Senior Software Engineer - AI-Driven, Remote UK

Fanaticsfbg; Greater London; Remote; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Home office setup stipend

Remote-friendly

Job summary

Fanatics is seeking a Senior Software Engineer in the United Kingdom (UK). This IC role offers significant ownership across full-stack development—frontend in React/TypeScript and backend in Go/Python—while enabling deep collaboration with product, design, and platform teams.

You will champion AI-assisted development, code quality, and scalable systems in a fast-growing environment. We welcome strong engineers with 6+ years of experience, a track record across modern web stacks, and the ability

Qualifications

• 6+ years in senior/staff roles building scalable production systems.
• Strong React architecture, component-driven development and modern state management.
• Deep knowledge of JavaScript/TypeScript or a backend language; ability to influence standards.
• Understanding of performance, reliability, accessibility, and web standards.
• Experience integrating with backend APIs and cross-functional teams; CI/CD & testing.
• Proven track record using AI tools (e.g., Claude Code, Copilot) in production code.

Responsibilities

• Lead design, development, testing and deployment of scalable web and backend features in React/Go.
• Drive evolution of the Markets platform with product and design partners.
• Own features end-to-end from spec to monitoring and iteration.
• Design and implement experimentation capabilities (feature flags, A/B tests).
• Integrate with backend APIs and collaborate with platform/infra teams.
• Conduct thorough code reviews and raise code quality standards.
• Promote responsible AI usage and establish team AI usage guidelines.
• Contribute to an early-stage product environment and unblock others.

Skills

Senior/Staff level

React/TypeScript

Go

Python

Java

Distributed systems

AI tools usage

Code review

Education

BSc in Computer Science or related field

Tools

Next.js

TanStack Query

Tailwind

Zustand

Kafka/PubSub

Postgres

Job description

Fanatics is seeking a Senior Software Engineer in the United Kingdom (UK). This IC role offers significant ownership across full-stack development—frontend in React/TypeScript and backend in Go/Python—while enabling deep collaboration with product, design, and platform teams.

You will champion AI-assisted development, code quality, and scalable systems in a fast-growing environment. We welcome strong engineers with 6+ years of experience, a track record across modern web stacks, and the ability