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