Full Stack Engineer (Contract) - Javascript + Python (Cloud GCP) London (Hybrid - 2 days onsite) 12-month contract | Immediate start | Likely extension We''re looking for an experienced Full Stack Engineer to join a high-performing product engineering team building user-facing, AI-powered applications. This is a hands-on role focused on designing and delivering robust, scalable software rather than pure ML or data engineering. You''ll work on end-to-end features within an agentic application environment, contributing to real-world, production-grade systems that are already live and evolving.What you''ll be doingDesigning and building end-to-end user-facing featuresWorking across Front End and Back End within a modern cloud-based architectureImproving reliability, scalability, and performance of existing applicationsContributing to technical design and architectural decisionsCollaborating closely with product, engineering, and research stakeholdersBuilding features such as recommendations, user profiles, and other customer-facing functionalityThis is a software engineering role, not a data engineering or ML research position. Tech stack andamp; skills EssentialStrong experience with JavaScript and PythonSolid cloud experience (GCP preferred; Azure acceptable)Full stack development experience across Front End and Back EndComfort working in containerised environments Nice to haveKubernetesCloud deployment and CI/CD exposureReact or Next.jsExperience contributing to system and ap