As the first non-founding engineer, you will architect the foundations of a platform leveraging multi-agent systems to accelerate industrial development. Working directly with the founders, you will own the backend services, design scalable cloud infrastructure, and build responsive UI components, moving from wireframes to production-ready features with high autonomy and speed.
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London, United KingdomNot Disclosed + Equity
Founding Engineer (Backend-Leaning) at Early-stage AI agent startup
Are you a seasoned engineer ready to build the future of autonomous systems? This is a rare opportunity to join a well-funded AI startup in London as the first non-founding engineer. You'll have total autonomy to architect backend systems, design AI agent pipelines, and shape the product from the ground up while receiving a significant equity stake. If you have 5+ years of experience and a bias for shipping, this is your chance to lead technical innovation at a mission-driven company.
Overview
Role overview
Company
About the company
Early-stage AI agent startup
Responsibilities
What you will do
- Design and build secure backend services in TypeScript or Python, utilizing REST endpoints, queue-based processing, and async AI pipelines.
- Architect and manage cloud infrastructure on GCP using serverless functions, Pub/Sub, and modern CI/CD processes for production excellence.
- Translate product requirements and wireframes into accessible React components, ensuring a seamless user experience across the entire digital estate.
Candidate profile
Who this is a fit for
- 5–10+ years of experience building production backend systems with a strong proficiency in TypeScript, Python, and modern cloud architecture.
- Proven track record with GCP or similar cloud providers, including experience with containers, DevOps, and infrastructure-as-code.
- Pragmatic communicator with a bias for shipping who thrives in ambiguous, fast-paced environments and is comfortable owning frontend features.
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What makes it remarkable
Why this role is remarkable
- Significant autonomy as the first engineering hire after the CTO, setting the technical culture and architectural standards from day one.
- Opportunity to build complex multi-agent AI systems and asynchronous pipelines for high-impact industrial applications.
- Generous EMI equity package rewarding early impact in a well-funded startup backed by top-tier mission-driven investors.
Jack & Jill
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.
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 14 million jobs daily and introduces you directly to hiring managers.
How does this work?
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 it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
Jack