Engineer III FBG in London

As a Software Engineer III at Fanatics Betting & Gaming (FBG), you will be the owner of backend systems that safeguard our customers and ensure a trusted, compliant, and frictionless betting experience. Your responsibilities will include designing, implementing, testing, and maintaining distributed systems that enable large-scale fraud detection and responsible gaming capabilities focused on customer identity, account management, and financial transactions across mobile and web platforms. This role blends deep backend technical expertise with architectural leadership.

You will contribute to the long-term technical vision for fraud prevention, identity verification, and responsible gaming enforcement - ensuring our systems are secure, reliable, and adaptive to evolving threats and regulations. You'll collaborate closely with Risk, Compliance, and Product partners to build a platform that balances safety, user trust, and operational efficiency.

At FBG, we're revolutionising sports betting with a customer-first approach that prioritises integrity, fairness, and innovation. As a key engineer in the CAT (Customer, Accounts & Transactions) domain, you'll help shape the foundation of trust and safety for millions of Fanatics customers. This is a fully remote role with offices located in Dublin.

• Own and evolve the backend architecture that powers fraud detection and responsible gaming features.
• Design and implement distributed systems in Java and Spring Boot, building scalable services and APIs for real-time risk evaluation, transaction monitoring, and behavioural analysis.
• Collaborate with Data Science, Risk, and Compliance teams to integrate fraud prevention models, transaction scoring engines, and responsible gaming rulesets into core backend flows.
• Architect event-driven systems leveraging technologies like Kafka to capture and analyse transactional and behavioural signals in real time.
• Lead large-scale technical initiatives, such as the modernisation of fraud detection services, identity platform evolution, or real-time customer protection pipelines.
• Establish backend and API best practices, emphasising security, observability, reliability, and compliance.
• Mentor and develop engineers, fostering a culture of technical excellence, accountability, and continuous learning.
• Partner with cross-functional teams — including frontend, mobile, product, and analytics — to ensure seamless and secure end-to-end user experiences.
• Champion responsible gaming and anti-fraud principles, helping define system patterns that promote fairness and regulatory alignment.
• Lead architectural reviews, incident postmortems, and design sessions, ensuring consistent improvement and knowledge sharing.
• Stay ahead of emerging fraud, identity, and responsible gaming technologies, and advocate for pragmatic adoption that strengthens our platform.
• Be open to occasional travel to Fanatics offices or industry events for planning, collaboration, and team development.

• 3+ years of professional software engineering experience, with deep expertise in Java and Spring Boot.
• Proven ability to design and evolve secure, high-scale, low-latency distributed systems.
• Strong understanding of authentication, authorisation, payment systems, or fraud prevention patterns.
• Experience designing APIs and backend systems that integrate with risk, compliance, or regulatory services.
• Skilled at balancing performance, scalability, and compliance in high-traffic systems.
• Demonstrated success driving technical alignment and architectural strategy across multiple teams.
• Strong communicator who can clearly articulate complex technical solutions to engineering, product, and leadership audiences.
• Passion for customer protection, data integrity, and operational excellence.
• Comfortable operating in a fast-paced, highly regulated environment with evolving priorities.

• Experience with AWS, Kubernetes, and observability tooling (Datadog, Grafana, CloudWatch).
• Familiarity with event-driven architectures, message streaming systems (Kafka), and real-time data pipelines.
• Exposure to machine learning integration for fraud detection or responsible gaming scoring.
• Experience building or modernising identity, payments, or compliance platforms.
• Proven ability to lead cross-functional initiatives focused on trust, security, or user protection.
• Enthusiasm for developer experience, clean API design, and maintainable, resilient systems.

Remote employee may also be eligible for a home office setup stipend. Ready to build the future of sports betting? 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.