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We are looking for a senior software engineer to help build and maintain our decentralized trading platform. The engineer will work across core product and backend systems including trading APIs, order flows, wallet/accounting logic, market data, risk controls, admin tools, and integrations with blockchain services. Experience with crypto, trading systems, or perpetual DEXs is preferred, but strong backend engineering fundamentals are the main requirement.

Key Responsibilities

• Build and maintain production services for trading, wallet, user, market data, and admin workflows.
• Work on APIs, database models, background workers, queues, Redis/Kafka integrations, and internal service communication.
• Contribute to trading-related flows such as order creation, position tracking, margin logic, funding data, liquidations, LP/yield features, and user portfolio data.
• Write clean, testable, maintainable code following existing patterns in the codebase.
• Debug production issues, investigate logs, reproduce bugs, and support incident fixes.
• Improve reliability through better validation, error handling, monitoring, and automated tests.
• Collaborate with frontend, product, DevOps, blockchain, and senior backend engineers.
• Participate in code reviews and help improve engineering quality without overcomplicating solutions.

Requirements

• 5 years building backend or distributed systems in production.
• Significant backend development experience in Go, TypeScript/Node.js, or similar languages.
• Backend development experience working specifically on centralized/decentralized exchanges.
• Good understanding of REST APIs, service architecture, SQL databases, Redis, queues, and background jobs.
• Basic understanding of Docker, Git, CI/CD, and production deployment workflows.
• Working knowledge of distributed systems, data consistency, and service-oriented architecture.
• Comfortable working with financial/accounting-style logic where correctness matters.
• Familiarity with Kafka (or similar), Redis, and caching patterns.
• Experience writing unit tests and debugging integration issues.
• Basic understanding of cryptographic principles and key management.
• Ability to read existing code, understand system flows, and make safe incremental changes.

Nice to have

• Experience with crypto, DeFi, exchanges, perpetuals, derivatives, or market-making systems.
• Understanding of concepts like leverage, margin, liquidation, funding rates, mark price, oracle price, order books, and PnL.
• Experience with Go services, NestJS, PostgreSQL, Redpanda, React, or Solidity.
• Familiarity with wallet authentication, blockchain event crawlers, smart contract interactions, or signature-based withdrawal flows.

Success Criteria

A strong senior engineer should be able to independently own well-scoped features, fix bugs safely, write reliable code, and understand how their changes affect trading, balances, user funds, and system stability. They should not need to design the whole platform, but they should be careful, curious, and able to grow into deeper ownership of trading and risk systems.

Offering

• Competitive base salary
• Generous token vesting
• Join a rapidly growing exchange at the forefront of zero knowledge innovation

Software Development Engineer in Test

United Kingdom - Remote

Full-time

Permanent employee

Your opportunity

Make a real difference in the blockchain industry! Build the change you want to see.

Veridian is building the infrastructure layer for digital identity. Born as a Cardano Foundation initiative, our technology already powers credential issuance and verification across regulated industries.

We are looking for an SDET to join a small, high impact team. You will shape quality from the ground up across everything we ship: the Veridian Wallet, enterprise credential management applications, cloud based backend services and open source protocol libraries. Our stack builds on the open protocols KERI and ACDC using components such as KERIA (Python), Signify-TS and Signify-Java.

You will wear multiple hats, in a highly complex domain. Some weeks that means writing test automation frameworks. Other weeks it means jumping into CI/CD pipelines, debugging a flaky mobile build, reviewing security sensitive code or helping define acceptance criteria for a feature that did not exist last month. In this role you will:

• Design and implement end to end, integration and API test automation frameworks.
• Build CI/CD quality gates that catch regressions before they merge.
• Obsess over edge cases: revoked keys, out of order events, race conditions.
• Test across Veridian’s full product stack: wallet, services, libraries.
• Collaborate with frontend and backend engineers to improve testability.
• Own test environments, test data management and reporting.

Your story

• 3+ years in an SDET or test automation role.
• Strong hands-on experience developing production grade automation frameworks in languages like TypeScript and Java.
• Familiar with mobile testing (Appium, Maestro or similar).
• Background in security sensitive systems (key management, cryptographic operations).
• Exposure to fault tolerant domains (out of order messaging, connectivity failures).
• Comfort with CI/CD pipelines (GitHub Actions preferred), containers (Docker) and lifecycle tooling (Git, Jira/Confluence).
• Self motivated, independent and thorough in finding what others miss.

Your impact

• Ensure the reliability and security of identity systems used by governments and enterprises.
• Build lean, automated pipelines that let a small team ship fast without compromising quality.
• Define quality standards that become the team’s standards.

Nice to have

• Fluency with AI tools to write tests more efficiently, generate edge cases and expand coverage.
• Industry experience in cryptography and key management.
• Familiarity with decentralized identity protocols and systems.
• Performance and load testing experience.
• Experience in a startup environment where speed, ownership and adaptability matter more than process.

About us

The Cardano Foundation is an independent, Swiss-based not-for-profit organization. The Foundation is tasked with advancing the public digital infrastructure Cardano and works to anchor it as a utility for financial and social systems, thus empowering the digital architects of the future.

The Foundation facilitates the worldwide advancement of Cardano in enterprise applications. It develops infrastructure tooling—including where there may not be an immediate commercial use case—plus strengthens operational resilience, and drives ersity of on-infrastructure use cases as well as the development of sound and representative governance.

Another significant part of the Cardano Foundation’s mission is to engage with and support the Cardano community. The Foundation assists the development of tools the community can use to leverage Cardano to solve problems in new ways.

• Embrace Flexibility & Freedom: Enjoy the benefits of remote work with the flexibility to tailor your hours that best supports your productivity, while staying aligned with the team.
• Collaborative Culture: We foster a collaborative remote environment where ideas flow freely and everyone feels empowered to contribute.
• Thrive in a Learning Culture: We believe in continuous growth and development. Every employee receives an annual learning budget to invest in their professional journey.
• Shape Your Career: We provide opportunities for growth and encourage you to continuously evolve your skills and expertise within a supportive environment.
• Make a Real Impact: Your work will directly contribute to the development and adoption of Cardano, shaping the future of blockchain technology and its real-world applications.
• Team Building & Fun: Connect with your colleagues and strengthen team bonds through a dedicated annual team building event, as well as a departmental team-building day. Enjoy an extra day off for your birthday and additional days off to celebrate milestone work anniversaries.
• Work with Passionate People: Surround yourself with a team of dedicated iniduals who are driven by a shared passion for blockchain technology and its potential to change the world.

Equal opportunities employer

The Cardano Foundation strives to provide a erse, inclusive and welcoming working environment. We are committed to being a discrimination free organization - including discrimination free space with regards to age, religion, race, nationality/ethnic origin, disability, sex, sexual orientation or gender identity.

Cardano Foundation does not accept any applications from recruitment agencies for this position. We refuse any responsibility for unsolicited applications as well as any associated fees. Unsolicited applications will be treated as direct applications regardless of the channel through which we receive them.

About Bluesky

Bluesky’s mission is to transition the social web from platforms to protocols. We’re building a federated social network where users have more power. Our team has decades of combined experience building distributed applications.

Role Overview

As a Senior Machine Learning Engineer at Bluesky, you will design, develop, and maintain machine learning systems for various parts of our stack. You will work on systems that directly impact the user’s experience on the network, whether through content recommendation, search, spam detection, or automated labeling. Your work will augment the team’s abilities to make the network a good place for all our users.

Key Responsibilities

• Design and implement machine learning models to improve personalized content recommendations, search, spam detection, topic labeling, and more.
• Work with the giant open dataset, the Bluesky social graph, and its content.
• Run machine learning tests and experiments, documenting findings and results for future iterations.
• Ensure algorithms deliver accurate user recommendations and optimized experiences.
• Train, retrain, and monitor machine learning systems to maintain model effectiveness.
• Operate and run machine learning systems at scale in production environments.

Required Qualifications

• 3+ years of recent experience in machine learning or data science roles, with a focus on recommendations and search.
• Proficiency in Python and experience with PyTorch and related modules.
• Willingness and a knack for rapid experimentation.
• Familiarity with data structures, data modeling, and software architecture.
• Experience with high-scale technologies.

Nice to Have

• Experience in recommendation systems, user behavior modeling, and social graph analysis.
• Familiar or proficient with Golang — our ML code interfaces with it heavily.
• Experience with Ray, BigQuery, and Postgres.
• Ability to extend and optimize existing machine learning libraries and frameworks.
• Strong communication skills and a collaborative mindset for working with cross-functional teams.

Compensation

The anticipated base salary range for this position is $221,000 – $405,000 USD, excluding equity. Equity will be considered in the total compensation package. Final base salary will be based on the inidual’s geographic location, as well as experience level, skill set, training, licenses, and certifications.

We’re a fully remote team, but an overlap of working hours with PST is required. Proximity and willingness to travel to Seattle is a plus. Health, dental, and vision insurance included.

Title: Guidewire Claims Center Developer

Location Plano,TX-8383 DominionPkwy / United States

Job category Business Processes

Work model Work from Home

00068710501

Job Description:

Technical Lead – Guidewire ClaimCenter (Java / Cloud)

United States (Remote)

About Cognizant

Cognizant is one of the world’s leading professional services companies, transforming clients’ business, operating and technology models for the digital era. Our unique industry-based, consultative approach helps clients envision, build and run more innovative and efficient businesses.

Role Overview

Cognizant is seeking an experienced Technical Lead / Senior Developer with strong expertise in Guidewire ClaimCenter, Java Spring/Spring Boot, and cloud platforms to support U.S.-based insurance clients. This is a full-time, remote position supporting distributed delivery teams across the United States.

Responsibilities

• Lead estimation, solution design, and technical planning for Guidewire ClaimCenter and digital implementations.

• Create detailed technical design and specification documents for Guidewire ClaimCenter, Spring Boot, APIs, web services, and digital solutions.

• Develop efficient, high-quality, and scalable code aligned with product and delivery standards.

• Conduct peer code reviews and testing reviews; log and track defects using approved tools.

• Support defect analysis and resolution in collaboration with senior specialists and QA teams.

• Define GUnit testing strategies and support QA during system and integration testing.

• Participate in deployment activities including deliverable reviews, deployment documentation, and mock testing.

• Develop reusable components and maintain knowledge transfer (KT) documentation for customers.

• Provide estimation inputs, impact analysis, and accurate reporting of time, effort, and status.

• Mentor junior team members and conduct Guidewire technical training sessions.

• Participate in technical interviews for Guidewire Technical Lead and Architect roles.

Qualifications

• 8–10 years of overall enterprise application development experience.

• 5–6 years of hands-on experience with Guidewire ClaimCenter.

• Mandatory active Guidewire ClaimCenter Certification (Associate level or higher).

• Strong experience with Java, Spring Framework, and Spring Boot.

• Hands-on experience with cloud platforms such as AWS or Azure.

• Solid understanding of REST APIs, web services, and integration patterns.

• Ability to work effectively in a remote, distributed U.S. delivery model.

Preferred Qualifications

• Experience with insurance digital portals and Guidewire Edge/API services.

• Additional Guidewire, AWS, or Azure certifications.

• Experience working in Agile/Scrum delivery environments.

Compensation

The annual base salary range for this role is $120,000 – $155,000 USD. This position is also eligible for Cognizant’s discretionary annual incentive program and a comprehensive benefits package. Compensation may vary based on geographic location, skills, experience, and internal equity.

Work Authorization

Applicants must be legally authorized to work in the United States without the need for current or future visa sponsorship.

Equal Opportunity Employer

Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic.

The Cognizant community:

• Cognizant is a global community with more than 300,000 associates around the world.
• We don’t just dream of a better way – we make it happen.
• We take care of our people, clients, company, communities and climate by doing what’s right.
• We foster an innovative environment where you can build the career path that’s right for you.

About us:

Title: Software Engineer IV

Location: Remote, United States

Job Description:

Company: Grainger Businesses

Work Location Type: Remote  

Req Number  330144

About Grainger

W.W. Grainger, Inc., is a leading broad line distributor with operations primarily in North America, Japan and the United Kingdom. At Grainger, We Keep the World Working® by serving more than 4.5 million customers worldwide with products and solutions delivered through innovative technology and deep customer relationships. Known for its commitment to service and award-winning culture, the Company had 2024 revenue of $17.2 billion across its two business models. In the High-Touch Solutions segment, Grainger offers approximately 2 million maintenance, repair and operating (MRO) products and services, including technical support and inventory management. In the Endless Assortment segment, Zoro.com offers customers access to more than 14 million products, and MonotaRO.com offers more than 24 million products.

Compensation

The anticipated base pay compensation range for this position is $134,100.00 – $223,500.00. This role is eligible for an incentive target of up to 15 % or $ , based on the achievement of inidual and company performance objectives in accordance with the current terms of the incentive program which are subject to change.

Rewards and Benefits

With benefits starting on day one, our programs provide choice and flexibility to meet team members' inidual needs, including:

• Medical, dental, vision, and life insurance plans with coverage starting on day one of employment and 6 free sessions each year with a licensed therapist to support your emotional wellbeing.
• 18 paid time off (PTO) days annually for full-time employees (accrual prorated based on employment start date) and 6 company holidays per year.
• 6% company contribution to a 401(k) Retirement Savings Plan each pay period, no employee contribution required.
• Employee discounts, tuition reimbursement, student loan refinancing and free access to financial counseling, education, and tools.
• Maternity support programs, nursing benefits, and up to 14 weeks paid leave for birth parents and up to 4 weeks paid leave for non-birth parents.

Grainger Benefits

The pay range provided above is not a guarantee of compensation.  The range reflects the potential base pay for this role at the time of this posting based on the job grade for this position. Inidual base pay compensation will depend, in part, on factors such as geographic work location and relevant experience and skills.   

The anticipated compensation range described above is subject to change and the compensation ultimately paid may be higher or lower than the range described above. 

Grainger reserves the right to amend, modify, or terminate its compensation and benefit programs in its sole discretion at any time, consistent with applicable law.

JOB SUMMARY

Join us as a Lead Software Engineer, Search Relevance, and help power high-impact search experiences at scale. You’ll design and build systems that blend classical IR with modern semantic and vector techniques to deliver highly relevant, customer-focused results.Partnering with product and engineering teams, you’ll translate business goals into measurable outcomes like improved relevance, conversion, and satisfaction—while leading technical direction, mentoring others, and driving data-informed decisions through experimentation.If you’re passionate about search and building systems that directly shape the customer experience, this role is for you.

JO****B FUNCTIONS 

Key Responsibilities

• Lead engineer on a team responsible for the application and delivery of high-quality, maintainable software for highly complex applications
• Influence team adoption of sensible defaults to enable continuous delivery activities
• Contribute to continuous learning on your team culture by leading knowledge sharing sessions with latest technological features and engineering practices
• Maintain software in production with demonstrated ability to triage and resolve issues
• Mentor developers, conduct code reviews, and participate in pair programming
• Partners directly with IT Management team to ensure successful design and delivery of technology based solutions
• Design, build, and improve search systems using lexical (e.g., BM25/TF-IDF) and semantic/vector-based retrieval approaches.
• Develop and optimize ranking strategies, including hybrid retrieval, reranking, and learning-to-rank techniques to improve relevance.
• Build and maintain indexing pipelines, including document processing, schema design, and data freshness.
• Evaluate search quality using offline metrics (e.g., NDCG, MRR, Precision/Recall) and online experiments (A/B testing).
• Analyze search performance, identify relevance issues, and implement improvements such as query understanding, intent handling, and fallback strategies.
• Tune precision/recall tradeoffs and implement query expansion techniques (e.g., synonyms, spell correction, query relaxation).
• Contribute to production search systems, including logging, monitoring, scalability, and reliability.
• Collaborate with cross-functional teams to define requirements, success metrics, and deliver continuous improvements.

JOB DESCRIPTION DISCLAIMER

This job description may not be inclusive of all assigned duties, responsibilities, or aspects of the job described, and may be amended at any time at the sole discretion of the Employer.

QUALIFICATIONS

• Bachelor's Degree or equivalent experience
• 5+ years experience as a Software Engineer; with experience in modern software engineering; designing; devloping, testing and deploying scalable software applications within a variety of technologies and environments.
• 3+ years hands on SOLR/Lucene search relevance work (BM25/TF IDF), schema/analyzers, query parsers, and SolrCloud operations
• 5+ years building and shipping hybrid lexical + vector search systems end to end (embeddings, ANN indexing, hybrid scoring, rollout, monitoring)
• Experience with pipeline/orchestration tools for embeddings & index refresh (e.g., Airflow/Spark), and integration of behavioral signals (click/carts) into relevance features or LTR
• Expert knowledge of programming skills
• Demonstrated knowledge of distributed system design and integration patterns
• Familiarity with Agile/Scrum methodologies and Dev Ops Practices
• Experience with analyzing, interpreting and communicating complex problems and practices

Knowledge, Skills and Abilities

• Expert knowledge of programming skills
• Demonstrated knowledge of distributed system design and integration patterns
• Familiarity with Agile/Scrum methodologies and Dev Ops Practices
• Experience with analyzing, interpreting and communicating complex problems and practices
• Understanding of IR fundamentals (BM25/TF-IDF, tokenization, analyzers, normalization, synonyms) and when lexical vs. semantic approaches are most effective; ability to design hybrid ranking strategies and relevance guardrails at scale.
• Proficiency in embeddings, ANN methods (e.g., HNSW), and hybrid search design, including tradeoffs between recall, latency, and ranking quality, as well as reranking and learning-to-rank approaches.
• Experience with search platforms (e.g., Solr/Lucene), including distributed architecture (sharding, replication), indexing, query routing, caching, and relevance tuning; solid programming skills in Java and Python.
• Expertise in relevance metrics (NDCG, MRR, Precision/Recall) and business KPIs; ability to design experiments, build dashboards, and make data-informed tradeoffs across precision, recall, and user impact.
• Ability to communicate complex IR/ML concepts to erse audiences, influence stakeholders with data, and operate effectively within modern engineering practices (Agile, CI/CD, code reviews, incident management).

We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex (including pregnancy), national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or expression, protected veteran status or any other protected characteristic under federal, state, or local law. We are proud to be an equal opportunity workplace.

We are committed to fostering an inclusive, accessible work environment that includes both providing reasonable accommodations to iniduals with disabilities during the application and hiring process as well as throughout the course of one’s employment, should you need a reasonable accommodation during the application and selection process, including, but not limited to use of our website, any part of the application, interview or hiring process, please advise us so that we can provide appropriate assistance.

Title: Central Control Officer

Location: New York United States

Full time

Job Description:

Business Risk & Control (BRC)

Business Risk & Control (BRC) supports the First Line of Defense (1LoD) Target Operating Model (TOM) and the firm's Non‑Financial Risk (NFR) framework. The team provides centralized risk and control guidance and quality assurance (QA) to promote consistent, sustainable, and well‑evidenced risk and control outcomes across supported businesses and corporate functions.

Role Summary: Central Control Officer

The Central Control Officer sits within a centralized 1LoD risk and control team in BRC and is responsible for providing risk control standards, guidance, and QA over key NFR programs and deliverables. The role partners closely with business lines and corporate functions to support adoption of the 1LoD TOM and NFR framework and provides Control Officer coverage for assigned corporate functions (e.g., Human Resources, Legal).

The Central Control Officer also supports embedded First Line Control Officers (FLCOs) through guidance, QA challenge, and coordination across core NFR deliverables, including RCSA, process mapping and control inventory, control testing and assurance alignment, risk events and issues, remediation tracking, and NFR/KRI reporting.

Key Responsibilities

Risk & Control Programs (1LoD)

• Lead and perform QA over core 1LoD/NFR programs and artifacts, including RCSA, process mapping and control inventory, control design and testing/assurance alignment, risk events and issues (including SIIs and risk acceptances), remediation tracking and evidence, and NFR/KRI reporting.

• Own the quality, completeness, and timeliness of assigned NFR deliverables, including documentation of QA conclusions and supporting evidence.

• Perform targeted risk and control assessments to evaluate the adequacy of policies, procedures, processes, systems, and controls, and provide actionable recommendations to strengthen the control environment.

Stakeholder Partnership & Coverage

• Partner with stakeholders across business lines and assigned corporate functions (e.g., HR, Legal) to balance NFR requirements with efficient operations, providing credible challenge and practical risk control guidance.

• Provide Control Officer coverage and advisory support for assigned corporate functions, including participation in key initiatives, change programs, and process changes to ensure appropriate risk assessment and control considerations are embedded.

• Coach and provide QA challenge to FLCOs and process/control owners on control execution, documentation quality, testing readiness, and remediation evidence.

Governance, QA & Continuous Improvement

• Execute risk program QA reviews to assess completeness, quality of rationale, risk‑to‑control linkages, and sufficiency of evidence; identify themes and drive continuous improvement.

• Report QA results, key themes, and emerging risks through NFR governance forums, influencing stakeholders on required enhancements to controls, documentation quality, and risk decisions, including escalation where appropriate.

• Develop, maintain, and socialize 1LoD risk control guidance (e.g., minimum standards, procedures, templates, and playbooks) to support consistent implementation of the NFR framework and 1LoD TOM.

Coordination & Regulatory Engagement

• Act as a liaison to Second and Third Line risk, compliance, and audit teams to facilitate effective challenge, coordinate responses to inquiries, and support adherence to NFR framework requirements.

• Support NFR‑related regulatory examinations, compliance reviews, and internal audits as a 1LoD subject matter expert, including coordination of evidence and demonstration of program design, execution, and QA outcomes.

Reporting & Insights

• Produce and maintain NFR management information, including dashboards and reporting on NFR profile, KRI trends, issue and remediation status, and QA outcomes to support management decision‑making and prioritization.

• Analyze business, regulatory, and operating environment changes to assess impacts to NFR risks and controls and coordinate updates to risk assessments, controls, and documentation as needed.

• Deliver communications and training to promote awareness and consistent adoption of NFR policies, standards, program expectations, and control best practices

Qualifications & Experience

• 7+ years of experience in 1LoD risk and control, non‑financial or operational risk, risk program execution, QA/testing, or a related control assurance role within financial services.

• Demonstrated experience executing and/or quality assuring core NFR programs, such as RCSA, issue management, control testing and assurance, and process/control inventory.

• Strong ability to provide credible challenge, raise and escalate issues appropriately, and operate independently with sound judgment.

• Proven capability to develop high‑quality analysis, thematic insights, and actionable management information for NFR governance and decision‑making.

• Strong interpersonal, analytical, and critical thinking skills, with the ability to articulate complex concepts clearly and concisely.

• Highly professional, adaptable, proactive, and objective, with the ability to collaborate effectively across teams while maintaining independence.

• Bachelor's degree required; Master's degree preferred.

• Prior experience as a Control Officer, FLCO, or in Internal Audit is preferred.

The expected base salary ranges from $104,000.00. - $190,000.00. Salary offers are based on a wide range of factors including relevant skills, training, experience, education, and, where applicable, certifications and licenses obtained. Market and organizational factors are also considered. In addition to salary and a generous employee benefits package, successful candidates are eligible to receive a discretionary bonus.

#LI - Hybrid

#LI-NR1

Other requirements

Mizuho has in place a hybrid working program, with varying opportunities for remote work depending on the nature of the role, needs of your department, as well as local laws and regulatory obligations. Roles in some of our departments have greater in-office requirements that will be communicated to you as part of the recruitment process.