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# Backend Python Developer

- **Company:** Delfos Energy
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Airflow, Unit Testing, Computer Engineering, Continuous Integration, Data Infrastructure, Relational Databases, Entity Relationship Models, Systems Analysis, Python (Programming Language), Machine Learning, Software Architecture, SQL Databases, SQLAlchemy, Web Applications, Flask (Web Framework), Git, Fastapi, Pytest, Kubernetes, Information Technology, Data Analytics, Data Pipelines, Docker
- **Published:** August 5, 2026
- **Apply:** https://www.buscojobs.com.es/backend-python-developer-en-madrid-ID-365501245

## About the Role

Bachelor's degree in Computer Science, Computer Engineering, Systems Analysis and Development, or related fields
Experience with Dagster, Airflow, or Prefect
Knowledge of Python, SQLAlchemy, FastAPI or Flask, Pydantic, SQL, Data modeling, Git, Docker, Docker Compose
Knowledge of AI/ML and data-driven automation
Fluent English level
Nice to Have
TimescaleDB
Alembic
Pytest
Type hints
CI/CD
Kubernetes (deployments, services, ingress)
Unit testing
Knowledge of software architecture (patterns, repositories, services)

## Description

Your Mission Interested in working with an AI Data Platform supporting sustainability, with backend Python development and Data Orchestration, i.e. airflow?This is your chance to become part of a startup internationally recognized for its cutting-edge technology.We are a predictive technology platform focused on maximizing performance and digitalizing operations in renewable energy parks.Our mission is to develop optimized, profitable, and user-friendly solutions, ensuring high performance and sustainability for energy producers.Your ProfileWe are looking for a Mid-Level Python Developer to strengthen our team and further boost our technical structure!If you are driven by innovation and enjoy a collaborative environment, this could be the ideal opportunity for your career.Main ResponsibilitiesDevelop, maintain, and evolve web applications using PythonCreate and integrate APIs using FastAPIWrite SQL queries and interact with relational databasesParticipate in data modeling (entity-relationship) and normalizationUse tools such as Git and Docker throughout the development lifecycleApply, whenever possible, emerging AI/ML solutions and data-driven automation to improve delivery efficiencyCollaborate with the team on continuous improvement of processes, testing, and code architectureRequired QualificationsBachelor's degree in Computer Science, Computer Engineering, Systems Analysis and Development, or related fieldsExperience with Dagster, Airflow, or PrefectKnowledge of Python, SQLAlchemy, FastAPI or Flask, Pydantic, SQL, Data modeling, Git, Docker, Docker ComposeKnowledge of AI/ML and data-driven automationFluent English levelNice to HaveTimescaleDBAlembicPytestType hintsCI/CDKubernetes (deployments, services, ingress)Unit testingKnowledge of software architecture (patterns, repositories, services)About UsDelfos is doing more than predict failures it is scaling up operational knowledge.Delfos Energy is an energytech focused on predictive maintenance solutions and digital transformation to improve performance in renewable energy generation.#J-*****-Ljbffr


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