LLM Engineer - Freelancer

Monterail is a close-knit team of 150+ experts delivering innovative software for the fintech, proptech, wellness, and eCommerce sectors.

• Strong software engineering background with 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 language proficiency at B2/C1 level
• Availability for part-time or full-time work on a B2B contract

• 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 databases such as pgvector, Pinecone, and Qdrant
• Implement safe, reliable LLM endpoints (OpenAI, Anthropic, Azure)
• Work directly with clients to shape AI features and reduce manual effort
• Advise clients on appropriate AI use considering trade-offs around latency, accuracy, and cost