Middle applied AI / LLM Engineer (Python)

What you will do:

Design and build LLM pipelines, AI agents, and RAG-based systems, including function and tool calling and structured outputs using JSON schemas
Develop production-grade Python services using Django, Celery, and Redis
Validate product hypotheses using real-world data and analytics
Measure and optimize LLM quality, performance, and cost
Collaborate closely with product managers and engineers to turn ideas into scalable solutions

Requirements:

Experience with NLP projects in production, 1+ year
Strong experience building production LLM applications
Hands-on expertise with RAG, embeddings, vector search, prompt engineering, and LLM evaluation
Experience with LangGraph, LangChain, or similar frameworks
Solid Python backend background, 2+ years (Django, PostgreSQL, async programming)
Strong SQL/Pandas skills and a data-driven mindset
Language proficiency: English at B2–C1, Russian at C1
Location: any, except Russia and Belarus

Additional experience we value:

Hands-on work with vector databases such as Qdrant or pgvector
Fine-tuning, text classification, and embedding model development
Working knowledge of Kubernetes, gRPC, or Go

Why join us:

At Mad Devs, you will join a company that values creativity, strategic thinking, and continuous improvement. You will work on projects that reach millions of users worldwide, alongside a strong and supportive team. Here, you will grow professionally, take on meaningful challenges, and contribute to products that solve real problems at scale.