Monterail

LLM Engineer - Freelancer

Monterail  •  Wrocław, PL (Remote)  •  5 hours ago
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Job Description

We're building a network of LLM Engineers who can design, build, and integrate practical AI features into existing products. We're looking for people to collaborate with on a freelance basis - part-time or full-time, depending on project needs.

This role is focused on delivery, not ML research. What matters most is your engineering foundation and your ability to integrate AI into real production systems using Python, Node.js, or Ruby codebases.

Requirements

What we’re looking for

  • 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
  • Background in big data or data pipelines is a big plus
  • English B2/C1
  • Availability part-time or full-time (B2B contract)

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 do we mean by freelance?

Monterail

About Monterail

Monterail is a leading software development company specializing in creating innovative software for industry leaders. Based in Wrocław, Poland, our team of 130+ experts delivers solutions for fintech, proptech, wellness, and e-commerce sectors.

For over 15 years, we've been using Ruby on Rails and Flutter to build beautiful web and mobile applications. We've delivered 900+ successful projects for clients from different parts of the world.

In 2016 and 2017, we were recognized by Deloitte as one of the fastest-growing tech companies in Central Europe and were listed twice in the Financial Times 1000 ranking.

Monterail is your technology partner that stands out through long-term relationships, transparency, and high delivery quality. We serve global clients with a focus on the US market, providing senior-level expertise and time-zone-friendly collaboration.

Industry
IT & Software
Company Size
51-200 employees
Headquarters
Wrocław, PL
Year Founded
2010
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