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Monterail Tech Network

LLM Engineer - Freelancer

RemotePoland only
Published
Role
AI / ML
Employment
Contract
Salary not disclosed
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Open to PL only. Set where you work from to check your eligibility.

No BS summary

Freelance LLM engineer with a strong software engineering background in Python, Node.js, or Ruby. Must have production LLM API integration experience, RAG, embeddings, vector search, and English B2/C1. B2B contract, part-time or full-time depending on project needs.

Core skills

LLM APIsRAGVector search

Required skills

Python/Node.js/RubyOpenAI/AnthropicEmbeddings

Optional skills

Big dataData pipelines

Required languages

English B2/C1

What you'll do

  • Add AI functionality into existing Python, Node.js, and Ruby codebases
  • Build LLM-powered features: chat, summaries, classification, smart search, document Q&A
  • Design lightweight RAG pipelines using embeddings and vector search
  • Work with vector DBs (pgvector, Pinecone, Qdrant)
  • Implement safe, reliable LLM endpoints (OpenAI, Anthropic, Azure)
  • Work directly with clients to shape AI features and reduce manual effort
  • Advise clients when NOT to use AI and navigate trade-offs around latency, accuracy, and cost

What they require

  • Strong software engineering background - Python, Node.js, or Ruby
  • Hands-on experience integrating LLM APIs into production systems (OpenAI, Anthropic, or similar)
  • Ability to design pragmatic AI solutions within existing architectures
  • Experience building RAG pipelines, embeddings, and vector search
  • Understanding of cost, latency, and reliability constraints of AI systems
  • Ability to work independently with clients and set realistic expectations
  • Preferred: Background in big data or data pipelines is a big plus
  • English B2/C1
  • Availability part-time or full-time (B2B contract)
SaaS
Salary not disclosed