Full-Stack Engineer

US-only / No contractors / No recruiters

This is a senior/staff position; we are not currently offering junior roles.

Rythm Health sends you an easy, painless at-home kit to collect your own blood sample. Your results show up in a private, HIPAA-compliant dashboard, where you can see how your biomarkers change over time and learn what they mean for your health.

• Type Script end-to-end
• Express + React Router 7 (web)
• tRPC
• React Native (mobile)
• React Query
• Postgres + Redis

• Own features end-to-end — from design discussion to production rollout and monitoring.
• Ship Type Script on the web app, Node/Express backend, and/or mobile app.
• Contribute to (or learn) React Native.
• 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.
• Be a great generalist across our stack OR an expert in a few areas.
• Use the latest AI tools and SDKs to build AI-enriched features.

• Live and work in the U.S. and communicate clearly in English.
• Bring 5+ years of hands‑on software experience, with advanced Type Script 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.
• Have experience with React Router, Next.js, or similar frameworks.
• Understand backend design and data modeling in SQL/Postgres.
• Are not submitting an AI resume. (If you are human, please say so in your application)
• Have written reliable tests with Vitest, Cypress, Jest, etc.

• 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.

• Salary: $160k – $220k
• Equity: 0.05 % – 0.25 %
• Benefits:
  Health, Dental, Vision
• Time Off:
  Flexible PTO
• Work Setup:
  Fully remote

If you have a better way to showcase your abilities and what you've built, let us know.