JJobsSonar

Senior Full Stack Developer TypeScript React API

Client Server · London, England, United Kingdom

Full Stack EngineeringOn-site

About this role

As a Senior/Founding Full Stack Developer, you will join a fast-growing sports technology business establishing its UK operation. You will have founding engineer ownership, shaping architecture and making technology decisions while building products from the ground up. The role is hands-on and requires owning the full software development lifecycle from design to deployment. You will work in a small team environment focusing on sports, data, digital insights, and betting technology. The technical environment involves TypeScript, React, backend services, and APIs, with an interest in Rust.

Skills & technologies

Must have

Nice to have

  • Rust
  • Direct-to-consumer subscription experience
  • Real-time systems
  • In-play chat
  • Live sports data
  • Betting related technology

Read full description

Senior Full Stack Engineer / Developer (TypeScript React API Rust) London onsite to £120k


Opportunity for a Senior / Founding Full Stack Developer to join a fast growing sports technology business as it establishes its new UK operation.


The company sits at the intersection of sports, data, digital insights and betting, working across major US sports including the NFL, NBA, baseball and hockey, with further expansion into college football underway.


As a Senior Full Stack Developer, you'll be one of the first engineers in the UK and will have genuine founding engineer ownership - shaping architecture, making technology decisions and building products from the ground up.


This is a hands-on role for someone who thrives in a start-up environment and is comfortable owning the full software development lifecycle, from design and development through to testing, deployment and production.


Location:

You'll join a small team in an attractive area of London on a fulltime basis (Monday to Friday).


About you:

  • You have strong full stack software engineering skills: including TypeScript, React, backend services and APIs - ideally you'll also have some knowledge of Rust
  • You have experience shipping consumer facing products, ideally direct-to-consumer subscription experience
  • You're comfortable owning features end to end, from design through release and data reporting, in a small team environment
  • You've used AI tooling to accelerate development and can make recommendations to the team on effective ways to use AI in development
  • You're collaborative with strong problem solving skills
  • You have experience of working in start-ups / scaling companies
  • Experience building real-time systems, in-play chat, live sports data or betting related technology would be particularly relevant


What's in it for you:

  • Salary to £120k
  • Bonus
  • Impactful with excellent career growth as the company scales


Apply now to find out more about this Senior Full Stack Developer / Engineer (TypeScript React API) role.

£120,000 / yearApply now

Similar Full Stack Engineering jobs

All Full Stack Engineering jobs

Full Stack Developer

SS&C Technologies · Indiana, United States

Full Stack EngineeringSep 16, 2026

Full Stack Engineer

RemoteHunter · United States

Full Stack Engineering$120,000.00/yr - $155,000.00/yrSep 16, 2026