Senior Mobile Engineer for a Series A Health Tech Startup

We are searching for aSenior Mobile Engineer to join a fast-growing Series A health technology startup focused on at-home monthly blood testing and health insights. They have raised a total of over $24 million across three funding rounds, with its latest round in November 2025 raising $19 million. Their main product is an easy, painless at-home kit for collecting your own blood sample. Your results appear in a private, HIPAA-compliant dashboard where you can track your biomarker changes over time and understand their implications for your health.The Tech Stack:• TypeScript end-to-end• Express + React Router 7 (web)• tRPC• React Native (mobile)• React Query• Postgres + RedisWhat You’ll Do:• Own features end-to-end — from design discussion to production rollout and monitoring. • Ship TypeScript on React Native. • Document your work so others can move fast. • Be a great generalist across React Native OR an expert in a few areas. ​​​​​​​You’re a great fit if you…• Bring 4+ years of hands-on software experience, with advanced and React Native TypeScript skills.• Are comfortable working in a fast-paced startup where procedures aren't clearly defined. • Have built some great things you can show us and describe in detail. • Manage your own time, break down ambiguous problems, and deliver. • Use AI tools as an accelerator—never as the decision-maker. • Are not submitting an AI resume. (If you are human, please say so in your application)You’re an excellent fit if you…• Have experience with Kotlin/Swift and native mobile development. • Are comfortable with monorepos.​​​​​​​What They Offer• Salary: $120k – $200k• Equity: 0.05 % – 0.25 %• Benefits: Health, Dental, Vision• Time Off: Flexible PTO• Work Setup: Fully remote​​​​​​​ Apply tot his job