Founding Engineer (+ Equity) at early-stage consumer healthtech startup

Job Title

Founding Engineer

Salary

Not Disclosed + Equity

Company Description

Early-stage consumer healthtech startup

Job Description

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.

Location

London, UK

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.

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.

The ideal candidate

• 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.

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