Backend Engineer – Python / FastAPI / LLM Pipelines | 100% Remote

Maximice sus posibilidades de que su candidatura sea seleccionada asegurándose de que su CV y sus habilidades se ajustan al perfil.
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 .

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 deve

📌 Backend Engineer (Santa María)
🏢 Infoser New Technologies
📍 Santa María