LLM Engineer Freelancer — Opportunihub
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LLM Engineer Freelancer

Monterail · Kraków, Kraków, Woj. Małopolskie, Polska

At a glance

Type
Job
Organisation
Monterail
Location
Kraków, Kraków, Woj. Małopolskie, Polska
Work mode
Remote
Deadline
Rolling / not stated
Posted
28 Jul 2026

About this job

We're building a network of <strong>LLM Engineers</strong> 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.<br><br>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.<br><br><strong>Requirements<br><br></strong><strong><strong>What we're looking for<br><br></strong></strong><ul><li>Strong software engineering background - Python, Node.js, or Ruby</li><li>Hands-on experience integrating LLM APIs into production systems (OpenAI, Anthropic, or similar)</li><li>Ability to design pragmatic AI solutions within existing architectures</li><li>Experience building RAG pipelines, embeddings, and vector search</li><li>Understanding of cost, latency, and reliability constraints of AI systems</li><li>Ability to work independently with clients and set realistic expectations</li><li>Background in big data or data pipelines is a big plus</li><li>English B2/C1</li><li>Availability part-time or full-time (B2B contract)<br><br></li></ul><strong>What You'll Do<br><br></strong><ul><li>Add AI functionality into existing Python, Node.js, and Ruby codebases</li><li>Build LLM-powered features: chat, summaries, classification, smart search, document Q&amp;A</li><li>Design lightweight RAG pipelines using embeddings and vector search</li><li>Work with vector DBs (pgvector, Pinecone, Qdrant)</li><li>Implement safe, reliable LLM endpoints (OpenAI, Anthropic, Azure)</li><li>Work directly with clients to shape AI features and reduce manual effort</li><li>Advise clients when NOT to use AI and navigate trade-offs around latency, accuracy, and cost<br><br></li></ul><strong><strong>What do we mean by freelance? <br><br></strong></strong><ul><li>Read more at Monterail Tech Network</li></ul><br/><br/>Please mention the word **WINNERS** and tag RMmEwMTo0Zjk6NmE6MTY2YTo6Mg== when applying to show you read the job post completely (#RMmEwMTo0Zjk6NmE6MTY2YTo6Mg==). This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.

How to apply

  1. 1 Read the full details above and confirm you meet the eligibility criteria.
  2. 2 Prepare your documents — an updated CV, and any cover letter, proposal or certificates required.
  3. 3 Click Apply on official site to complete your application on Monterail’s official page.
  4. 4 Submit as early as possible — many close once filled.
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Frequently asked questions

How do I apply for LLM Engineer Freelancer?

Review the full details and eligibility on this page, prepare your documents, then use the “Apply on official site” button to complete your application on Monterail’s official page.

Is this opportunity remote or location-based?

This opportunity is remote-friendly and open to applicants who can work from anywhere.

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