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Senior AI Platform Backend Engineer (LLM), Madrid

EPAM | Madrid, Spain | Posted May 31, 2026

Position Overview

Senior AI Platform Backend Engineer (LLM)
We are seeking a talented and proactive Senior AI Platform Backend Engineer (LLM) to lead the design, optimization and deployment of machine learning pipelines using MLOps in cloud environments. In this role, you will implement LLM-based solutions for chatbots and Retrieval-Augmented Generation (RAG) systems and develop robust DevOps/MLOps pipelines for production.

Responsibilities

- Maintain and enhance CI/CD pipelines using tools such as GitHub Actions, AWS CodePipeline, Jenkins or ArgoCD
- Design and develop backend architecture for AI Verification and ChatGPT services utilizing Python and FastAPI
- Build, optimize and scale classifiers and tools leveraging machine learning, encoders and rule-based models
- Architect and implement solutions following Domain-Driven Design (DDD) and Test-Driven Development (TDD) best practices
- Design, develop, and maintain a production-grade LLM-as-a-judge service for ver...

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