AI Engineer – LLM Applications (US Startup · Remote LATAM)

Client: mid-size US startup (Series B, about 150 people) · Location: remote, LATAM, 4+ hours overlap with US Eastern · Level: mid Engagement: full-time contractor You will ship LLM-powered features into a B2B SaaS product, working with product engineers from prototype to production. What you will do - Build retrieval-augmented generation pipelines and agent workflows on top of commercial and open-source LLMs - Write and version prompts, tools and evaluation sets - Integrate AI features into the product's Python and TypeScript services - Measure quality, latency and cost, and improve them release over release - Add guardrails, logging and tracing for production use What you bring - 3+ years of software engineering, at least 1 building LLM applications in production - Strong Python; experience with an LLM framework or SDK (LangChain, LlamaIndex or direct provider APIs) - Vector databases (pgvector, Pinecone or Weaviate) and embedding-based search - API design, testing and CI/CD habits - Advanced English Nice to have - Evaluation tooling (LangSmith, Braintrust, Ragas) - TypeScript and React - Fine-tuning or classical ML background Originally posted on Himalayas