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

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Build retrieval-augmented generation pipelines and agent workflows on top of commercial and open-source LLMs

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Write and version prompts, tools and evaluation sets

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Integrate AI features into the product's Python and TypeScript services

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Measure quality, latency and cost, and improve them release over release

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Add guardrails, logging and tracing for production use

What you bring

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3+ years of software engineering, at least 1 building LLM applications in production

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Strong Python; experience with an LLM framework or SDK (LangChain, LlamaIndex or direct provider APIs)

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Vector databases (pgvector, Pinecone or Weaviate) and embedding-based search

- API design, testing and CI/CD habits

- Advanced English

Nice to have

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Evaluation tooling (LangSmith, Braintrust, Ragas)

- TypeScript and React

- Fine-tuning or classical ML background

Originally posted on Himalayas