Staff Back-End Engineer for a Series A Health Tech Startup

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Description

We are searching for a Senior Fullstack Engineer to join a fast-growing Series A health technology startup focused on an innovative at-home monthly blood testing and health insights platform. This company has raised over $24 million across three funding rounds, with its latest round in November 2025. 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 the web app, Node /Express backend, and/or mobile app. Design and build fault-tolerant, HIPAA-compliant services with a strong focus on privacy, security, and stability. Document your work so others can move fast. Use the latest AI tools and SDKs to build AI-enriched features. You’re a great fit if you… Bring 6+ years of hands-on software experience, with advanced 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. Unde

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