Senior Software Engineer

Backend Engineer – AI Startup | London | £120k + Equity

I’m working with a fast-growing, well-funded AI startup building a product already being used daily and has huge uptake.

They’re now looking for a Backend Engineer to join their early engineering team in London, working directly alongside the CTO and founders.

This is a genuinely hands‑on position where you’ll have significant ownership of the technology, building the backend infrastructure that powers an AI‑native product, including APIs, agent orchestration, LLM integrations, RAG pipelines, and background processing.

• Celery / background processing
• Backend architecture & distributed systems

You’ll take features from idea through to production
, make architectural decisions, solve scaling and performance challenges and help shape how the engineering function develops as the company grows.

You’ll ideally have 5+ years of backend engineering experience, with strong commercial Python/Django experience and a track record of owning production systems.

We’re particularly interested in engineers who enjoy startup environments, want genuine technical ownership and are excited about building at the cutting edge of AI rather than simply integrating an LLM API.

Central London – 5 days per week in the office

Open to relocating exceptional engineers from Europe

This is a great opportunity for someone who wants to join an ambitious company early, work directly with the founding team and have a real influence over the product and technical direction.