Staff Back-End Engineer for a Series A Health Tech Startup
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AI Summary
The engineer will own features end-to-end, from design discussion through production rollout and monitoring, shipping TypeScript across the web app, Node/Express backend, and/or mobile app. Key tasks include designing and building fault-tolerant, HIPAA-compliant services with a focus on privacy, security, and stability, while also documenting work and integrating AI tools.
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.
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