AI Full-Stack Product Engineer

Our client is an early-stage AI company building tools that help large language models automate complex, business-specific workflows. With strong funding and experienced technical founders at the helm, they’re now hiring senior product engineers to join their core London-based team.

This is not a role for generalists, juniors, or engineers who only work on one side of the stack. You’ll be joining as one of the first engineers on the ground, expected to ship quickly, make architectural decisions, and contribute to product direction in a high-trust, low-hierarchy environment.

Who we’re looking for:

5–8 years of full-stack engineering experience in product-led, fast-moving teams
Proven track record of building and shipping customer-facing products
Fluency in either Python or React, with solid ability across the rest of the stack
Familiar with tools like Next.js, TypeScript, FastAPI, and Postgres
Able to operate independently across backend, frontend, and infrastructure
Comfortable talking through technical decisions, product trade-offs, and what did or didn’t work
Genuinely curious about AI, with an interest in real-world applications

Bonus points for:

Startup experience (especially Series A or B)
Non-traditional backgrounds with evidence of deep learning or domain expertise
Strong technical or academic foundations in a relevant or adjacent field

Not a fit if:

You’re junior, early-career, or have less than 5 years’ relevant experience
You work solely on backend or frontend, without full-stack capability
You’re focused on AI research or ML modeling (this is a product build role)
You come from a large enterprise background with limited startup exposure
You require visa sponsorship or remote work — this is in-person, London-based, and visa sponsorship is not available

This role is ideal for engineers who want to work directly with exceptional peers, own real product outcomes, and build novel tools in a high-impact AI environment. If that sounds like you, get in touch.