Join a high-velocity, early-stage team as the first engineering hire to build the future of personal intelligence from the ground up. You will design retrieval-augmented memory systems and lead macOS development to help users compound their knowledge into sharper instincts, directly shaping the technical architecture and product direction alongside the founders.
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Learn about Jack
Founding Engineer at The Nimble Memory Company
Are you ready to build the machine, not just follow a ticket queue? We are looking for a Founding Engineer to join a venture-backed London startup building the next generation of personal judgment infrastructure. You will work directly with the CTO to design AI systems that turn personal knowledge into actionable instincts. This is a high-ownership role with meaningful equity, offering you the chance to define the stack, the product, and the engineering culture from day one in a rapidly growing AI ecosystem. If you have high agency and a passion for AI-native products, this is your ground-floor opportunity.
About this role
Role overview
About the company
The Nimble Memory Company
Venture-backed London startup building AI-native personal judgment infrastructure
What you'll do
What you will do
- Design and architect core memory infrastructure, focusing on retrieval, reasoning, and AI agent systems that make personal context useful.
- Lead the development of the macOS desktop application, owning the user experience from initial concept to cross-platform expansion.
- Collaborate directly with the CTO to set the engineering culture, defining how the team ships code, reviews work, and balances quality with speed.
Who you are
Who this is a fit for
- Demonstrated expertise in backend or full-stack engineering with a high-agency mindset and a strong bias toward shipping over over-processing.
- Experience building products from zero, ideally within a startup environment or through significant independent projects in the AI or developer tool space.
- Deep intuition for product design and a customer-obsessed approach to gathering user feedback and iterating on complex, ambiguous technical problems.
Why this role
Why this role is remarkable
- Transition from a ticket queue to a founding role where you define the machine and its purpose rather than just slotting into an existing process.
- Join a venture-backed startup at the ground floor, gaining meaningful equity and the opportunity to influence the burgeoning AI ecosystem in London.
- Work in a high-agency environment where your decisions on architecture and stack choices directly determine the trajectory of a new category in AI.
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 15 million jobs daily and helps you discover roles at companies like this.
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.