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