Senior Full Stack Engineer / Developer (TypeScript Elixir AWS) London / Hybrid Up to £100k Equity Join a fast-growing energy trading data scale-up as a Senior Full Stack Engineer, working on complex greenfield systems that demand scalability, reliability and clean architecture. You'll own projects end-to-end, solve challenging technical problems and work with a modern tech stack including TypeScript, Elixir, Elm and AWS. What you'll do: Lead full stack development across greenfield products Design, build and ship scalable, data-driven systems Work 50/50 across backend and frontend in a modern, polyglot environment Mentor team members and help shape engineering best practices Tech Stack: TypeScript, Elixir, Elm, Ember, Python, Phoenix, LiveView, PostgreSQL, AWS, Docker (Experience with all not required.) About you: Strong Computer Science fundamentals (STEM degree, 2:1) Proven experience delivering complex software in modern stacks Excellent problem-solving skills and ability to own projects Strong TypeScript a backend language (Python / Java / C++ / C#) Startup/scale-up experience; financial markets knowledge a plus What's in it for you: Competitive salary, to £100k Significant Equity Hybrid working (3 days London office per week) Vitality Healthcare Continuous career development and learning opportunities Influential role as part of a small, close knit team Complex and interesting work Apply now!