> Markdown version of [/jobs/ext/3855193-desarrollador-a-python-senior-id96249](https://www.wearedevelopers.com/jobs/ext/3855193-desarrollador-a-python-senior-id96249). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Desarrollador/a Python Senior ID96249 - **Company:** NĂºmero De - **Location:** Spain - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Automation of Tests, Software Quality, Code Review, Databases, Continuous Integration, Data Structures, Relational Databases, Software Design Patterns, DevOps, Django Web Framework, Memory Management, Github, Python (Programming Language), PostgreSQL, MySQL, NoSQL, Object-Oriented Software Development, E2e Testing, SQL Databases, SQLAlchemy, Systems Integration, System Availability, Flask (Web Framework), Concurrency, Git, Fastapi, Pytest, Containerization, Git Flow, Low Latency, Front End Software Development, Functional Programming, Restful APIs, Software Version Control, Docker, Web Api, Microservices - **Published:** October 22, 2026 - **Apply:** https://www.adzuna.es/details/5935849834 ## About the Role If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!, 4+ years of professional backend software development experience using Python. - Deep understanding of Python core concepts (OOP, functional programming, memory management, async/concurrency, and data structures). - API & Microservices: Proven track record of building and deploying production-grade REST APIs and distributed microservices architectures. - Databases: Strong proficiency with relational databases (e.g., PostgreSQL) and ORM frameworks. - Testing: Commitment to writing unit, integration, and end-to-end tests using frameworks like Pytest. - Version Control: Advanced proficiency with Git and collaborative development workflows (Pull Requests, branching strategies, code reviews). - Upper-intermediate English level. NICE TO HAVES - CI/CD & DevOps Tools: Solid hands-on experience with Docker (writing optimized Dockerfiles and Docker Compose). - Highly desirable experience setting up and managing GitHub Actions workflows for automated testing and deployment. ## Description We are looking for a Senior Python Developer to design and build scalable microservices and REST APIs, working closely with Product, DevOps, and Frontend teams., Architecture & Development: Design, build, and maintain high-performance, scalable microservices and RESTful APIs using Python (e.g., FastAPI, Django, or Flask). - Code Quality & Technical Standards: Write clean, readable, maintainable, and well-tested code. Conduct peer code reviews and promote modern Python practices (type hinting, async processing, design patterns). - Containerization & CI/CD: Containerize applications using Docker and build/optimize automated CI/CD pipelines using GitHub Actions for seamless deployment. - Database Management: Design schema models, write optimized SQL queries, and work with ORMs (e.g., SQLAlchemy) alongside relational (PostgreSQL, MySQL) and NoSQL databases. - System Integration & Scalability: Integrate third-party APIs and services while ensuring low latency, high availability, and strong security standards. - Mentorship & Collaboration: Collaborate with frontend engineers, product managers, and DevOps teams; mentor junior and mid-level engineers to elevate the team's overall technical capability.