Backend Engineer – Python / FastAPI / LLM Pipelines | 100% Remote We are looking for an experienced Backend Engineer to join an international technology project focused on building an intelligent platform that combines Python backend development, APIs, LLM-based agentic workflows and large-scale data processing .
Asegúrese de presentar su candidatura con toda la información solicitada, tal como se expone en la descripción del puesto a continuación.
Location: Spain Work model: 100% Remote Environment: International team English: Good professional working proficiency required What will you be working on? You will help build and operate the Python backend behind an AI-powered platform used to process, compare, update and evaluate complex technical content.
Your responsibilities will include: Designing and maintaining REST APIs using Python and FastAPI .
Developing typed API schemas with Pydantic and strong typing practices.
Building asynchronous backend components and secure endpoints.
Developing agentic AI pipelines using LangGraph and LangChain .
Implementing workflows for content discovery, matching, editing, validation and evaluation.
Integrating Azure OpenAI models using structured outputs and function/tool calling.
Developing RAG-based solutions using embeddings and FAISS .
Implementing grounding, provenance and hallucination-control mechanisms.
Processing engineering datasets and large structured XML documents.
Performing data transformations using pandas and openpyxl .
Developing database integrations using SQLAlchemy 2.X, PostgreSQL and AWS Aurora .
Containerizing and deploying backend workloads using Docker and AWS ECS/Fargate .
Working with AWS services such as ECR, Secrets Manager, RDS and SSO .
Maintaining automated testing practices using pytest .
What are we looking for? Strong professional experience with Python .
Solid experience developing APIs with FastAPI .
Experience with Pydantic, async Python and typed backend development .
Ex
📌 Backend Engineer (Gijón)
🏢 Jobtome
📍 Gijón