Founding Full-Stack iOS Engineer

### About the Role This is a founding engineering opportunity at a Y Combinator–backed consumer wearable startup operating at the intersection of biometrics, emotional intelligence, and mobile software. The company is building a wearable device that reads emotional states in real time — think of it as a fitness tracker, but for your EQ — powered by a proprietary computational neuroscience inference model processing over 150 audio and biometric signals. As the **Founding Full-Stack iOS Engineer**, you will own the companion iOS app end-to-end. This is a high-ownership, high-impact role: you'll be one of the first engineers at the company, expected to grow into a leadership position as the team scales. Prototypes are already on users' wrists — this is a real product with real momentum. ### What You'll Do * Own the companion iOS app end-to-end, from architecture decisions to pixel-perfect UI delivery * Surface emotional-state outputs (energy, mood, focus scores) from the backend inference model in a clear, compelling, and polished consumer experience * Collaborate closely with the founding team — including hardware, neuroscience, and design — to shape the full product experience * Build and maintain full-stack integrations between the iOS app and backend services * Set engineering standards and best practices as the mobile org grows around you ### What We're Looking For ### Required * Several years of professional experience shipping consumer-grade iOS apps (no fresh graduates) * Strong proficiency in **Swift** and the iOS ecosystem * Full-stack capability — comfortable working across mobile and backend layers * Track record of owning and delivering polished, production-quality mobile products * Self-directed and comfortable working in a fast-moving, early-stage environment ### Nice to Have * Experience with health, fitness, or wearable consumer apps * Familiarity with biometric data, Bluetooth/BLE hardware integration, or real-time data streaming * Prior founding or very early-stage startup experience ### Compensation & Benefits * **Salary:** ~$150,000 USD (or ~£75,000 GBP for London-based candidates) * **Equity:** Up to 1–2% — meaningful founding-level ownership * Early-stage company with Series A/B angel and strategic-partner funding round in progress * **Visa sponsorship:** Not available for new sponsorships; visa transfers are welcome ### Location Primary office in **London, United Kingdom**. The team is also present in San Francisco. Flexible arrangements considered for the right candidate — on-site or remote. Originally posted on [Himalayas](https://himalayas.app)