Senior Blockchain Engineer - Backend
No salary listed
Senior
Remote in UK
Remote
Software EngineeringBackend Engineering
About the job
Requirements
- More than 4 years of experience building highly scalable, high-performance backend applications or distributed systems
- Hands-on experience building blockchain decentralized applications or services integrating with Ethereum Virtual Machine 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 Pub/Sub
- 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
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
- Own services and features end-to-end: spec writing → implementation → instrumentation → deployment → monitoring → iteration based on metrics
- 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
- 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
Desired 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
- Visa sponsorship is not available for this position.
- Fully remote candidates based in the United Kingdom are eligible for remote work and home office stipend
About the company
Fanatics China is a joint venture between Fanatics Inc. and Hillhouse Capital that localizes and scales licensed sports merchandise for China. It designs, manufactures, and markets fan gear for Chinese consumers, operating a multi-channel model that includes building and running e-commerce sites for global leagues and teams, exploring online marketplaces, and developing physical retail concepts. Its product workflow combines technology, data, and on-demand manufacturing to manage the entire supply chain, enabling fast response to demand. The company differentiates itself through a China-focused approach backed by Hillhouse’s network and investments, its end-to-end vertical commerce model, and partnerships with hundreds of sports organizations, which together help it navigate China’s complex retail landscape. The goal is to satisfy a previously underserved Chinese market for licensed sports merchandise by creating localized products and channels that connect fans with official gear.
Company Size
10,001+
Company Stage
Growth Equity (Venture Capital)
Total Funding
$5.2B
Headquarters
Huangpu, China
Founded
1995
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Simplify's Take
What believers are saying
- Fanatics Sports & Casino launched September 2, 2026, broadening monetization beyond merchandise.
- Fanatics Collectibles opened Paris flagship plans after London's success, expanding global premium retail.
- NFL added Fanatics as official betting operator, validating the company's sportsbook ambitions.
What critics are saying
- Three antitrust suits were dismissed September 30, 2026, but Panini's case still threatens.
- Fanatics laid off 286 Florida workers for Riverview closure effective March 1, 2026.
- Sportsbook and prediction-markets integration intensifies rivalry with DraftKings, FanDuel, and regulators.
What makes Fanatics unique
- Fanatics controls leagues, teams, and factories through vertical commerce, not simple retail markup.
- Fanatics signed long-term NFL, UEFA, FIFA, and Ryder Cup rights in 2026.
- Fanatics China pairs Hillhouse Capital with local manufacturing and Shanghai operations.
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Benefits
- Work Life Balance - At Fanatics we place our focus on results and empowerment and encourage you to enjoy your time on and OFF the field with our competitive time off policies.
- Recognition and Rewards Program - Fanatics values our internal fans too! Our programs are designed to thank and reward Fanatics athletes for their hard work and commitment to winning as a team.
- Company Sponsored Events - From breakfast to happy hour and every hour in between – Fanatics employees can enjoy time together at one of our many company events.
- Fanatics.com Employee Discount - As an employee you will receive a special discount on all of your favorite sports merchandise and memorabilia.
- Give Back - Fanatics cares about the fans around us. We encourage you to partner up with your teammates in giving back and serving the communities where we work and play.
- Meet & Greets - You never know who will show up to the office. You might just meet one of your all-time favorite athletes.
- Invest in You - Here at Fanatics we want you to accomplish your goals. We offer tuition reimbursement.
- Healthy Lifestyle - Fanatics cares about helping and supporting our teams in their busy lifestyles. Through wellness relationships with fitness and weight management partners we are here to support you in whatever your lifestyle goals.
- Wellness Coverage - Your health is important to you – and it’s important to us too! We offer a number of benefit plan options for convenience and flexibility.
- Financial Security - Through our plans, Fanatics offers you a way to budget for health care expenses that you’d typically pay for out of pocket.
- Retirement - The sooner you begin planning for your retirement, the better. Fanatics offers generous plans to help you prepare for the future.
- Network of Support - Fanatics understands that sometimes you may need someone in your corner. Through the Life Assistance Program, you and your family have access to support 24 hours a day, 7 days a week.