LLM Engineer, Freelancer

Monterail

LLM Engineer integrating AI functionality into products using Python, Node.js, or Ruby. This role is freelance and focuses on practical delivery rather than ML research.

Posted 6/2/2026part-timeRemote • 🇵🇱 PolandMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AzureJavaScriptNode.jsPythonRuby

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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)

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account Monterail Website LinkedIn All Job Openings 51 - 200 employees Founded 2011 🤝 B2B 🏢 Enterprise ☁️ SaaS B2B
Enterprise
SaaS Monterail is a technology company specializing in designing and developing web and mobile applications. The company focuses on creating software solutions that emphasize user experience and performance, often leveraging modern technologies and frameworks. Monterail works with clients to build custom applications tailored to specific business needs, enhancing productivity and digital transformation efforts. They employ a team of skilled developers who collaborate closely with clients to deliver innovative and practical solutions. LLM Engineer, Freelancer 🔥 13 minutes ago 🇵🇱 Poland – Remote ⏱ Part Time 🟡 Mid-level 🟠 Senior 🗣️ LLM Engineer Azure JavaScript Node.js Python Ruby Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
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 🎯 Requirements
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) Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

PythonNode.jsRubyLLM APIsRAG pipelinesembeddingsvector searchAI functionalitydocument Q&Asmart search

Soft Skills

client interactionexpectation managementindependent workadvisory skillsproblem-solving