EPAM is a leading integral provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

We are looking for a Lead Backend Developer with Python and AI expertise to drive the design and delivery of robust AI-powered API services and agentic workflows, while providing technical leadership across the team.

This role focuses on language model interaction with internal systems, vector databases, and external tools via orchestration frameworks, treating LLMs as components in a secure, scalable distributed system. You will define technical direction,



own API contracts and service reliability end-to-end, ensure AI edge cases fail gracefully, and integrate LLMs using rigorous systems engineering with built-in evaluation, observability, fallback handling, and cost awareness. As a lead, you will also mentor engineers, shape architecture across pods, and champion engineering excellence.

Responsibilities

Lead the design and implementation of backend API services and LLM orchestration layers
Define and evolve reliable, reusable orchestration frameworks and logic for downstream developer consumption
Architect and oversee complex RAG pipelines, including document ingestion, chunking, embedding, and retrieval optimization
Drive the development and integration of agent tools using LangChain, LangGraph, and potentially MCP (Model Context Protocol)
Set the standard for integrating LLMs with rigorous systems engineering, embedding evaluation, observability, fallback handling, and cost aw

📌 Lead Backend Developer (Colombia)
🏢 EPAM Systems
📍 Colombia