Staff Software Engineer

The Staff Software Engineer will play a pivotal role in evolving Marks & Spencer's Experimentation platform, empowering product, engineering, and content teams to run experiments more easily and confidently. This position involves designing and building backend-heavy platform capabilities, setting technical direction, and championing a self-service model to reduce toil. The role requires mentoring engineers, demonstrating a production-first mindset, and producing high-quality documentation for APIs and systems.