via Jazzhr
$120K - 200K a year
Design, develop, and ship mobile features end-to-end using React Native and TypeScript in a fast-paced startup environment.
4+ years of hands-on software development experience with advanced React Native and TypeScript skills, plus familiarity with native mobile development (Kotlin/Swift) is preferred.
We are searching for a Senior 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 + Redis What 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
This job posting was last updated on 12/5/2025