Join as the first engineer to build a mobile-first fitness platform from the ground up. You will own the entire technical stack, making key architectural decisions while shipping fast in an AI-assisted environment. Working closely with a notable founder and fractional CTO, you will transform early insights into a high-impact product.
Back to all jobsTalk to Jack
Learn about Jack
Founding Engineer at early-stage consumer healthtech startup
Are you ready to be the first hire at a mission-driven startup? We are looking for a product-minded Founding Engineer to build a mobile-first fitness platform from scratch. This is a rare opportunity to own the architecture, choose your stack, and work directly with a notable founder on a product designed to help people reclaim their wellness. If you have 4–7 years of experience, a love for greenfield development, and the desire to join a well-positioned early-stage venture with equity on the table, this is the role for you. Join a team where you aren't just executing a backlog—you're shaping the future of the product.
Want to apply for this role?
C
Jack finds you jobs at companies like Confidential company. Talk to Jack to get considered for roles that fit what you're great at.
Location
London, United Kingdom
Compensation
Not Disclosed + Equity
Company
Confidential company
Role overview
About the company
Early-stage consumer healthtech startup
What you will do
- Lead the end-to-end development of a mobile-first consumer application using TypeScript and modern managed cloud services.
- Collaborate with founders to translate product vision into scalable technical features while maintaining high security and data standards.
- Implement AI-assisted development workflows to accelerate shipping cycles and maintain a high bar for product quality.
Who this is a fit for
- 4–7 years of full-stack experience with a proven track record of shipping consumer-facing mobile or web applications.
- Strong product instinct with the ability to communicate technical trade-offs clearly to non-technical team members.
- Proficiency in TypeScript and modern frameworks like React Native, with a preference for low-ego, early-stage ambiguity.
Why this role is remarkable
- Full ownership of a greenfield project with the autonomy to select the tech stack and shape the product architecture.
- High-growth potential with a recognizable founder and a strong distribution strategy already in place from day one.
- Mission-driven work focused on improving wellness for a significant, underserved demographic through an adaptive fitness platform.
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.