At a Glance
- Tasks: Lead the development of high-performance backend services for a cutting-edge trading platform.
- Company: Join Fanatics, a global leader in digital sports and fan engagement.
- Benefits: Competitive salary, remote work options, and home office setup stipend.
- Other info: Dynamic, fast-paced environment with opportunities for growth and influence.
- Why this job: Be part of a pioneering team redefining prediction markets with innovative technology.
- Qualifications: 4+ years in backend development; experience with Java and Go preferred.
The predicted salary is between 70000 - 90000 £ per year.
About Us
Fanatics is building a leading global digital sports platform.
We ignite the passions of global sports fans and maximize the presence and reach for our hundreds of sports partners globally by offering products and services across Fanatics Commerce, Fanatics Collectibles, and Fanatics Betting & Gaming, allowing sports fans to Buy, Collect, and Bet.
Through the Fanatics platform, sports fans can buy licensed fan gear, jerseys, lifestyle and streetwear products, headwear, and hardgoods; collect physical and digital trading cards, sports memorabilia, and other digital assets; and bet as the company builds its Sportsbook and i Gaming platform.
Fanatics has an established database of over 100 million global sports fans; a global partner network with approximately 900 sports properties, including major national and international professional sports leagues, players associations, teams, colleges, college conferences and retail partners, 2,500 athletes and celebrities, and 200 exclusive athletes; and over 2,000 retail locations, including its Lids retail stores.
Our more than 22,000 employees are committed to relentlessly enhancing the fan experience and delighting sports fans globally.
Fanatics Markets
Fanatics Markets is the real-money prediction and trading app where you can invest in moments you care about.
Built on a secure platform, we let users predict real-world outcomes and trade on events they actually follow, from sports and entertainment to political elections and beyond.
Our mission is to redefine how fans engage with the moments and markets that matter most.
We’re looking for the right people to help us build the future of prediction markets.
Overview
This Senior Software Engineer (Backend) role is a senior-level IC with significant ownership over the core trading platform underpinning all FMX operations.
You will join a greenfield team building new services in Go, working alongside engineers with deep backgrounds in regulated financial infrastructure.
You will lead by example, establishing best practices for AI-assisted development while building systems that must meet the reliability, latency, and auditability standards of a regulated product.
We're pioneering the use of AI as a code collaborator.
We need engineers who have gone beyond experimentation and who actively use Claude Code, Cursor, Codex, Git Hub Copilot, or similar tools to ship production code faster while maintaining exceptional quality standards.
Responsibilities
- Lead the design, development, testing, and deployment of high-performance, fault-tolerant backend services supporting the FMX trading platform.
- Own services and features end-to-end: spec writing → implementation → instrumentation → deployment → monitoring → iteration based on metrics.
- Work within and help modernise a Java codebase while contributing to new service development in Go, Java and Kotlin.
- Contribute to the architecture for order processing, market data distribution, and trade lifecycle management on a regulated product.
- Build and maintain reliable daily reporting pipelines, ensuring data integrity and full audit trails across all trading activity.
- Participate in 24/7 on-call rotations; contribute to SLO definition, alerting strategy, and incident response for mission-critical trading infrastructure.
- Model and manage data for contracts, orders, positions, and settlements with an emphasis on correctness, integrity, and regulatory auditability.
- Collaborate with the Dev Ops/Platform team to ensure services are observable, scalable, and compliant with MNPI and insider trading restrictions.
- Conduct thorough code reviews, raising the bar on code quality, readability, security, and maintainability.
- Leverage AI tools to accelerate development velocity while maintaining high standards for security, correctness, and regulatory compliance.
- 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
- 4+ years of experience building highly scalable, high-performance backend applications or distributed systems.
- Background in regulated exchange or financial infrastructure strongly preferred – brokerage, futures/derivatives exchanges (CBOE, CME, ICE), or similar CFTC/SEC-regulated environments.
- Production experience with Java; Go experience or a strong demonstrated desire to work in Go.
- Experience with event-driven architectures (Kafka, Kinesis, Pub Sub, or similar) in a financial or high-throughput context.
- Strong understanding of data integrity and transaction management in Postgre SQL or equivalent RDBMS, including financial-grade data modelling.
- Solid grasp of software design principles (SOLID, DRY) and testing methodologies (unit, integration, end-to-end).
- Familiarity with CFTC compliance requirements, MNPI handling, and audit trail obligations in a regulated trading environment.
- Experience with CI/CD pipelines, automated testing, and safe deployment practices for backend services.
- Production reliability experience: monitoring, logging, alerting, on-call, and SLO
- definition.
- Demonstrated experience using AI tools (Claude Code, Cursor, Copilot, etc.) to ship production code; able to articulate specific workflow improvements.
- Communicates complex technical concepts clearly to engineering, compliance, and business stakeholders.
- Thrives in a fast-paced, high-growth environment where priorities evolve and decisions are made quickly.
Preferred Qualifications
- Previous experience at a US-regulated financial exchange or licensed trading platform (e. g. CBOE, CME, or similar).
- Familiarity with low-latency trading systems, order book design, or market data infrastructure.
- Previous experience in a 0→1 or high-growth startup environment.
- Contributions to open-source projects or the technical community.
- 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 connections 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.
Ready to build the future of regulated prediction markets?
If you possess some of these skills but not all of them, we still encourage you to apply!
Please note that visa sponsorship is not available for this position.
We are open to fully remote candidates based in the United Kingdom.
Remote employees may also be eligible for a home office setup stipend.
By submitting your application, you agree to our terms of service and acknowledge you have read our
Candidate Privacy Policy.
Senior Software Engineer - Exchange in London employer: Fanatics Betting & Gaming
At Fanatics Betting & Gaming, we pride ourselves on fostering a dynamic and innovative work culture that empowers our employees to thrive. Located in the UK, we offer competitive benefits, a collaborative environment, and ample opportunities for professional growth, particularly in the exciting field of AI-driven technology. Join us to be part of a forward-thinking team where your contributions will make a meaningful impact.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer - Exchange in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Fanatics Betting & Gaming or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Fanatics Betting & Gaming.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Fanatics Betting & Gaming.
✨Explore Job Boards Specifically for Tech Roles
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We think you need these skills to ace Senior Software Engineer - Exchange in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Fanatics Betting & Gaming.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Fanatics Betting & Gaming and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Fanatics Betting & Gaming
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Fanatics Betting & Gaming uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
