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Senior Backend Engineer (GenAI)

Next-Link

Sant Cugat del Vallès, B, Spain Full-time February 19, 2026

Found Description

We are looking for a Senior Backend Engineer with a strong GenAI background to join our team and work 100% dedicated on a strategic project for one of our top clients in the pharmaceutical sector. In this role, you will design and build advanced backend and AI-driven systems, contributing to the evolution of an enterprise knowledge platform powered by Retrieval-Augmented Generation (RAG) and agentic architectures. Main Responsibilities Design and implement RAG architectures and agentic workflows to improve accuracy, relevance, and performance of AI-powered search and knowledge systems. Develop high-quality, modular, and maintainable Python backend services, with a strong focus on testing, type hinting, and clean architecture. Build and operate document processing and data pipelines to transform unstructured data into AI-ready formats (e.g. using Airflow, AWS Glue, OCR tools). Integrate backend services across complex enterprise systems, including integrations via platforms such as Snap...

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