Senior Fullstack Engineer — Remote AI Platform

Fanatics; United Kingdom; Remote; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Home office setup stipend

Job summary

Fanatics is building a leading global digital sports platform with a strong focus on scalable, high-quality experiences. This Senior Software Engineer role spans front-end in React/Next.js with TypeScript and back-end in Go, modeling data for markets, orders, and transactions.

You’ll help shape the product, technical foundations, and ways of working from scratch, leading by example and applying best practices for AI-assisted development.

Qualifications

• Experience with React architecture and component-driven development.
• Strong understanding of performance, accessibility, and web standards on the front end; scalability and observability on the backend.
• Experience integrating with backend APIs and collaborating with cross-functional platform/infra teams.
• Experience with CI/CD pipelines, testing strategies, and safe deployment practices for web apps.
• Proven ability to ship production code using AI tools (Claude Code, Codex, Copilot, etc.).

Responsibilities

• Lead design, development, testing, and deployment of scalable front-end and backend features.
• Drive evolution of the Markets platform in collaboration with product and design.
• Design and implement experimentation capabilities (feature flags, A/B tests).
• Integrate with backend APIs and collaborate with platform teams for reliable systems.
• Conduct thorough code reviews to improve quality and maintainability.
• Leverage AI tools to accelerate development while upholding security and performance.
• Establish and document team standards for AI usage and review processes.
• Contribute to an early-stage product, helping define processes as they evolve.

Skills

React

Next.js

TypeScript

Go

PostgreSQL

Kafka

CI/CD

Testing

AI tools usage

Communication

Cross-functional collaboration

Education

BSc in Computer Science

Tools

PostgreSQL

Kafka/PubSub

Claude Code

Codex

GitHub Copilot

Job description

Fanatics is building a leading global digital sports platform with a strong focus on scalable, high-quality experiences. This Senior Software Engineer role spans front-end in React/Next.js with TypeScript and back-end in Go, modeling data for markets, orders, and transactions.

You’ll help shape the product, technical foundations, and ways of working from scratch, leading by example and applying best practices for AI-assisted development.