Senior Platform Engineer, Fanatics Markets - UK

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 iGaming 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. About the Team 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. Role Overview As a Senior Platform Engineer, you will be a key driver of our core infrastructure and developer experience. You will design and implement durable platform abstractions and partner with engineering leads to ensure our systems enable rapid innovation without compromising stability or security. This role requires a balance of deep hands-on engineering and systems thinking. You will own complex features from ideation to production, championing best-in-class platform standards and mentoring mid-level engineers while remaining deeply embedded in the codebase. On the engineering side, we are pioneering the use of AI as a code collaborator. We need engineers who have moved beyond experimentation—who actively use tools like Claude Code, Cursor, or GitHub Copilot to ship production code faster while maintaining exceptional quality. Responsibilities Implement team-level standards for AI-augmented development, utilizing prompt engineering and validation frameworks to increase velocity without sacrificing code quality. Identify and mitigate AI-generated code pitfalls, such as security vulnerabilities or over-abstraction, and assist in tracking team productivity metrics. Design, build, and maintain highly available cloud-native infrastructure, ensuring the platform scales reliably with our growing user base. Build and optimize CI/CD pipelines and developer tooling to eliminate friction in the software delivery lifecycle. Implement and maintain platform security safeguards and compliance standards to protect the integrity of the firm’s systems. Contribute to the system observability roadmap by implementing monitoring, tracing, and alerting to ensure high operational reliability. Partner with product and engineering teams to translate technical requirements into scalable platform solutions. Mentor junior and mid-level engineers, lead incident response for team-owned services, and advocate for modern engineering best practices. Experience and Skills 5 plus years of experience in platform engineering, DevOps, or backend engineering, with a track record of building scalable, cloud-native environments (AWS/Kubernetes). Strong proficiency in using AI collaborators (Claude Code, Cursor, Copilot) to ship production code and an ability to optimize personal development workflows. Abili…