Join a stealth AI startup as a founding engineer building trustworthy enterprise-grade agents. You will own features end-to-end, from data modeling to React interfaces, turning complex problems into product in days. Working alongside founders from top AI labs, you’ll solve the critical bottleneck of safe, autonomous AI operations for global enterprises.
Member of Technical Staff at seed-stage enterprise AI startup
Join a high-caliber stealth AI startup in London as a founding Member of Technical Staff and help solve the biggest bottleneck in enterprise AI adoption. Led by founders from world-class AI and security organizations, this seed-stage team is building the next generation of trustworthy autonomous agents and governed knowledge systems. As a product-focused full-stack engineer, you will own features from data model to UI, shipping complex systems in days while working alongside an elite engineering group. This is a rare opportunity to secure a career-defining seat with meaningful founding equity and a high-ownership culture, dedicated to making agentic AI safe and scalable for the world's largest enterprises.
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Location
London, United Kingdom
Compensation
Not Disclosed + Equity
Company
Confidential company
Role overview
About the company
Seed-stage enterprise AI startup
What you will do
- Architect and build full-stack product features, managing everything from backend data models and APIs to polished React frontends.
- Collaborate with the AI lead to translate complex LLM capabilities, retrieval systems, and eval loops into reliable production systems.
- Maintain a rapid shipping cycle, moving from loosely defined problems to working customer features in days rather than weeks.
Who this is a fit for
- Expert in TypeScript and React with deep backend experience and a proven track record of shipping production-ready features independently.
- Hands-on experience building AI agents, including working with LLMs, tool-calling, and evaluation loops in real-world applications.
- Thrives in early-stage environments with a high bias toward action, strong ownership, and the ability to navigate technical ambiguity.
Why this role is remarkable
- Join a high-caliber founding team with leadership experience from category-defining AI and security companies.
- Backed by top-tier VCs and prominent angel investors from leading AI labs and agent frameworks.
- Opportunity to work at the absolute frontier of agentic AI, building governed knowledge systems and autonomous workflows.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Confidential company wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.