As the first engineering hire, you will build AI agents that automate complex data reasoning for enterprise industries. You will own features end-to-end across AI orchestration, data engineering, and multi-tenant infrastructure. This is a high-autonomy role designed for an exceptional engineer ready to shape the technical foundation of a next-generation intelligence platform.
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Talk toJack
London, United Kingdom£100k–150k + Equity
Founding Engineer at High-growth AI data startup
Are you ready to be the first engineering hire at a high-growth AI startup? We are looking for an exceptional Founding Engineer in London to build intelligent agents that reason over complex, unstructured data for enterprise clients. With a base salary up to £150k plus meaningful equity, you will own the technical direction across AI orchestration and data infrastructure. If you thrive in fast-paced environments, possess a bias for action, and want to ship production-grade LLM systems from the ground up, this is your opportunity to shape a next-generation platform.
Overview
Role overview
Company
About the company
High-growth AI data startup
Responsibilities
What you will do
- Build and deploy production-grade LLM orchestration frameworks and evaluation loops using Python and TypeScript.
- Design scalable data pipelines and medallion architecture to ingest and transform heterogeneous data sources.
- Architect secure, multi-tenant cloud infrastructure and manage end-to-end feature delivery for enterprise customers.
Candidate profile
Who this is a fit for
- Proven track record of building and shipping real products with a high bias for action and speed.
- Proficiency in TypeScript/React and Python, with a mastery of modern AI coding tools to maximize output.
- Comfortable with ambiguity and a 6-day startup work cycle in a fast-paced, high-accountability environment.
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What makes it remarkable
Why this role is remarkable
- Join as employee #1 with significant equity and direct influence on product strategy alongside the founders.
- Backed by top-tier venture programs and working directly with major enterprise clients on production AI systems.
- Unique opportunity to work at the intersection of LLM orchestration and high-stakes, unstructured data processing.
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