As the first engineering hire, you will lead the evolution of an AI-driven prototype into a production-ready platform. You will translate business vision into technical architecture using TypeScript, React, and Node.js while managing custom agent infrastructure. This is a high-agency role for a technical leader looking to build a foundation from the ground up.
This job is no longer actively hiring. Talk to Jack to find live roles.
Full-Stack Founding Engineer at Early-stage AI startup
Join an early-stage AI startup as a Founding Engineer and take the lead in transforming an advanced prototype into a production-ready platform. This high-impact role offers significant equity and the chance to architect custom agent infrastructure from the ground up. If you are a high-agency engineer with deep expertise in TypeScript and Node.js, this is your opportunity to shape the technical foundation of a future industry leader while working in the heart of London’s tech scene.
Want to apply for this role?
C
This role is no longer actively hiring, but Jack can still help you discover similar open roles that fit.
Location
London, United Kingdom
Compensation
Not Disclosed + Equity
Company
Confidential company
Role overview
About the company
Early-stage AI startup
What you will do
- Transition an existing prototype into a scalable, production-grade product using modern web technologies.
- Architect and manage custom backend systems and sophisticated AI agent infrastructure.
- Serve as a technical partner to the founders, making critical decisions on architecture and product strategy.
Who this is a fit for
- Expert-level proficiency in TypeScript, React, Node.js, and building complex backend architectures.
- Proven track record of high agency and the ability to translate product vision into technical execution.
- Experience or strong interest in AI agent infrastructure and scaling early-stage technical products.
Why this role is remarkable
- Significant equity position as a core member of the founding team in a high-growth sector.
- High-impact leadership opportunity to own the entire technical roadmap and build out the engineering function.
- Collaborative environment based in a vibrant East London tech hub with a 4-day in-office culture.
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.