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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, asy
📌 Backend Engineer – Python (España)
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📍 España
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