Senior Full-Stack AI Engineer (Health Tech)

At Niuro, we're hiring a Senior Full-Stack AI Engineer for a US health tech company. Full-time, remote from LATAM (Costa Rica preferred), approximately 6-month contract, start ASAP.

About the role
Join a small, flat engineering team building on an existing health tech platform: a TypeScript monorepo with a NestJS backend and multiple Next.js clients. You'll bring hands-on experience shipping LLM features to real users into the team's day-to-day work.

What you'll do
- Own features end to end across the NestJS backend, the Next.js clients and the data layer.
- Build LLM features, agentic workflows with tool calling and data enrichment, with evaluation and failure handling from the start.
- Work with patient and provider data with the care regulated data requires.
- Make technical decisions and deliver with minimal supervision.

What we're looking for
- 5+ years of full-stack development.
- LLM features shipped to production: prompt design, retrieval (RAG), evaluation and handling model failures.
- NestJS and Next.js in production with TypeScript; monorepo experience.
- REST and/or GraphQL APIs, solid PostgreSQL, data pipelines and integrations.
- Observability, Docker and CI/CD.
- C1 English.
- Available to start within two weeks for about six months.

Nice to have: GCP or AWS, Python, HIPAA or regulated data, healthcare or EHR, experience with US companies.

Location: Remote - Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Uruguay, Venezuela

Skills required for this job:

• Docker
• GraphQL
• Large language models (LLMs)
• NestJS
• Next.js
• PostgreSQL
• Retrieval-augmented generation (RAG)
• TypeScript