Join a high-calibre team at a well-funded stealth startup building trustworthy enterprise AI systems. You will pair with the AI lead to move agentic architectures from proof-of-concept to production. This founding role requires a full-stack engineer capable of shipping LLMs, eval loops, and backend systems into production environments.
Member of Technical Staff, AI at well-funded stealth AI startup
Join an elite team of engineers at a well-funded stealth startup building the future of trustworthy enterprise AI. As a founding Member of Technical Staff, you'll pair with world-class AI leadership to ship agentic systems into production, solving the biggest bottlenecks in AI adoption. This is a high-ownership role for a full-stack engineer who has moved beyond demos to building real LLM-powered tools. If you thrive in fast-paced environments where action and results are rewarded above all else, this London-based hybrid role offers the chance to catapult your career while working with top-tier talent and high-equity potential.
Want to apply for this role?
C
Jack finds you jobs at companies like Confidential company. Talk to Jack to get considered for roles that fit what you're great at.
Location
London, United Kingdom
Compensation
Not Disclosed
Company
Confidential company
Role overview
About the company
Well-funded stealth AI startup
What you will do
- Architect and deploy production-grade AI agents, bridging the gap between applied AI research and robust backend engineering.
- Implement complex evaluation loops, tool-calling frameworks, and knowledge systems to ensure AI reliability and performance.
- Rapidly iterate on product features based on real-world feedback, moving from experimental prototypes to shipped code in days.
Who this is a fit for
- Proven track record of shipping production AI agents, including hands-on experience with LLMs, retrieval systems, and evaluation frameworks.
- Strong full-stack engineering foundations with the ability to own features end-to-end across AI logic and backend infrastructure.
- Entrepreneurial mindset comfortable in a fast-paced, seed-stage environment where you prioritize action and outcomes over process.
Why this role is remarkable
- Join an elite engineering team with experience scaling world-class AI and developer security platforms from zero to significant revenue.
- Work at the cutting edge of agentic AI, solving the critical challenge of making LLMs reliable and trustworthy for enterprise adoption.
- High-impact founding seat offering meaningful equity and a high-ownership culture with minimal bureaucracy and rapid iteration cycles.
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.