AI Engineer

Job description

AI Engineer

Frontier AI | London or Paris

Compensation: Up to £180k + equity package

About

Frontier AI startup building state-of-the-art agentic systems that automate complex, multi-step tasks typically done by humans. Well-funded, with a value prop combining cutting-edge research (in computer use and proprietary models) with forward-deployed implementation alongside enterprise clients.

You'd be joining the Agent team - a small, high-calibre group building the systems and tooling that actually makes agents work in production. This is engineering embedded in research - the model team trains the models; the agent team builds everything around them.

What you'll do

• Build and improve agent logic: planning, tool use, skills, memory, orchestration
• Work on internal and academic benchmarks to measure and push agent performance
• Translate research ideas into working systems (tool calling, new agent capabilities, training signals)
• Build and evolve the in-house agent stack used across the organisation
• Partner closely with researchers to turn ideas into production-ready agent behaviour
• Iterate quickly, experiment often, and own problems end-to-end

What you'll need

• Senior-level engineering experience from a high-bar environment (top AI lab, scale-up, or Big Tech)
• Strong software engineering fundamentals and system design skills
• Interest in agentic AI - prior agent experience is helpful but not mandatory
• Proactive, autonomous, and creative - you spot gaps and fill them
• Comfortable working in fast-moving, loosely specified problem spaces

This is an opportunity to build agentic AI at the frontier - not writing papers, but shipping systems that push the boundaries of what agents can do.

Shortlisted candidates will be contacted within 48 hours.

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full-time jobs

Published at

09-02-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English