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

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. • Understand backend design and data modeling in SQL/Postgres. • Have written reliable tests with Vitest, Cypress, Jest, etc. You re an excellent fit if you... • Have used AI SDKs (AI SDK, OpenAI, Anthropic, etc.) with production software. • You have built or maintained HIPAA-compliant or other regulated healthcare software. • Are comfortable with internal tooling (e.g., Retool) and thorough documentation habits. • Bring deeper expertise in React Native or sophisticated systems architecture. • Are comfortable with monorepos. What They Offer • Salary: $160k - $210k • Equity: 0.05 % - 0.25 % • Benefits: Health, Dental, Vision • Time Off: Flexible PTO • Work Setup: Fully remote This is a Senior / Staff level role. It is fully remote within the U.S. only. Originally posted on Himalayas