Join as the first engineer to scale a mission-driven consumer prototype into a polished production product. You will own the entire technical stack, bridging the gap between a working Next.js/Supabase prototype and a robust mobile application. This is a unique opportunity to build high-impact, socially conscious technology while shaping the engineering culture from the ground up.
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Founding Engineer at mission-driven consumer tech non-profit
We're looking for a Founding Engineer to take a mission-driven consumer prototype to the world. If you're a full-stack expert who cares about craft, trusts their instincts with AI APIs, and wants to build a product that matters without the typical 'startup' noise, this hybrid London role is for you.
Overview
Role overview
Company
About the company
Mission-driven consumer tech non-profit
Responsibilities
What you will do
- Own the full-stack development using Next.js, Supabase, and Anthropic’s API to build a high-quality conversation engine.
- Lead the mobile transition by building and deploying the app to TestFlight and Play Console using Capacitor.
- Architect future systems and data structures with a heavy focus on user trust, security, and high-performance streaming.
Candidate profile
Who this is a fit for
- Proven full-stack expertise with Next.js, TypeScript, and Postgres, capable of shipping end-to-end features independently.
- Experience launching mobile applications on iOS or Android, ideally through cross-platform tools like Capacitor or React Native.
- Strong background in AI-API integration, including prompt engineering, structured outputs, and managing real-time data streams.
What makes it remarkable
Why this role is remarkable
- Ship a product with a serious social mission built as a not-for-profit entity rather than a traditional startup.
- Exceptional autonomy to own the entire product lifecycle from prototype to global app store deployment.
- Flexible hybrid contract structure in London that offers deep impact without the constraints of a traditional corporate role.
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.