. You will have the chance to define our frontend architecture, build cutting-edge user experiences using Next.js and React, and shape the way users interact with our AI agentic technology.  You will be at the forefront of building multi-platform applications and have a significant impact on our user satisfaction and product success. If you are a passionate frontend engineer ready to take on exciting challenges and build the future of intelligent user interfaces, apply now!

Key Responsibilities:

• Frontend Architecture & Development (Next.js/React Focus):
  • Architect, design, and lead the development of highly performant and scalable frontends primarily using Next.js and React.
  • Implement ViewModel design patterns to create maintainable and testable frontend architectures.
  • Develop and optimize Backend For Frontend (BFF) layers to tailor backend services specifically for frontend needs.
  • Ensure consistent and engaging user experiences across multiple client platforms (web, browser extensions, and potentially desktop/native mobile).
• API Design & Integration:
  • Architect and design well-documented and publicly consumable RESTful APIs and GraphQL endpoints for frontend applications and internal services.
  • Drive best practices for API design, versioning, and security.
  • Ensure seamless integration between frontends and backend services, optimizing data flow and performance.
• Backend Development (Node.js/TypeScript):
  • Develop and maintain robust and scalable backend services and microservices using Node.js and TypeScript to support frontend functionalities and data needs.
  • Contribute to backend architecture decisions, focusing on performance, scalability, and reliability in a Kubernetes-orchestrated environment.
    • Collaborate with backend engineers to ensure efficient data delivery and API integration.
• Multi-Frontend Environment Support:
  • Design and implement solutions to support a consistent user experience across various frontend technologies and platforms (web clients, browser extensions, and potential future platforms).
  • Address platform-specific challenges and optimize frontend performance for each environment.
  • Maintain a holistic view of the user journey across different client interfaces.
• Security & Compliance:
  • Implement robust frontend security best practices to ensure application security and protect user data.
  • Collaborate with security and DevOps teams to integrate security and compliance considerations into the frontend development lifecycle.
  • Participate in security reviews and proactively address potential frontend vulnerabilities, with an understanding of relevant security and compliance frameworks.
• Leadership & Collaboration:
  • Lead frontend technical discussions, contribute to full-stack architectural decisions, and mentor junior frontend engineers.
  • Collaborate effectively with product managers, designers, and other engineers in an agile environment.
  • Champion best practices in frontend development, code quality, and user experience.

Basic Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• 7+ years of professional experience in frontend-focused full-stack software development.
• Deep expertise in modern frontend development with Next.js and React.
• Strong understanding and practical experience implementing ViewModel design patterns.
• Proven experience designing and consuming RESTful APIs and/or GraphQL APIs.
• Experience building and deploying applications for multiple frontend platforms (web, browser extensions, etc.).
• Solid proficiency in backend development with Node.js and TypeScript.
• Experience with containerization (Docker, Kubernetes) and CI/CD pipelines.

Preferred Qualifications:

• Experience implementing Backend For Frontend (BFF) architectures.
• Experience working in regulated environments or projects with security and compliance requirements.
• Familiarity with backend technologies beyond Node.js (e.g., Python, ORMs).
• Experience designing scalable data product frontends.
• Exposure to AI/LLM technologies and building AI-driven user interfaces.
• Contributions to open-source frontend projects or active participation in the frontend developer community.

Location: Remote, with a preference for candidates in Minnesota or the Central Time Zone.

Omada Health is hiring a remote AI Security Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Omada Health - Inspiring and engaging people in lifelong health, one step at a time.

Zoom is hiring a remote Machine Learning Engineer. This is a full-time position that can be done remotely anywhere in India.

Zoom - Modern enterprise video communications.

Lido is looking to hire a Senior QA Engineer to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

In this role, you will work across all parts of our core platform to add and improve its functionality. This spans from UIs like composing complex data objects to improving the flow engine backend to providing consistent interfaces for AI agents.

Building integrations is hard and building platform for building integrations is hard squared. You need be great at not just designing and implementing complex code structures, but also making them simple and easy to use for other developers.

This job will give you challenging tasks with a lot of autonomy, top-of-market compensation, and meaningful equity in the company.

Key Responsibilities:

• Planning and executing tasks and projects that improve Integration App core platform.
• Design and implement API and SDKs used internally and by our customers.
• Working with Solutions team to understand where the improvements are needed the most.
• Participating in documenting the areas of the product you touch.

Requirements:

• Proven experience building simple tools for solving complex engineering problems.
• Great working knowledge of Typescript.
• Decent working knowledge of React.
• Excellent written and fluent spoken English.

We value autonomy, proactive alignment, and focus on getting shit done every single day. We hire people who can manage themselves and give you a lot of freedom. We are a fully remote company that invests in building personal relationships to enable effective high-velocity teamwork. We don't spare resources on keeping you happy and productive and don't stand in your way - and we expect you to use this freedom well.

GitLab is hiring a remote Support Engineer (EMEA). This is a full-time position that can be done remotely anywhere in EMEA.

GitLab - A single application for the entire DevOps lifecycle.

QuickNode is looking to hire a Senior Website Developer to join their team. This is a full-time position that can be done remotely anywhere in Portugal.

Hi! We’re Search Atlas Group, a SEO software company, focused on engineering products and services that help websites improve their performance on Google. We are a rapidly growing organization with clients from Fortune 500 companies to leading Silicon Valley tech startups, and we're looking to bring on a more Backend Engineers to help us propel our growth.

Company Tech Stack

• Backend: Django, Python 3, Docker Compose
• Frontend: Typescript, ReactJS + NextJS Framework
• DevOps: GCP, Kubernetes, ArgoCD, GitLab
• DBs: Postgres, ClickHouse, Redis
• Scrum: Gitlab Boards
• Local Development Environments: Mac OS or Linux

Job Description

We are looking for full stack, frontend, and backend engineers with strong experience in Python and Django frameworks. In this role you will be initially assigned to one of our product teams and help your team of 5-6 people build new product features!

**Backend Python/Django candidates must have:

• Strong experience with Python - 5+ years
• Experience with Django Rest Framework- 5+ years
• Experience writing test cases and TDD
• Experience with MySQL or Postgres- 3+ years
• Knowledge of Scrum
• Basic knowledge of Flake8 code quality
• Frontend experience with ReactJS & Typescript is a nice bonus!

**Benefits

• 11 days PTO

**Salary

• $2,000-$4,000/USD monthly

**Life at Search Atlas Group

At Search Atlas Group, we are committed to enjoying life as we are to delivering best-in-class services and software. From community volunteer days, socially conscious initiatives, and team lunches and outings, our office reflects our team’s erse interests.

We’re a growing team of erse professionals, however, we all share the same goals: to be a part of a company that’s on the edge of digital marketing, to make the world a better place, and to have fun doing it. Our team culture is one of fast-paced innovation, where each person is empowered to take on their own ambitious projects, with the support of their teammates. We’ve got plenty of perks, but the biggest one is working with other energetic high-achievers.

We are very proud of the kind, inclusive, and collaborative company culture we have built and have been very lucky to be recognized by both national and local industry leaders:

• 2023 + 2022 Inc. 5000 List of the Fastest-Growing Companies in America
• Nevada’s Top Workplaces - #1 Small Business (Under 150 Employees), Best New Ideas
• Best Start-Up Agency (U.S. Search Awards)
• Top B2B Companies (Clutch)
• Inc’s On The Rise and Best Places to Work (Inc. Magazine)
• Great Place to Work Certified (Great Place to Work)

**Here's a look into our core values:

_1. Collaborative and Highly Engaged

_Work is where we invest a big chunk of our lives. And hey, we're all about making that time awesome! Picture this: we're not just coworkers; we're like a squad that's always got each other's backs. We're all about cheering each other on, sharing what we know, and picking each other up when things get messy. Plus, we're big on being real with each other, so there's no room for office drama or gossip. We're all about that good vibes-only vibe!

_2. Pursues Excellence

_We're not just about doing our jobs; we're on a mission to master our craft. With a growth mindset and a desire to learn and grow, we're relentless in our pursuit of excellence. Mediocrity? Nah, not our style. We're all about raising the bar and becoming the absolute best in our field. Smashing goals? It's our fuel. And we do it all together, thriving on shared success.

_3. I can figure it out/Google it attitude

_Hey, nobody's got all the answers, right? That's why our team rocks - because they're all about that thirst for knowledge and the know-how to quench it. Thanks to the vast wonders of the internet, there's practically nothing we can't figure out. Stumped on something? No sweat, just e into the Google pool!

_We're a crew of go-getters, always ready to tackle challenges head-on. While we thrive on collaboration, we're also no strangers to taking the reins and finding solutions independently.

_4. Innovative

_We're all about agility, evolution, and innovation. Flexibility is our middle name—we're constantly refining, experimenting, and pushing boundaries. New ideas? Bring 'em on! Creativity is our secret sauce, and thinking outside the box is just how we roll. Forget about the status quo; we're all about embracing change. We're not attached to an old way of doing things - We're attached to winning

_5. Student Mentality

_We dedicate ourselves to uplifting each other and pushing Search Atlas onwards and upwards (to the moon!). Mistakes and rough days happen to everyone, but we approach them with understanding and trust in each other's good intentions. Our team remains grounded and committed, persistently striving to improve. Mistakes are opportunities for growth; we embrace them, learn from them, and continually evolve as a result.

**Working at Zamp

What We value:

• Stability
  • Everything we build is intentional and thought out. We build knowing that we’ll be working on this code for years. We index on quality over speed. Our tech reflects our love for stability in that we use typescript heavily and write tests thoroughly. 
•  Iteration
  • Much like a good essay each PR requires at least 2 reviewers and involves rounds of revision and improvement. We embrace this and the challenges that come with it.
• Learning
  • None of us have arrived. We want to keep learning, experimenting and developing our own skills and our technology over time. Anyone willing to make a case for a new upgrade is heard.
• Async work and communication
  • We have very few meetings. We embrace JOMO (The joy of missing out). This allows for deep focus and we want as much flow in our work as possible. This requires commitments from the team to deliver and provide feedback frequently and we depend on one another to get things done.

You’ll hate it here if:

• You see your code as your own property and are therefore defensive of your work and ideas 
  • Pride gets in the way of progress and we are all learning. 
• You need someone to tell you how to spend your time at work
  • We are all adults and are not here to babysit.
• Are easily offended 
  • We value direct clear communication without sugar coating.   
• You live for the thrill of code slinging
  • There is a time and place for being a cowboy but dealing with financial data is not the time. 

Our tech: NextJS focused, with some event driven flair thrown in. Really focus is on strongly typed TypeScript—you need to bleed types. TypeScript, NextJS, and database skills are all wins. 

Senior Full-Stack Engineer:

This role requires being a member of a team that is highly collaborative. You will own projects and review code for your team as they own their own projects. Looking for someone who wants to build software and has been doing it for at least 10 years. We prefer Next.js experience, but any strongly typed experience will be considered.

Job Title: Distributed Systems Engineer

**Edge is shaping the future of Web3 with decentralised infrastructure, built by a highly skilled, fully remote team, delivering unparalleled speed, security, and efficiency.

Key Responsibilities:

• Develop and maintain RESTful APIs and backend services using Node.js
• Design and implement robust backend systems, including those handling blockchain, distributed computing, fault-tolerant networking, and high-volume data services
• Prototype experimental features and products—such as decentralised video streaming or AI-driven tools—end-to-end
• Collaborate with cross-functional teams to define, design, and deliver new features
• Troubleshoot and debug complex backend issues focusing on reliability and performance
• Design and implement database structures using ArangoDB
• Research emerging trends in Web3, blockchain, and AI/LLM tech to inform new solutions
• Maintain clean, documented codebases using Git & GitHub

Required Skills and Experience:

• Deep expertise in Node.js and building RESTful APIs
• Ability to break down complex problems into clear, actionable steps
• Experience prototyping or experimenting with modern AI & LLM technology
• A drive to tinker, research, and ship innovative ideas
• Skill in writing clean, maintainable, well-documented code
• Excellent problem-solving and debugging skills
• Strong communication and collaboration skills
• Clear communication and teamwork skills in a remote setting

Bonus Skills and Experience:

• Knowledge of web security best practices
• Familiarity with agile workflows
• Technical familiarity with blockchains & cryptocurrencies
• Experience with server management and Linux systems
• Knowledge of database management

If you’re passionate about distributed systems and eager to work with a highly skilled global team pushing the boundaries of decentralised infrastructure, bring your skills to Edge. Submit your resume and a portfolio showcasing your work to [email protected]  and include the position Distributed Systems Engineer in the subject.

Job Title: Frontend Web Developer

**Edge is shaping the future of Web3 with decentralised infrastructure, built by a highly skilled, fully remote team, delivering unparalleled speed, security, and efficiency.

Key Responsibilities:

• Lead implementation of web application frontends to an extremely high standard
• Develop and maintain web applications using Vue & Node.js
• Design and implement database structures using ArangoDB
• Collaborate with cross-functional teams to define, design, and deliver new features
• Ensure high performance, responsiveness, and security of web applications
• Troubleshoot and debug issues in the development environment
• Maintain version control using Git & GitHub

Required Skills and Experience:

• Strong proficiency in Node.js & Vue
• Unquestionable attention to detail when it comes to both design & code
• Experienced understanding of HTML, CSS, and JavaScript
• Experience with responsive web design and cross-browser compatibility
• Familiarity with version control using Git & GitHub
• Ability to write clean, maintainable, and well-documented code
• Excellent problem-solving and debugging skills
• Strong communication and collaboration skills
• Ability to work well in a small, fully remote team

Bonus Skills and Experience:

• Understanding of web security best practices
• Familiarity with agile development methodologies
• Experience with ArangoDB or similar NoSQL databases
• Technical familiarity with blockchains & cryptocurrencies
• Experience with server management and Linux systems
• Knowledge of database management

If you’re passionate about Web3 and eager to work with a highly skilled global team pushing the boundaries of decentralised infrastructure, we’d love to hear from you. Please submit your resume and a portfolio showcasing your work to [email protected] and include the position Frontend Web Developer in the subject.

About CoW DAO

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

About the Role

Location: We are a fully remote team, and although we hire almost globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time

Please note we’re not hiring from the US, Australia, or New Zealand

Position: Full-time contractor

We’re looking for an experienced Backend Team Lead who will manage and guide our engineering team while also being highly technical. This person will help resolve problems, offer mentorship, and ensure the team delivers clean, maintainable code while avoiding over-complication. You’ll work closely with our Tech Lead, collaborating on both high-level technical decisions and hands-on execution to drive the team’s success.

This position is a mix of technical expertise and people management—ensuring that the team has everything they need to succeed, both technically and personally.

What you will do

• Lead, support, and mentor the backend team: Guide team members in developing their technical skills, improving performance, and overcoming challenges while providing mentorship, feedback, and opportunities for career growth
• Encourage clean and simple solutions: Foster a development culture that prioritizes simplicity, efficiency, and streamlined workflows to enhance productivity and maintainability
• Code reviews and technical guidance: Perform code reviews, provide constructive feedback, and ensure that the team’s code adheres to best practices and high-quality standards
• Work closely with the Tech Lead: Collaborate closely with the Tech Lead to support the team in implementing solutions, overcoming obstacles, and ensuring smooth development processes
• Problem-solving: Identify roadblocks or inefficiencies in the team’s processes and help resolve them in a way that aligns with CoW’s long-term goals
• Collaborate with cross-functional teams: Work closely with product, research, and other engineering teams to ensure smooth delivery of features and high-quality results

Our Tech Stack

• Backend Code: Rust, Tokio, Cargo, Git (https://github.com/cowprotocol/services)
• Infrastructure: Pulumi, AWS, Docker, Kubernetes, Grafana, Prometheus, Elasticsearch, Flux
• Other codebases: Typescript, Python, Solidity

Who you are

• Technical expertise: You have experience in backend development (languages such as Rust, Go, Python, etc.) and building distributed systems. While Web3 experience is a plus, it’s not a requirement.
• People-oriented leader: You have experience leading teams, providing mentorship, and fostering a growth-oriented environment. You know how to motivate people, resolve conflicts, and build trust within a team
• Tech-Savvy Leader: You can step in and help with complex technical challenges, but your main focus is on the people and processes
• Simplifying Solutions: You care about and understand the importance of keeping things simple and ensuring that the team follows best development practices
• You work well with others: You have a collaborative mindset and can work with both technical and non-technical team members and ensure everyone is aligned with the team’s goals
• Code quality: You are experienced in code reviews and are passionate about helping team members improve through constructive feedback
• Remote team leadership experience: As a remote-first company, we need a Team Lead with a strong track record of managing fully remote teams, fostering collaboration, and maintaining high engagement and productivity across different time zones
• Excited about web3: While you don’t need prior web3 experience, you’re eager to explore the space, especially with EVM chains, and learn more about DeFi and blockchain technologies

What we can offer you

• Flexible work environment: Join our hub in Lisbon or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Enjoy opportunities to connect with the rest of the team through regular trips
• Conference allocation: Stay up-to-date with ecosystem advancements using our conference budget
• Learning budget: Use our learning budget to support your higher ambitions
• Hardware budget: Take advantage of a hardware budget for acquiring necessary equipment
• Make an impact: You are joining a startup where you can make a huge difference. Your work matters!
• Flat hierarchies mean fewer processes and bureaucracy - see more of your ideas come to life!
• Flexible work and vacation times: Prioritize work-life balance through our robust flexible work policy and vacation allowance
• Growth: If you’re someone who loves taking the initiative and getting things done, CoW offers lots of opportunities for your inidual growth

Referral Program

Earn 6.000 USDC or USD with the refer-to-earn program. More details here.

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our erse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.

About the role

We are seeking a Backend Engineer with expertise in distributed systems to expand fault-tolerance and reliability characteristics of our blockchain automation, relaying, and indexing services. In this role, you will be responsible for proactively identifying reliability and functional problems in day-to-day operation of our stack, design and implement long-term solutions, as well as short-term mitigations. You will be looking after backend applications that facilitate cross-chain protocol workflows, such as asset transfer and generalized message passing, while ensuring that our systems are fault-tolerant and highly available.

Your responsibilities

• Reliability: Broadening and deepening observability as necessary to proactively identify functional and reliability issues, coming up with long-term solutions while also mitigating short-term impact.
• Diagnostics: Doing detective work investigating cross-chain and single-chain workflows, understanding complex behaviours and inventing optimal tweaks or improvements.
• Network Liveness: Our team builds and operates the execution layer of the Axelar Network - we are responsible for ensuring every transaction on the network is delivered quickly and reliably.
• System Implementation: Build highly reliable and scalable backend components for blockchain indexing and cross-chain protocols. Develop microservices that operate across erse execution environments, including Kubernetes and AWS Lambdas.
• Distributed Systems: Leverage your expertise in distributed systems to ensure fault tolerance, graceful failure handling, and transparent recovery across our services.

Your profile

• Strong experience working with distributed systems at scale.
• Deep knowledge of fault tolerance in distributed systems and building software that fails gracefully and recovers transparently.
• Experience working with distributed messaging frameworks (RabbitMQ, AMPQ, or similar) and message driven applications.
• Experience building and orchestrating microservices running in different execution environments like Kubernetes and AWS lambdas.
• We use GoLang, Terraform, AWS in our day-to-day work. You may not be an expert with all of these technologies, but we are looking for somebody with strong skills with some of them or with transferable experience.

Why us?

• Autonomous, distributed environment with the opportunity to work collaboratively in a erse team across the world.
• The scope to contribute to high impact work and really make a difference in a decentralized protocol.
• The chance to challenge yourself whilst learning heaps of stuff in the process.
• Unlimited time off throughout the year to rest and recharge.
• Competitive compensation with stock options, experiencing growth from the initial phase.

About us

Interop Labs builds interoperability technology.

Interoperability between blockchains is crucial technology infrastructure for the growth of Web3 and the advancement of internet technology as a whole. Interop Labs is the initial developer of Axelar Network - the programmable Web3 interoperability platform, scaling the next generation of internet applications to billions of users. Axelar network’s key attributes are programmability, security and scalability.

Axelar has raised over $100 million from leading VCs including DCVC, Galaxy, Polychain, Dragonfly, Coinbase, and more. Its erse partner ecosystem spans industry heavyweights such as Ripple, Circle, dYdX, Uniswap, JPMorgan, Deutsche Bank, Microsoft, and others—underscoring Axelar’s unique market position and opportunity in unifying stacks between traditional finance and decentralized ecosystems. Axelar protocol was founded by Sergey Gorbunov (MIT PhD, UWaterloo Professor) and Georgios Vlachos (MIT MSc, Math Gold Medalist), who previously helped to build and launch Algorand.

We are looking for an exceptional Chief Technology Officer (CTO) to lead the development of a cutting-edge Web3 influencer marketing platform. This is a high-intensity, hands-on role for someone who is deeply committed to building a scalable and innovative product—not for those looking for a 9-to-5 job.

Requirements From the Start:

• Flawless English—both written and spoken. Clear communication is a must.

• Ability to work in the CET time zone—we need someone who can fully align with our team and workflow.

• Willingness to work hard and be hands-on—this is not just a leadership role; you must actively contribute to coding and technical problem-solving.

The ideal candidate has a strong background in Web3 and Web2 technologies, experience in scaling SaaS or marketplace platforms, and a strategic mindset to drive technical innovation. You will oversee smart contract development, platform architecture, and the transition from an external MVP team to an in-house tech team.

Key Responsibilities

1. Platform Development & Technical Strategy

• Oversee the development and scaling of a Web3-enabled influencer marketing platform.

• Define the technical roadmap for V1 & V2, focusing on automation, AI-driven analytics, and fiat integration.

• Ensure seamless integration of smart contract escrow payments, campaign management, and analytics tools.

• Be hands-on with coding and lead by example.

2. Smart Contract & Blockchain Architecture

• Collaborate with Web3 developers to build secure and efficient smart contract solutions for payments and OTC deals.

• Oversee a smart contract audit to ensure security and regulatory compliance.

• Optimize transaction efficiency and minimize gas fees for user interactions.

3. In-House Development Team Formation

• Recruit, onboard, and manage an in-house development team (2 frontend, 2 backend, 1 DevOps).

• Transition from external MVP developers to an internal tech team for long-term growth.

• Implement agile development processes for continuous iteration and platform enhancements.

4. AI & Data Optimization (Future Roadmap)

• Develop AI-powered influencer matching & campaign analytics for automated insights.

• Build advanced reporting and analytics tools to provide brands with detailed campaign performance data, engagement tracking, and conversion insights.

• Integrate fraud detection mechanisms to identify fake influencers and low-quality engagements.

• While the initial focus is a web-based platform, we may develop a mobile app in the future.

5. Technical Leadership & Compliance

• Work alongside legal and compliance teams to ensure KYC/AML integration and regulatory adherence.

• Maintain a high-performance and scalable infrastructure for influencer-brand interactions.

• Drive technical due diligence for future expansion into fintech, AI, and Web3 verticals.

Required Skills & Experience

• 10+ years in software development, with at least 3+ years in a CTO, Lead Engineer, or similar leadership role.

• Experience building & scaling a SaaS, marketplace, or fintech platform.

• Deep understanding of smart contracts (Solidity, Rust) and blockchain infrastructure (Ethereum, Solana, L2s, etc.).

• Perfect English—you must be able to clearly articulate technical concepts to non-technical stakeholders.

• Ability to work in the CET time zone—this is mandatory.

• Proficiency in backend development (Node.js, Python, Go) and frontend frameworks (React, Vue.js, Next.js).

• Experience with cloud architecture & DevOps (AWS, GCP, or similar).

• Strong problem-solving mindset and willingness to work hard and be hands-on with coding.

Preferred Qualifications:

• Experience in AI/ML-driven analytics.

• Previous experience working in Web3, DeFi, or fintech industries.

Why Join?

• Lead the development of a next-generation Web3 marketplace in a high-growth industry.

• Equity compensation and competitive salary for a long-term leadership role.

• Work with seasoned professionals in branding, marketing, and business development.

• Be at the forefront of Web3 marketing innovation, shaping the future of influencer engagement.

• No bureaucracy, no slow-moving corporate culture—just a team of builders creating something impactful.

If you’re looking for a 9-to-5 job, this is not for you. We need builders who care deeply about creating something exceptional and are willing to put in the effort to make it happen.

Salary and compensation

Benefits

🌎 Distributed team

🏖 Paid time off

🥧 Pay in crypto

💰 Equity compensation

Company Culture: At Freeman's|Hindman we believe that people are enriched and energized when they are surrounded with objects of significance and meaning. Freeman's|Hindman is one of the leading and fastest growing fine art auction houses in the U.S. Our values are evident in how we approach the marketplace, providing unmatched service, a focus on excellence, and holding the utmost respect for our clients and the items we steward. As a globally recognized brand, we conduct over 150 auctions each year for everything from contemporary paintings and fine jewelry to French furniture and rare books. With 6 salerooms and business offices in Atlanta, Boston, Chicago, Cincinnati, Cleveland, Denver, Detroit, Miami, Milwaukee, Naples, New York, Palm Beach, Philadelphia, Richmond, Scottsdale, St. Louis, and Washington, DC, we stay locally relevant while passionately catering to our global sellers and buyers. Our Engineering Team is remote-first, with teammates spanning multiple continents. We value the ability to work asynchronously, as well as opportunities to work directly with each other via pair programming and daily scrums. We consistently make room in our iterations for both tech debt paydown and those features that sometimes perpetually slip through the cracks. We are humble. Our work is in service of the wider company.

Position Summary: The Lead Software Engineer is the technical leader of a small team focused on building and maintaining a software platform to manage auction business. The position is responsible for all aspects of development from database architecture to feature building to testing to continuous deployment management to team mentoring.

Responsibilities:

• Lead and mentor a team of remote engineers. 
• Foster a collaborative and high-performance software engineering environment. 
• Facilitate communication and alignment across the Engineering team, Product Management, and internal stakeholders. 
• Develop server-side logic and corresponding tests in Ruby (on Rails). 
• Develop front end interfaces and corresponding tests with Vue.js to deliver a smooth and intuitive end user experience.
• Participating in and overseeing code review, helping to enforce a high level of test coverage as code changes. 
• Participate in end-to-end quality assurance for all features and bug fixes. 
• Identify technical bottlenecks and root causes of bugs. 
• Manage DevOps deployments of backend and web applications. 
• Maintain infrastructure-as-code in Terraform. 
• Ability to adapt the roadmap and team priorities as business needs change over time. 
• Demonstrate appreciation for art and design. 
• Passionately support the Freeman's|Hindman brand in daily interactions with clients and Freeman's|Hindman team members. 
• Follow the principles of client interaction guidelines in all communications. 
• Other duties as assigned.

Education & Experience:

• Bachelor's Degree in Computer Science or Engineering preferred but not required. 
• Demonstrated leadership skills and ability to align a team towards common goals. 
• 5+ years of front and back-end development experience. 
• Experience and solid knowledge of Ruby on Rails monolith projects and any of Vue, React or Angular. 
• Familiarity with shepherding and growing RESTful APIs. 
• Comfortable in a UNIX development and hosting environment. 
• Experience with maintaining a continuous deployment web applications. 
• Experience with SQL databases and an understanding of raw SQL queries and performance. 
• Experience with RSpec or other testing framework. 
• Thorough understanding of Git.

Skills:

• Flexible; quick learner; works effectively with other engineers; collaborates with team and stakeholders on big projects; also comfortable working autonomously. 
• Communicates with transparency as a key to success. 
• Strong problem-solver.

Competencies:

• Passion for Clients and Services. 
• Effective Problem Solving. 
• Better Together – Team Focused. 
• Initiative – Self Starter Attitude. 
• Commitment to Quality.

# Introduction

We are a SaaS ticketing platform that is very excited about the future. Coming out of the pandemic, we completed an exciting evolution of our platform. This involved moving from a traditional RoR architecture to a modern "single page application" (SPA), exposing our application as a set of APIs consumed by Ember to provide a rich interactive experience.

Completing this work has allowed us to focus on new feature development. We have already seen the benefits of the new platform in terms of productivity and speed of rolling out new features.

We want to expand our backend team with new people to cover Ruby and Ruby on Rails server development to accelerate this potential and deliver an ambitious product roadmap. In terms of experience, we are looking for experienced developers who are comfortable working with a large codebase and a complex domain.

The work will be a mixture of new feature development exposed as APIs for the front-end development team and infrastructure-focused improvements on our backend.

The feature areas we focus on are significant enhancements to our CRM functionality, improvements to our public API and investment in Business Intelligence and Analytics. 

This year, a specific focus will be on building out our data and analytic capabilities using a combination of Snowflake at the data layer and Sigma for visualisation. This work will then provide a platform for integrating AI capabilities into our platform.

# Skills & Requirements

- 4+ years experience developing web applications

- Experience with programming Ruby/Rails required with the role focused on server development

- Understanding of front-end technologies: JavaScript, HTML, CSS, and JS frameworks like React/Ember are welcomed but not required

- Experience with Chef and Terraform a bonus

- Strong programming skills with a focus on clean design, well-refactored code and automated testing

- Experience with Business Intelligence and Analytics is also welcomed but  not required

- Comfortable working as part of a fully remote dev team.

# Technologies we use

- Ruby on Rails is our primary server framework evolving towards pure API server

- EmberJs is our primary front-end development framework

- JSONAPI::Resources, http://jsonapi-resources.com/, is how we are building our APIs

- MySQL / Redis are our primary storage engines

- Snowflake / Sigma are our chosen data, analytics and AI-enabling technologies

- All our servers are Ubuntu based managed through CHEF

- Deployed on AWS using Terraform for managing infrastructure

- GitHub for source code management and process support

- GitHub actions for continuous integration

# How we work

We run a lightweight process that focuses on feature-based weekly delivery. Our coordination and communication are mostly through daily 'catch-up meetings' and appropriate tools such as Linear for backlog management, Slack for communication and Git(GitHub) for source control and feature deployment through PRs and Milestones.

From a coding perspective, we strongly emphasise clean, minimal, well-refactored code backed up by a robust suite of automated tests. In addition, we use peer review for all design and development work.

In general, we strive for an approach that empowers and trusts iniduals to 'do the right thing'; as a team, we try to keep each other true to this.

# 100% Remote working

Our development team works remotely with members in Austria, Germany, Portugal, Sweden, South Africa, Ireland and the United Kingdom. Our wider organisation has people based in the United Kingdom and Ireland. Dublin is our headquarters and main office - with the core Support and Sales and Marketing teams.

Remote working has been part of our company's DNA since our founding. It offers many advantages to both Ticketsolve and its employees. This culture means you should be comfortable working as part of a fully remote team.

Important to note that time zones are a consideration for us with remote working. Our experience is that European, some Asian and East Latin American time zones are preferable, allowing for collaboration at reasonable times.

# Recruitment process

We are initially looking for resumes and portfolio examples of your work, e.g., GitHub repositories, blog articles, etc. If you do not have anything suitable, don't worry. As part of the process, we will introduce some coding tasks, e.g., code reviews, whiteboard design sessions, and pair programming.

From there, we filter down and do a series of remote interviews. We start with an introduction call to explain the project and answer questions. From there, we will have a mixture of technical and culture-fit calls. 

After this stage, we will be in a position to make a formal offer.

Please submit resumes to **[email protected]** with the subject **"Job Application"**. Please note that we will not respond to all applications due to the volume of applications; instead, we will make contact when there is a potential fit.

HyperDash, a leading trading analytics platform on Hyperliquid, is building onchain fund-of-funds infrastructure, allowing users to create personalized portfolios of traders and manage their combined risk effectively. We have already launched the beta version of our product and are currently in the process of rapid scaling.

We’re seeking a backend engineer to develop robust trading execution and risk management systems, design well-structured APIs in collaboration with our frontend team, and implement scalable data storage solutions. You’ll be instrumental in helping us serve more of our target market while maintaining our exceptional performance standards.

Interest in markets and trading is essential, as all team members contribute to product feature design. Your technical expertise combined with trading insights will directly impact our platform’s evolution and our users’ success.

Responsibilities:

• Design and implement order execution systems that can handle complex trading strategies across multiple accounts
• Create scalable data pipelines for trader performance analytics and strategy correlation metrics
• Implement monitoring and alerting systems for operational reliability

Technical requirements:

• Experience building reliable, high-throughput real-time systems
• Experience managing a distributed system on AWS
• Understanding of financial market structure concepts (order types, execution, etc.)
• Experience with database design and optimization

Culture and team fit:

• Interest in trading, financial markets and crypto is essential
• Product thinking is critical - we iterate constantly based on user feedback
• We’re a lean team that plans to say that way - being flexible with the role is key
• Interests like chess, poker, or competitive gaming would fit well

Our tech stack:

• Python
• ZeroMQ Microservice architecture with pub/sub messaging pattern
• Docker

It is an early-stage opportunity with significant upside as we are seeing real traction already. Besides that, it is also a chance to build something on the frontier that hasn’t been built before.

Compensation for this role is going to be 5-7k USD / mo depending on your experience and seniority, as well as an equity package after 2-3 month trial period.

Contact: [email protected]

Astronomer is hiring a remote Senior Frontend Engineer, Growth. This is a full-time position that can be done remotely anywhere in the United States.

Astronomer - Modern data orchestration.

Splice is hiring a remote Senior Machine Learning Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Splice - Building a creative ecosystem for music producers.

**👋 Who are we?

Nordhealth’s mission is to build software that improves the daily lives of healthcare professionals. We create tools that empower veterinary and therapy professionals to provide the best possible care experiences to their patients. Our products are used daily by over 50,000 professionals in over 10,000 clinics and hospitals annually across 30+ countries with 17+ years of experience in healthcare and veterinary software.

EasyPractice is the flagship product for the therapy unit in Nordhealth, enabling clinicians and therapists to manage their administrative work efficiently. With more than 40,000+ users and a software ecosystem touching over 2M+ people worldwide, EasyPractice is steadily growing. A key initiative is to step-by-step, as the EasyPractice platform evolves, migrate customers and users from older PMS products for EasyPractice to become our Unified PMS Platform. If you're passionate about solving problems and delivering excellent customer experiences, we might have the perfect role for you!

About the role

As a Senior Full-Stack Engineer at Nordhealth and EasyPractice, you will have the opportunity to take ownership of your tasks from inception to delivery. We value autonomy, self-awareness, and creativity in our team members. Your expertise will be crucial in shaping and implementing various exciting projects within our dynamic environment.

Your primary responsibility will be to extend and maintain the EasyPractice system which will mainly involve working with Laravel and Vue.js. 🚀

Your key responsibilities include:

• Setting high standards: Design and develop high-quality new solutions and features with Laravel Framework and Vue.js, setting the standard for code quality and best practices.

• Maintenance and optimization of our existing codebase to ensure optimal performance, scalability, and security.

• Conducting code reviews and providing constructive feedback to team members for continuous improvement.

• Collaborating seamlessly with cross-functional teams to identify and solve complex software challenges and architect innovative solutions.

• Assistance with technically advanced queries from our support tool

While these are the primary tasks, you don't need to be an expert in everything. As a senior developer you are expected to have special expertise and actively share your knowledge and insights with the team.

**Our Tech Stack

**

We’re huge fans of Laravel and the different tools in their ecosystem and our tech stack reflects that.

_Some of the technologies you will work with daily:

• **PHP / Laravel

  **

• **VueJS 2.x/3.x

  **

• **MySQL

  **

• **Bootstrap and TailwindCSS

  **

**What will help you to be successful in this role?

**Ideally, you have:

• Extensive proficiency in Laravel Framework, PHP, HTML, CSS, Vue.js, and related technologies.

• A demonstrated history of complex database design and management (MySQL, PostgreSQL, etc.).

• The ability to thrive in a remote team environment, work independently and mentor others.

• Strong problem-solving skills and passion for continuous learning.

• Adaptability and resilience in the face of challenges.

• A strong work ethic, reliability, and the capability to take ownership of your projects, ensuring their successful execution and delivery.

• Excellent communication skills, both written and verbal.

Additionally, experience in technologies such as Typescript, Docker, Automated tests, DevOps practices, CI/CD pipelines, or Modular monoliths would be a valuable asset for this role.

For this role, we are seeking colleagues that are based in Europe.

What’s in it for you?

**

**

**As a member of our team, you'll experience:

😁 A warm and collaborative atmosphere where every team member is genuinely friendly and helpful

🌍 The freedom to work from anywhere in Europe, giving you the flexibility to create your ideal work environment

🕘 The autonomy to set your own working hours, enabling you to achieve a work-life balance that suits you

💪 You’ll have a strong influence on how the product is being developed. We value your input!

✈️ Company meet-ups once a year to get to know your team members and just have a great time together!

🗺️ Being a remote company, we have colleagues working from around the world

If you relish the idea of working in a fast-growing, international setting, and you're passionate about contributing to a friendly and collaborative culture, then this could be the perfect job for you. Join us and be part of our ongoing success story. **Apply now! We'll fill the position as soon as we find the right person.

"

About the Role

We're looking for a passionate Senior UX Developer to join our innovative startup and take ownership of our product's user experience. As a key member of our team, you'll bridge the worlds of development and design, crafting intuitive interfaces that make complex AI functionality accessible and delightful to use. This is an opportunity to make a significant impact, shape our product's direction, and grow with us.

What You'll Own

* Lead the evolution of our frontend architecture and UX development strategy

* Drive our UI/UX vision forward, balancing beautiful design with technical excellence

* Build and maintain a scalable component library that will form the foundation of our design system

* Champion user-centric development practices and accessibility standards

* Mentor team members and contribute to our technical and design culture

What You'll Do

Technical Leadership

* Architect and implement sophisticated frontend solutions using React, TypeScript, and Redux

* Drive technical decisions around our frontend stack and development practices

* Create high-performance, responsive interfaces that scale

* Establish testing strategies and maintain high code quality standards

Design & UX Innovation

* Collaborate closely with stakeholders to transform complex requirements into elegant solutions

* Lead design discussions and contribute meaningful UX improvements

* Create rapid prototypes to validate design concepts

* Drive user research initiatives and translate findings into actionable improvements

What You Bring

Essential Experience

* 5+ years of professional frontend development experience

* Deep expertise in React, TypeScript, and state management (Redux/MobX)

* Proven track record of owning and delivering complex UI/UX projects

* Strong portfolio demonstrating both technical and design capabilities

* Experience with modern design tools (Figma) and design systems

Technical Skills

* Expert knowledge of modern JavaScript/TypeScript

* Advanced CSS skills and experience with modern CSS frameworks

* Strong understanding of frontend performance optimization

* Experience with frontend testing frameworks and methodologies

UX/Design Skills

* Strong eye for design and attention to detail

* Experience in UI/UX design principles and best practices

* Ability to create and maintain design systems

* Understanding of user research and testing methodologies

The Ideal Candidate

* Is passionate about creating exceptional user experiences

* Thrives in a startup environment and enjoys wearing multiple hats

* Has strong opinions about design and development, but remains flexible

* Enjoys mentoring others and contributing to team growth

* Is excited about working with AI/ML technologies

Why Join Us?

* Opportunity to shape the direction of a cutting-edge AI-powered platform

* Work with a passionate team dedicated to innovation

* Flexible remote work culture with bi-weekly team meetups in Downtown Toronto

* Competitive compensation package

* Ground-floor opportunity at a growing startup

* Real impact on product decisions and company direction

Our Work Style

We're a remote-first team that values independence and ownership, coming together every 2-3 weeks at our Downtown Toronto office for collaboration and team building. We believe in giving our team members the autonomy to drive innovation while providing the support needed to succeed.

Compensation

We offer a competitive compensation package commensurate with experience. We're looking for someone who wants to grow with us and will reward that commitment accordingly.

If you're excited about creating amazing user experiences and want to be part of a team that's pushing the boundaries of AI in fintech, we want to hear from you!

",

Who We Are:

Ethena Labs is building the first crypto-based reward-accruing synthetic dollar protocol. Arthur Hayes is a founding advisor and the team has deep experience across traditional finance and crypto engineering from firms such as Cerberus, Wintermute, BITMEX, Flow Traders, Deribit, Paradigm, GMX, Zircuit, Chainlink and Kaiko. We are backed by every major exchange and trading entity in the space.

What we are Doing:

We are building two interlinked products: a crypto-native synthetic dollar (USDe) and an Internet Bond (sUSDe) accruing rewards via a delta-neutral derivatives portfolio.

We believe creating a synthetic dollar which is not reliant on existing banking infrastructure is the single most important problem to solve and the largest opportunity in crypto today.

USDe will form the first part of a broader ecosystem of products we are building including fixed and floating rate Internet bonds and composable repo markets.

Join us!

This role must reside outside of the USA.

The Role

Ethena has quickly established itself as the fastest growing and most innovative financial product utilising digital asset technology to date. The Head of Trading Technology will own the entire trading technology stack, responsible for the overall strategy, development, and maintenance of Ethena’s trading platform. Which sits at the heart of, and powers, its flagship products: USDe & sUSD.

The role reports directly into the CTO, and includes leading a small team of trading technology engineers, collaborating with stakeholders in Trading, Risk and Ops teams. This role demands a hands-on leader with deep understanding of building trading systems. You’ll both guide your team and take a lead role in development.

Our focus is on high-quality engineering, resilient system design, development-velocity, and delivering best-in-class execution capabilities.

What You’ll Do

• Build and Own a Best-in-Class Trading System: Design and implement a robust trading platform that ensures efficient execution of large trade sizes with minimal slippage.
• Develop Market Data and Execution Capabilities: Build high-performance market data pipelines and ensure seamless integration with multiple trading venues (REST/WS, FIX, and other protocols).
• Drive New Product and Feature Development: Collaborate with quant and trading teams to develop and implement new trading strategies and execution logic.
• Foster Software Excellence: Apply modern software development best practices, such as TDD, BDD, test automation, CI/CD pipelines, and SOLID principles.
• Optimize for Performance and Resilience: Design fault-tolerant architectures with failover mechanisms to ensure high availability and reliability.
• Mentor and Grow the Team: Lead and mentor junior engineers, fostering a culture of high-quality engineering and technical excellence.

What We’re Looking For

• Engineering Leadership in Trading Technology: Proven experience leading and mentoring high-performing engineering teams within trading tech environments such as Investment Banks, Trading firms, Exchanges, or Market Makers.
• Extensive Experience in Trading Systems Development: Track record of building and supporting trading infrastructure from the ground up, including market data feed handlers, algo engines, backtesting frameworks, and execution platforms.
• Strong Software Engineering Fundamentals: Expertise in modern development practices (TDD, BDD, CI/CD, SOLID), how to write modular, clean, code, and resilient system design.
• Deep Understanding of Financial Markets: Strong knowledge of trading mechanisms, security protocols, and infrastructure management across multiple venues.
• Experience with Crypto Trading Venues and Derivatives: Hands-on experience working with centralized crypto exchanges (CEXs) and trading instruments such as perpetual swaps and deliverable futures.
• Multi-Venue Trading Experience: Understanding of order routing, trade reconciliation, and execution quality optimization across multiple trading venues.
• High-Performance System Design: Expertise in optimizing for system performance, ensuring low-latency execution, high throughput, and execution quality.
• Excellent Problem-Solving Skills: Strong ability to break down complex challenges into actionable solutions and make strategic technical decisions.
• Passion for Testing and Automation: Strong advocate for TDD, BDD, and test automation with hands-on experience in unit, integration, regression, performance, and end-to-end testing.

$250,000 - $300,000 a year

Why Ethena Labs?

• Join a forward-thinking, crypto-native company with a mission to revolutionize decentralized finance.
• Work alongside a passionate and innovative team that values collaboration and creativity.
• Enjoy a flexible, remote-friendly work environment with opportunities for growth and learning.

If you subscribe to the mission of separating the dollar from the state, then we want to hear from you!

We look forward to receiving your application and will be in touch after having a chance to review.

In the meantime, here are some links to more information about Ethena Labs to help you check us out:

• Website
• Twitter
• LinkedIn

GitBook is hiring a remote Product Engineer. This is a full-time position that can be done remotely anywhere in EU or the United Kingdom.

GitBook - Modern documentation and writing tools.

1Password is hiring a remote Developer Intern - Foundations, Design System - Summer 2025. This is an internship position that can be done remotely anywhere in Canada.

1Password - The world's most-loved password manager.

HackerRank is hiring a remote Data Engineer II. This is a full-time position that can be done remotely anywhere in India.

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Chess.com is hiring a remote Python Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Chess.com - The world's largest chess community.

About Us

Chorus One is one of the leading operators of infrastructure for Proof-of-Stake networks and decentralized protocols. Tens of thousands of retail customers and institutions are staking billions in assets through our infrastructure helping to secure protocols and earn rewards. Our mission is to increase freedom and speed of innovation through decentralized technologies.

We are a erse team of 70+ people distributed all over the globe. We value radical transparency, striving for excellence and improvement while treating each other with kindness and generosity. If this sounds like you, we’d love to hear from you.

Position Overview:

As a senior software engineer, you will join one of our engineering teams to assist in building and maintaining tools and automation to support our validator operations. We take the upstream node software from projects like Ethereum, Solana, Cosmos, or Avalanche; compile it; run it on one of our servers; and then make sure it is reliable and secure, monitor it, and keep it up to date. We do this for more than 60 blockchain networks, which means that it is not feasible to do all of this by hand. Instead, we build automation. Some of the things we do:

• Contribute to upstream software to improve observability, and build monitoring tools from scratch where none exist. The teams that build the node software are not the teams that operate this software at scale, and as such, observability is often not a first priority. We develop our own tools for on-chain and off-chain monitoring, both for short-term metrics (to alert on) and long-term metrics to measure our performance, and to support optimisation decisions.
• Build tools to track and manage our fleet of servers. We work mostly with bare-metal servers across multiple providers. This means that no vendor-specific portal is going to give us a complete overview of our infrastructure, instead we have an in-house tool that integrates with vendor APIs and gives us a central overview.
• Automate machine provisioning. Instead of working with 10+ cloud and bare metal providers’ flavor of installing Ubuntu, we build our own installer that is uniform across our infrastructure.
• Track and automate builds. Each of the 60+ networks we operate regularly releases updates. It would be tedious to manually git pull && make for every release, instead we have automation watching for new releases that automatically builds them and registers them in our package registry.
• Automate updates and failover. When we have a new package, we still need to roll it out to our fleet and restart any nodes, in a controlled manner and without downtime. For validating nodes, we also need to fail over before we restart them, and confirm the new node is healthy. To automate this, we need to have 100% confidence in our tooling, because a mistake here can lead to double-signing, which incurs a financial penalty.
• Automate snapshot creation and storage. Blockchains node software is stateful in nature: the chains are often terabytes in size. While it is possible for new nodes to sync from the p2p network, this can take days to weeks, which means it is not a suitable method when we move workloads between machines. We automate taking snapshots of this data, so we can be more flexible about what runs where, without compromising on security.

Our internal tooling:

It is written in a mix of Rust, Python, Go, and a bit of TypeScript. We use Postgres as our database of choice. We deploy our code either directly onto Ubuntu hosts, running under systemd or in Docker containers, and we also have a Kubernetes cluster running various stateless applications. Due to the erse nature of the software we run, we also have to occasionally e into codebases written in C, C++, OCaml, or TypeScript.

You can learn more about our approach to operating nodes in our Network Handbook.

Key Responsibilities

• Design and develop new features. Discuss with internal stakeholders to clarify how our next feature should look, discuss with fellow engineers how it should be implemented, and then drive implementation to completion.
• Support and collaborate. Review and discuss engineering designs, review code, help fellow engineers, and mentor them on a technical level.
• Innovation and continuous improvement. Seek to simplify, optimize, and secure our staking services and systems.
• Take part in on-call rotation approximately 2 days per month. You will be responsible for automation that manages our validators and infrastructure, including its uptime and incident response.

Job requirements

What we are looking for:

• 5+ years experience as a Software Engineer.
• Experience with operating and maintaining server-side software in production.
• Deep understanding of at least one compiled statically typed programming language such as Rust, Go, Kotlin, C++, or Haskell.
• Experience with at least one scripting language such as Python.
• Experience using SQL databases, preferably PostgreSQL.
• Strong communication skills and ownership to drive new features independently.
• Interest in blockchain technology, in particular distributed systems and consensus algorithms.
• Affinity with infrastructure and the lower levels of Linux userspace.
• You are able to work in the following time zone: Switzerland ± 6 hours.

What We Offer:

🌱 Growth & Learning

We’re committed to your development! Benefit from an annual 3,000 CHF learning budget that goes beyond just conferences—supporting your physical, emotional, and mental well-being too. Attend up to two conferences a year to e deeper into the Web3 space and connect with the community. Plus, jumpstart your crypto journey with our $1,000 Crypto Starter Kit to explore and engage with cryptocurrencies hands-on.

🤝 Collaborative Culture

Collaboration is woven into our DNA. We thrive in multiplayer settings, ensuring every voice contributes to our mission. Connect across teams through our buddy programs, regular virtual coffee chats, and biannual retreats, which offer unparalleled opportunities to build stronger relationships while tackling some of the industry’s most exciting challenges.

✈️ Retreats in Iconic Destinations

Twice a year, we bring the entire team together for all-expenses-paid retreats in inspiring locations. Past retreats have taken us to Kenya, the USA, South Korea, Switzerland, Spain, Turkey, Thailand, Dubai and Japan. Our next stop? Budapest, Hungary! These retreats are designed to recharge, connect, and spark innovation.

🏡 Work From Anywhere

Embrace remote flexibility that empowers you to work from anywhere in the world. Prefer a coworking space? We’ve got you covered with a 500 CHF/month coworking budget. And for those growing their families, enjoy paid parental leave to ensure your personal and professional lives align seamlessly.

🗣️ Radical Transparency

We practice radical candor, fostering an environment of open, honest feedback that helps us grow inidually and as a team. Expect a culture where learning from each other is not just encouraged—it’s celebrated.

💸 Compensation & Equity

We offer a competitive fixed salary in your preferred local currency or stable coins, complemented by stock options, giving you a stake in the exciting future we’re building together.

💼 Employment

We offer flexibility to suit your inidual needs. With the ability to provide local employment in over 150 countries, you’ll have access to local benefits tailored to your region. Prefer contractor status instead? That’s an option too. During the offer, we work with you to determine the best arrangement, ensuring your experience aligns with your personal and professional preferences.

✨ Curious to see what life at Chorus One is really like? Check out these videos for a behind-the-scenes look:

• Culture at Chorus One

The Company

SimplyAnalytics is a powerful spatial analytics and data visualization application used by thousands of business, marketing, and social science researchers in the United States and Canada. It comes pre-packaged with 200,000+ data variables and allows our users to create maps, charts, tabular reports, and crosstabs. We are passionate about creating outstanding software, and we believe in test driven development, continuous integration, and code review.

As a smaller company, each of our developers has an important role to play - at SimplyAnalytics, you are not just another cog in the wheel, you are an integral member of our team. You will be working on valuable features and making key decisions that impact the direction of the product and our users. In addition, we provide an excellent work-life balance, with 100% remote work, 20 personal days off, flexible work hours, a collaborative work environment, and quarterly “professional development days” to explore and share your interests with the rest of the team.

**The Role

The ideal candidate has experience working on complex single-page applications, is a self-starter, has a high level of attention to detail, is comfortable asking questions, enjoys working with talented colleagues, and has an interest in analytics and data visualization.

We are a 100% remote company. Our employees can live and work anywhere in Canada, the United States, Mexico, Central America, or South America. This is a full-time salaried position. When applying, please include a cover letter.

Responsibilities:

• Design, develop, and test features, both in-house and customer-facing
• Write modern high-quality, clean, scalable, and maintainable code
• Contribute ideas for new features or improvements to existing features
• Assist colleagues through code-review, collaboration, and troubleshooting

Required:

• 8+ years of professional software development experience on large, structured code bases using vanilla JavaScript (this is not a React, Angular, Node.js, or full-stack position)
• Strong UI development skills (CSS & HTML)
• Open to learning new technologies
• Self-starter who gets things done
• Attention to detail

Bonus:

• Experience implementing data tables, charts, graphs, or other data visualizations
• Experience working on complex analytics, data visualization, or mapping applications
• D3.js experience
• MapLibre GL JS or Mapbox GL JS experience
• Experience with geospatial, demographic, business, marketing, or health data
• Experience with TypeScript
• Comfortable using Linux CLI

Datadog is hiring a remote Frontend Staff Engineer (Accessibility) - DesignOps. This is a full-time position that can be done remotely anywhere in Portugal.

Datadog - Modern monitoring & analytics.

Company Description

Role Description**

Responsibilities

Requirements

We’re looking to hire a Senior Full-Stack JavaScript Engineer with 5+ years experience who shares our passion for great product engineering. We’re looking for someone with strong backend skills and experience of developing and deploying in a high scale environment. Bonus points if you’re able to work full stack, but not essential for the role.

While most of our customers are based in the US, our technical team operates out of Eastern Europe and Asia. Therefore, we are seeking a candidate who can collaborate effectively across these two time zones.

**

You’ll be responsible for designing and delivering new product features and improving existing ones while keeping scalability, reliability, and performance in mind.

Our infrastructure is hosted on AWS, with PostgreSQL RDS powering our database, Node.js for the API, and Vue.js with TypeScript on the frontend. We prioritize clean, maintainable, and well-tested code and are seeking someone who shares this commitment to quality.

This is a great opportunity to have major input into a fast growing SaaS app and be part of an exciting, remote-friendly company.

There’s a big product roadmap ahead of us so we’re looking to build a long term relationship with the right candidate. Please read the following requirements carefully before applying.

**

• 5+ years experience with the majority in JavaScript
• Experience deploying software and database updates in a high scale environment
• Genuine interest in writing quality, maintainable code
• Experience independently designing and implementing large pieces of a system
• Proficiency in writing tests, with a strong focus on integration testing
• Strong relational database experience, preferably with PostgreSQL
• Using Node.js to build REST APIs, ideally using koa.js or express.js
• Keeps customers in mind and proactively raises issues or possible improvements
• Experience doing code reviews
• Git / Github
• Excellent spoken and written English
• Experience working remotely

**

• Experience with ecommerce platforms like Shopify and WooCommerce
• Experience using AWS EC2, ECS, CodeDeploy
• Frontend experience with Vue.js or similar
• TypeScript
• Experience with social media APIs
• UI/UX skills with a strong focus on using the Semantic UI framework for core components.
• Experience with the Semantic UI CSS framework

**

• A great team player and communicator
• We’re seeking a team member we can trust and build a strong, friendly relationship with. We place equal importance on cultural fit and technical expertise
• We don’t expect you to know every framework or API, but we do look for someone who is eager to learn and can quickly adapt to new technologies

**

• Salary range $45,000 USD to $60,000 USD depending on experience
• Opportunity to get stock options in fast growing tech startup
• Bonuses
• Full time, fully remote position
• Flexible working hours
• Co-working space allowance
• Low meeting environment and flat team hierarchy
• Friendly team that welcomes feedback
• Great opportunity to have a big impact and for career development
• Meet up and work with the team in great locations around the world

About the Team:

Zark Lab is building foundation models for blockchain transactions and information. Our work focuses on search, retrieval, and generative modeling applied to on-chain and off-chain data. We are developing systems that enable efficient indexing, retrieval-augmented generation (RAG), and vector search for structured and unstructured blockchain datasets. Our models process billions of transactions and smart contracts across multiple blockchains, applying sequence modeling, graph-based learning, and language models to extract insights and improve data accessibility.

The team consists of former founders, senior engineers, and executives from Google, Meta, Goldman Sachs, and other leading technology and financial institutions. Our backgrounds span large-scale distributed systems, machine learning, engineering, and information retrieval, and we are focused on advancing the state of AI-driven search and computation for blockchains.

What you will do:

• Build large-scale web scraping and ingestion pipelines for on-chain and off-chain blockchain data
• Develop and optimize search architectures, integrating vector search, ANN retrieval, and ranking models
• Fine-tune LLMs for query expansion, semantic search, and retrieval-augmented generation (RAG)
• Reduce query latency through index optimization, ANN search, and distributed execution
• Scale distributed indexing pipelines for efficient storage, deduplication, and retrieval
• Optimize distributed storage and compute with Snowflake, ClickHouse, RocksDB, and vector databases
• Build scalable systems to process high-throughput blockchain transactions and queries
• Deploy and optimize cloud workloads on GCP with Kubernetes and containerized processing

You might thrive in this role if you:

• BS/MS/PhD in Computer Science or a related field.
• 5+ years of experience in AI/ML, distributed search, or large-scale data processing.
• Strong programming skills in Python, TypeScript, or Node.js.
• Expertise in database design (SQL and NoSQL) and high-throughput data systems.
• Experience with web crawling, data scraping, and large-scale ingestion pipelines.
• Knowledge of vector search, retrieval-augmented generation (RAG), and embedding models (preferred).
• Hands-on experience with GCP, Kubernetes, and Docker for cloud-scale deployment.
• Passion for blockchain, AI search, and distributed systems.

Why join us?

• Work on cutting-edge generative AI and search technologies applied to blockchain
• Solve complex challenges in large-scale indexing, vector search, and AI-powered retrieval
• Be part of a high-caliber team of former founders, engineers, and executives from leading tech and financial firms
• Competitive salary and equity opportunities
• Fully remote team with a fast-moving, high-impact culture
• Own and shape the future of AI-driven search and retrieval for Web3

If you’re excited about search, generative AI, and real-time blockchain inference, we’d love to hear from you.

Apply now or reach out for more details.

Contra is looking for a skilled Full-stack Engineer to develop and maintain scalable, high-performance web applications. If you have experience in both front-end and back-end development and enjoy building seamless user experiences, we’d love to hear from you!

Responsibilities:

• Develop, optimize, and maintain both front-end and back-end components of web applications.
• Collaborate with designers and product teams to implement user-friendly features.
• Write clean, maintainable, and efficient code.
• Ensure responsiveness, security, and performance across all platforms.
• Integrate APIs and third-party services to enhance application functionality.
• Debug and troubleshoot issues to improve system reliability.

Requirements:

• Proven experience as a Full-stack Engineer with a strong portfolio or GitHub profile.
• Proficiency in JavaScript/TypeScript and front-end frameworks like React, Vue, or Angular.
• Back-end experience with Node.js, Python (Django/Flask), Ruby on Rails, or similar frameworks.
• Strong understanding of databases (PostgreSQL, MySQL, MongoDB, Firebase).
• Experience working with RESTful APIs, GraphQL, and authentication methods (OAuth, JWT).
• Knowledge of CI/CD pipelines and cloud services (AWS, Vercel, Netlify, Firebase).
• Strong problem-solving skills and ability to work independently.

Nice to Have:

• Experience with Next.js, Nuxt.js, or SvelteKit.
• Familiarity with WebSockets and real-time applications.
• Knowledge of containerization (Docker, Kubernetes).
• Understanding of DevOps practices and infrastructure as code.

🚀 If you're a Full-stack Engineer ready to build cutting-edge web applications, apply now!

Join Contra as a Framer Developer and play a key role in enhancing our networking platform. We’re looking for a skilled developer to create interactive user interfaces that elevate the user experience, all while contributing to our mission of empowering independent work.

Responsibilities

• Develop Interactive Components: Build and implement dynamic, interactive elements using Framer, ensuring seamless user experiences.
• Collaborate with Design: Partner with the design team to transform creative concepts into functional, interactive features.
• Optimize Performance: Write efficient, clean code that maximizes platform performance across a wide range of devices and browsers.
• Ensure Feasibility: Evaluate the technical feasibility of UI/UX designs, ensuring they are practical and executable within the platform's architecture.
• Maintain & Improve: Regularly update and enhance existing platform features, ensuring long-term functionality and scalability.

Contra is looking for an experienced Webflow Developer to help build and optimize our online presence. This role involves collaborating with the design team to create responsive, high-performing web experiences.

Responsibilities

• Develop & Design: Build responsive Webflow templates and layouts.
• Ensure Performance: Optimize site speed and scalability.
• Collaborate: Work with designers to create a cohesive visual experience.
• Troubleshoot & Improve: Identify and resolve Webflow-related issues.
• Document Work: Maintain clear development documentation.

The Job

As a DevOps Engineer, you'll be working with the engineering team to monitor and improve our security, infrastructure, and performance.

You'll be responsible for:

• Planning and performing infrastructure improvements and upgrades
• Triaging, replicating, and fixing potential security issues
• Performing and automating account support chores
• Maintaining high CI build success rates and low CI build run times
• Participating in the on-call rotation

Currently, our platform is built as a majestic Rails monolith, using Vue.js with Typescript on the front-end, and enhanced by Rust for select services and gems.

More details about our tech stack:

• Testing is done with RSpec & Capybara
• Continuous integration and deployment are done with CircleCI & GitHub Actions
• MySQL and PostgreSQL for our main databases
• ScyllaDB for our activity feeds
• Redis for session storage, queue management, and caching
• ElasticSearch for full-text search
• DevOps using Containers orchestrated with Kubernetes and Helm
• Service and performance monitoring is done with DataDog and Sentry
• Infrastructure managed with Terraform

About You

We're looking for someone who has proven experience maintaining large production-level Ruby on Rails applications.

Ideally, you have experience:

• Working with MySQL, PostgreSQL, and Redis
• Rails application development
• Maintaining infrastructure with Docker, Kubernetes, and Google Cloud

Additionally, since we're 100% remote, we:

• Highly value strong written communicators
• Require three hours overlap any time between 10 AM and 6 PM CET

About Us

FetLife is the largest kinky social network on this side of the Milky Way. We:

• Have over 10 million members and growing
• Grew 100% by word-of-mouth
• Serve over 3 billion requests a day

You can find our team and core values here.

Pay & Benefits

We use a standardised salary calculator for each position to ensure we are competitive, fair, and consistent. For this specific role, the rate is between $115k - $170k USD / year.

Additionally, we offer:

• Paid time off:
  • 2 weeks vacation
  • 5 statutory holidays (e.g. Easter & Thanksgiving)
  • 2 weeks during Christmas
  • 4-day workweeks during the summer months (July & August)
• Annual company retreat (e.g. Malaga, Miami, Vancouver, and Montreal)
• Annual anniversary gift (200$ USD for every year with us, e.g. 4th anniversary is $800)
• Monthly streaming music subscription reimbursement
• Fully paid maternity and paternity leave

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🤓 Vision insurance

🦷 Dental insurance

🚑 Medical insurance

🏖 Paid time off

📆 4 day workweek

🏔 Company retreats

🖥 Home office budget

⬜️ No whiteboard interview

👀 No monitoring system

🎅 We hire old (and young)

**

Fully Remote | Part Time | Equity Based

**Roles and Responsibilities:

The Backend Engineering Consultant will take requirements directly from the CTO, and independently design and develop robust, production grade solutions. This is an inidual contributor role. The Engineer will be focused exclusively on design and development, not mentorship, cross training or management. Primary responsibilities include:

**Develop Microservices using Python

Our primary language is Python, and our API framework is FastAPI. The Engineer will spend much of their time designing, developing and extending Python modules to power the core logic of our graph.

**Create and Deploy Containers using Docker and GH Actions

We take a container-first approach, leveraging Docker to encapsulate our products for deployment to cloud infrastructure. We use GitHub Actions for CI/CD to target infrastructure such as ECR. The Engineer will create Dockerfiles and GH workflow files to define the necessary environment for each application and deploy it.

**Create Infrastructure Across Cloud Providers using IaC

Our product is intended to be used across all major cloud providers, e.g. AWS, GCP, Azure. As such, we leverage Terraform to declaratively define services across providers. You will create Terraform scripts which are capable of creating and manipulating infrastructure with complex configurations, across providers.

**

**Education and Relevant Experience

M.S. or B.S. in a S.T.E.M. or quantitative field is highly preferred, however, it is not required. Relevant experience with proven contributions is the highest indicator of potential for success in our opinion. We’ll look for 10+ years in a range of job titles or roles that overlap with the Roles and Responsibilities section. A clean GitHub demonstrating related skills is most important. However, we understand that many professionals don’t have time to create or contribute to public facing repositories, so we encourage applications from Engineers without a robust portfolio.

**Deliverable, Cost and Quality Mindset

danzek.ai™ is a startup, as such, we must be extremely focused on balancing time, cost and quality. The Engineer will need to select libraries and services that are cheap, yet effective. The Engineer will also need to design solutions which are extensible and carefully selected regarding scope. Lastly, the Engineer will be expected to mitigate tech debt at all costs by focusing on best practices, modern patterns and careful implementation.

**Trust and Integrity

As a startup, our IP is extremely valuable. We expect the Engineer to keep our code and designs secret, treating them with the utmost care from an InfoSec perspective. We’re offering the Engineer equity, as such, they have a tangible interest in protecting their ownership.

**Flexibility

As a consultant, the Engineer may work on days and times that are most convenient for them, and performance will be based upon contributions, not hours worked. We also don’t measure performance in KPIs such as a SLOC, which are often decoupled from quality and tangible benefits.

Contra is looking for a skilled Frontend Engineer to build and enhance user-friendly, high-performance web applications. If you have experience with modern JavaScript frameworks, responsive design, and creating seamless user experiences, we’d love to hear from you!

Responsibilities:

• Develop and optimize scalable, responsive frontend applications.
• Collaborate with designers and backend developers to implement UI/UX designs.
• Write clean, maintainable, and well-documented code.
• Ensure cross-browser and mobile compatibility.
• Optimize performance for speed and scalability.
• Stay updated with the latest frontend technologies and best practices.

Requirements:

Proven experience as a Frontend Engineer with a strong portfolio.

• Proficiency in JavaScript, TypeScript, React, Vue, or Angular.
• Strong understanding of HTML, CSS, and modern styling frameworks (Tailwind, SCSS, Styled Components, etc.).
• Experience with RESTful APIs, GraphQL, and state management (Redux, Zustand, Vuex, etc.).
• Knowledge of build tools (Webpack, Vite, Babel) and performance optimization techniques.
• Understanding of UI/UX principles and accessibility best practices.
• Strong problem-solving skills and ability to work independently.

Nice to Have:

• Experience with Next.js, Nuxt.js, or SvelteKit.
• Familiarity with testing frameworks (Jest, Cypress, Testing Library).
• Knowledge of CI/CD pipelines and deployment (Vercel, Netlify, AWS).
• Basic backend experience (Node.js, Firebase, or similar).

🚀 If you’re passionate about building interactive web applications, apply now!

Contra is looking for a skilled Web Developer to build and maintain high-performance websites. If you have experience in front-end and/or back-end development, a passion for clean code, and the ability to create seamless user experiences, we’d love to hear from you!

Responsibilities:

• Develop, optimize, and maintain responsive websites and web applications.
• Collaborate with designers to bring UI/UX concepts to life.
• Write clean, scalable, and efficient code.
• Ensure cross-browser and mobile compatibility.
• Debug and troubleshoot issues to improve site performance.
• Stay updated with the latest web technologies and best practices.

Requirements:

• Proven experience as a Web Developer with a strong portfolio.
• Proficiency in HTML, CSS, JavaScript, and a modern framework (React, Vue, or Angular).
• Experience with back-end technologies (Node.js, Python, PHP, or similar).
• Knowledge of databases (SQL, Firebase, MongoDB, etc.).
• Understanding of SEO principles and website optimization.
• Ability to work independently and meet deadlines.

Nice to Have:

Experience with headless CMS, Webflow, or WordPress.

• Familiarity with API integrations and third-party services.
• Knowledge of cloud platforms (AWS, Vercel, Netlify).

🚀 If you're a Web Developer eager to build innovative digital experiences, **apply now!

Netlify is hiring a remote Staff Infrastructure Site Reliability Engineer (EMEA). This is a full-time position that can be done remotely anywhere in the United Kingdom, Spain or Poland.

Netlify - All-in-one platform for automating modern web projects.

📍 Remote | ⏳ Full-time | 🌍 Elys Network

Build the Future of DeFi on Cosmos

Elys Network is a high-performance Layer-1 blockchain built on Cosmos SDK, designed for universal liquidity and next-gen DeFi applications. Our flagship product, UniFi, is redefining decentralized trading with on-chain order execution, liquidity aggregation, and yield generation.

We’re looking for a senior-level blockchain engineer (5+ years experience) who thrives in a structured setting with a steady rhythm but is just as comfortable charting unknown territory, solving complex problems, and rolling up their sleeves when necessary.

We respect work-life balance, but when urgent situations arise (rare, but real), you’re the kind of person who steps up to ensure everything runs smoothly—even if it means working outside normal hours on occasion. The most innovative products are built by those who embrace both structure and the unknown, adapting with intention and vision.

🚨 Disclaimer: If you’re not deeply involved in DeFi and blockchain protocol development, please don’t apply. This role requires expert-level knowledge of Cosmos SDK, CosmWasm, and blockchain architecture.

Your Impact

⚡ Blockchain Protocol Development

• 5+ years of experience designing and optimizing high-performance blockchain infrastructure on Cosmos SDK.
• 3+ years developing and deploying CosmWasm smart contracts for DeFi applications.
• Architect and maintain on-chain order execution, staking, and liquidity aggregation mechanisms.
• Enhance cross-chain interoperability through IBC integrations and custom relayers.

🔗 Blockchain Security & Optimization

• 3+ years working with security-first blockchain practices, including gas efficiency optimization, mempool processing, and transaction finality.
• Monitor network health, validator performance, and chain upgrades to ensure stability.
• Implement MEV mitigation strategies, front-running protections, and advanced transaction handling.

🚀 Leadership & Adaptability

• 5+ years of leadership or senior engineering experience, guiding teams in blockchain development.
• Mentor and review the work of junior and mid-level blockchain engineers.
• Collaborate closely with front-end engineers, product teams, and ecosystem partners.
• Thrive in ambiguity—some days require methodical planning, others demand quick decision-making in uncharted territory.
• Be flexible when urgency demands it—it’s rare, but when the stakes are high, we show up.

🛠️ Must-Have Skills (Senior-Level Experience)

• 5+ years in blockchain development, with deep expertise in Cosmos SDK and Tendermint.
• 3+ years of smart contract development, specializing in CosmWasm and Rust.
• 3+ years working with staking modules, IBC transactions, and cross-chain communication.
• 5+ years of experience in DeFi mechanics, including AMMs, lending, staking, liquidity provisioning, and governance.
• 3+ years working on network security, cryptographic principles, and consensus mechanisms.
• Proven ability to scale blockchain networks and optimize transaction throughput.
• 3+ years of hands-on experience with Golang, WASM optimizations, and validator infrastructure.
• Contributions to open-source Cosmos SDK, Tendermint, or CosmWasm projects.
• Founder-style ownership mindset—you don’t wait for permission to solve problems.

📈 Bonus Points

• Experience with AI-powered smart contract security analysis and automation.
• Deep knowledge of MEV, front-running protection, and on-chain data indexing.

Why Join Elys?

• 🚀 Work on the cutting edge of DeFi—structured, yet always evolving.
• 🌎 Remote-first, flexible hours, global team of builders.
• 💰 Starting salary: $90K – $150K, open to discussion. Option for tokens as part of salary—let’s talk.
• 📈 Long-term career growth in Web3 & DeFi.
• ⚡ Balanced workflow—steady rhythm when possible, deep problem-solving when needed.

Ready to Build?

• 📌 Apply Now – Send your resume, GitHub, and portfolio to:
• 📧 Email: [email protected]
• 💬 Telegram: t.me/jstamp
• 🐦 X (Twitter): x.com/mitchell_mmxxi

Join Elys Network and help redefine DeFi trading, universal liquidity, and blockchain scalability on Cosmos! 🚀

📍 Remote | ⏳ Full-time | 🌍 Elys Network

Build the Future of DeFi on Cosmos

Elys Network is a high-performance Layer-1 blockchain built on Cosmos SDK, designed for universal liquidity and next-gen DeFi applications. Our flagship product, UniFi, is redefining decentralized trading with on-chain order execution, liquidity aggregation, and yield generation.

We’re looking for a versatile, energized front-end developer—someone who thrives in a structured setting with a steady rhythm but is just as comfortable charting unknown territory, solving complex problems, and rolling up their sleeves when necessary.

We respect work-life balance, but when urgent situations arise (rare, but real), you’re the kind of person who steps up to ensure everything runs smoothly—even if it means working outside normal hours on occasion. The most innovative products are built by those who embrace both structure and the unknown, adapting with intention and vision.

🚨 Disclaimer: If you’re not big on DeFi, please don’t apply. This role requires a deep understanding and passion for decentralized finance, liquidity mechanics, and blockchain interoperability.

Your Impact

🖥️ Front-End Development

• Build and optimize React/Next.js-based Web3 applications (UniFi, staking, governance).
• Implement CosmJS to interact with CosmWasm smart contracts and IBC transactions.
• Ensure performance, security, and responsiveness for real-time blockchain interactions.

🔗 Blockchain & DeFi Integration

• Develop wallet connection flows (Keplr, Ledger, Leap Wallet).
• Optimize Cosmos IBC asset transfers, relayers, and liquidity flows.
• Integrate on-chain price feeds, liquidity pools, and order book execution.

🚀 Leadership & Adaptability

• Own problems end-to-end, balancing structured workflows with the ability to e into the unknown when needed.
• Lead and mentor front-end engineers, ensuring code quality and best practices.
• Work closely with blockchain engineers, product leads, and designers to refine UX.
• Thrive in ambiguity—some days are methodical, others require deep problem-solving and quick pivots.
• Be flexible when urgency demands it—it’s rare, but when the stakes are high, we show up.

🛠️ Must-Have Skills

• 5+ years in React, Next.js, and TypeScript development.
• 3+ years of Web3 experience, focusing on Cosmos SDK or CosmWasm.
• Proficiency in CosmJS, contract queries, and wallet interactions.
• Strong understanding of DeFi mechanics: AMMs, staking, liquidity pools, order execution.
• Experience with Cosmos IBC, multi-chain interactions, and asset bridging.
• Security-first mindset for wallet connections and smart contract execution.
• Contributions to open-source Cosmos SDK or CosmWasm projects.
• Founder-style ownership mindset—you don’t wait for permission to solve problems.
• Ability to thrive in structure while being unafraid to break new ground when needed.

📈 Bonus Points

• Knowledge of Golang, Rust, or CosmWasm smart contracts.
• Experience building DeFi platform dashboards and analytics pages.
• Familiarity with AI-powered DeFi insights, automation, or predictive analytics.

Why Join Elys?

• 🚀 Work on the cutting edge of DeFi—structured, yet always evolving.
• 🌎 Remote-first, flexible hours, global team of builders.
• 💰 Starting salary: $75K – $120K, open to discussion. Option for tokens as part of salary—let’s talk.
• 📈 Long-term career growth in Web3 & DeFi.
• ⚡ Balanced workflow—steady rhythm when possible, deep problem-solving when needed.

Ready to Build?

• 📌 Apply Now – Send your resume, GitHub, and portfolio to:
• 📧 Email: [email protected]
• 💬 Telegram: t.me/jstamp
• 🐦 X (Twitter): x.com/mitchell_mmxxi

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Dropbox is hiring a remote PhD Machine Learning Intern (Summer 2025). This is an internship position that can be done remotely anywhere in the United States.

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Logos is a movement supporting the development of the decentralised web. Logos technologies lay the foundations for a freer internet upon which communities can evolve into network states. Each protocol in the Logos stack seeks to empower its users while upholding civil liberties and fundamental freedoms.

About Vac

public good protocols for the decentralized web.

This role is within the Vac Nescience unit, which develops Nescience A zkVM leveraging hiding properties.

The role

In this role, you will be responsible for conducting in-depth research and analysis of ZK argument systems.

The ideal candidate should be well-versed in zero-knowledge circuits written in Rust, with the ability to adapt to evolving research needs.

Your responsibilities will include designing zero-knowledge circuits, writing comprehensive specifications, and effectively communicating research findings through detailed write-ups.

Key responsibilities

• Research, analyze and design ZK argument systems and architectures for private computation.
• Write specifications and communicate research findings through write-ups.
• Analyze and give feedback for zero-knowledge circuits written in Rust.
• Break down complex problems, and know what can and what can’t be dealt with later.
• Perform security analysis, measure performance of and debug circuits.

You ideally will have

• Very strong academic or engineering background (PhD-level or equivalent in industry); relevant research experience.
• Deep understanding of Zero-Knowledge argument systems and related technologies (Nova, Plonk/Halo2, zk-STARK, zk-SNARK, circom), elliptic curve cryptography, and circuit design.
• Keen communicator, eager to share your work in a wide variety of contexts, like internal and public presentations, blog posts and academic papers.
• Experience in, and passion for, blockchain technology
• A strong alignment to our principles

Bonus points if

• Experience with low level / strongly typed languages (C++/Go/Rust)
• Experience with Open Source software

[Don’t worry if you don’t meet all of these criteria, we’d still love to hear from you anyway if you think you’d be a great fit for this role. Just explain to us why in your cover letter].

Hiring process

The hiring process for this role will be:

1. Interview with our POps team
2. Interview with team member from the Vac team
3. Pair programming task with the Vac team
4. Interview with Vac team lead

The steps may change along the way if we see it makes sense to adapt the interview stages, so please consider the above as a guideline.

Compensation

The expected compensation range for this role is negotiable, dependent on how we assess your skills and experience throughout our interview process. We are happy to pay in any mix of fiat/crypto.