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# Software Engineer III - Backend, Fanatics Markets

- **Company:** Fanatics Inc.
- **Location:** Leeds, UK (Remote available)
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** A/B Testing, Artificial Intelligence, Automation of Tests, Software Quality, Code Review, Cursor (Graphical User Interface Elements), Programming Tools, Distributed Systems, Event Logging, PostgreSQL, Open Source Technology, Query Optimization, E2e Testing, Software Tools, Blockchain, Systems Integration, Strategies of Testing, Data Logging, GitHub Copilot, Database Optimization, Indexer, Backend, Event Driven Architecture, Solid Principles, Deployment Automation, Production Code, Apache Kafka
- **Published:** September 9, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/software-engineer-iii-backend-fanatics-markets/46477344

## About the Role

Conduct thorough code reviews, raising the bar on code quality, readability, and maintainability Leverage AI tools to accelerate development velocity while maintaining high standards for security, correctness, and performance Establish and document team standards for AI usage (prompt patterns, code review checklists, validation strategies) Contribute to a fast-paced 0*1 environment, unblocking others and taking initiative where processes are still being defined Qualifications More than 4 years of experience building highly scalable, high-performance backend applications or distributed systems Hands-on experience building blockchain dApps or services integrating with EVM or Solana (hackathons, side projects, or production work all count) Experience querying and integrating blockchain data (e.g., event logs, indexing, reconciliation between on-chain and off-chain state) Experience with PostgreSQL - complex query optimization, indexing strategies, and schema/migration management Experience
with event driven architecture like Kafka or PubSub Strong grasp of software design principles (e.g., SOLID, DRY) and testing methodologies (unit, integration, and end-to-end testing) Experience designing and integrating backend APIs and collaborating with cross-functional platform and product teams Familiarity with CI/CD pipelines, automated testing, and safe deployment strategies for backend services Experience working with production reliability practices (monitoring, logging, alerting, and basic SLO concepts) Demonstrated experience using AI tools (Claude Code, Cursor, Copilot, etc.) to ship production code Can demonstrate specific examples of workflow improvements from AI-assisted development (e.g., "reduced boilerplate generation time by 40%") Effectively communicates complex technical concepts clearly to diverse audiences, including engineers and stakeholders Thrives in a high-growth environment where priorities evolve regularly and decisions are made quickly Strong ability to
collaborate cross-functionally across diverse teams within large enterprise environments, while operating with a startup mindset Preferred Qualifications Experience using Go in production environments Previous experience in 0*1 or high-growth startup environments Contributions to open-source projects or technical community Experience with real-money transaction systems and regulatory compliance Background in building developer tools or improving engineering productivity Experience leading without authority and influencing technical direction across teams Depending on the role, your interview and onboarding experience may include in-person components, such as onsite interviews or Launching into Better: LIVE-a multi-day cultural immersion in New York City for full-time, non-seasonal hires. These sessions are designed to build connection and bring our culture to life, though specific travel and participation requirements will be confirmed based on your role and location. Your
recruiter will provide clear guidance at each stage of the process. Please note that visa sponsorship is not available for this position. We are open to fully remote candidates based in the United Kingdom. Remote employee may also be eligible for a home office setup stipend. #J-18808-Ljbffr

## Description

AI as a code collaborator. We need engineers who have gone beyond experimentation-who actively use Claude Code, Cursor, Codex, GitHub Copilot, or similar tools to ship production code faster while maintaining exceptional quality standards. Responsibilities Lead the design, development, testing, and deployment of scalable, high-quality backend services in Go Drive the technical evolution of our markets and trading backend, partnering with product and other engineering teams to deliver robust, observable, and maintainable systems Design and implement experimentation capabilities (feature flags, A/B tests) to validate ideas quickly and safely Model and manage data for markets, orders, and transactions with a focus on correctness, integrity, and auditability Integrate on-chain and off-chain data sources, building reliable pipelines for blockchain event ingestion and querying Collaborate on reliability practices including on-call participation, SLO definition, alerting, and incident response


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