Senior Platform Engineer, Fanatics Markets - UK at Fanaticsfbg

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

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