Founding AI Engineer

Founding AI Engineer | London | AI-first product studio - £100,000 - £150,000 + Equity

Employee #3

I'm working with a well-funded early-stage startup building the agent systems that turn a spec into a shipped, live product, not a prototype. They've recently closed a multi-million-dollar round backed by leading technology and gaming investors.

This is a founding hire working directly with the founder, owning the agent process end to end.

The role

• Own the agent process: model selection, prompting, and agent loop/orchestration design
• Own the context layer: managing context and using data to improve agent output
• Build on and extend the current agent pipeline, deciding where it needs more flexibility for deeper context and planning
• Real scope to shape how AI is used across the whole product, not bolted onto one feature

They're looking for

• Someone who's built AI agents that write, test, or ship code, not just agents that answer questions or automate business tasks
• Genuine hands-on builder energy: heavy personal use of tools like Claude Code or Cursor, side projects, hackathons, or open-source work in this space count for a lot here
• Comfortable in an early-stage, in-person, high-ownership environment