About the job

The Senior Software Engineer (PHP & Symfony) role at Cancer Research UK is a full-time permanent position based in Stratford, London, with hybrid flexibility (1–2 days in the office). Offering a salary of £54,000–£64,000 plus benefits, the role focuses on back-end development of the organisation’s Online Fundraising Web Application, built on PHP Symfony, which powers millions of donations and fundraising pages. The engineer will deliver high-quality, scalable solutions using Agile principles, collaborate with cross-functional teams including Product Managers, UX Designers, and Architects, and help shape technical standards while mentoring junior engineers. The position requires strong PHP/Symfony experience (or similar frameworks like Laravel/Drupal), knowledge of REST APIs, large-scale repositories, and some JavaScript/TypeScript exposure. The role offers visa sponsorship, exposure to a modern tech stack, and the opportunity to contribute to Cancer Research UK’s mission of beating cancer by raising hundreds of millions of pounds for life-saving research.