Founding Backend Engineer (Python) — Scale & APIs (London)

American It Systems is seeking a founding engineer for a backend-first role in London. You will architect APIs and handle large-scale data, owning end-to-end backend systems from zero to one. The role emphasizes LLM/data engineering/scaling, with a lean team, and on-site work five days a week in London.

We value problem-solving, healthcare domain awareness, and rigorous software engineering. Ideal candidates have 2–6 years of experience, a CS/engineering/math degree, and a proven track record at