Senior Fullstack Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Fullstack Engineer based in United Kingdom. As a Senior Fullstack Engineer, you will help build and evolve the technology powering critical financial and billing operations. You will work across the full stack, with a strong focus on developing modern, reliable front-end applications using React and TypeScript. You will also contribute to back-end services and APIs built with Ruby on Rails, using GraphQL to connect applications and systems. Working closely with Product and engineering colleagues, you will help translate business needs into scalable technical solutions. This role offers opportunities to take ownership of technical initiatives, improve development practices, and influence the evolution of the codebase. You will also contribute to team growth through collaboration, knowledge sharing, and mentoring.