? Key Responsibilities Working in collaboration with other developers, Product Owners, and DevOps, your responsibilities will include: Developing and maintaining high\-performance REST APIs using FastAPI. Designing and implementing robust and secure microservices. Integrating and optimizing databases (PostgreSQL, MongoDB, etc.). Writing unit and integration tests to ensure code quality. Participating in code reviews and the continuous improvement of best practices. Contributing to technical documentation and tracking User Stories. Collaborating with the product and QA teams to ensure reliable delivery. ?? Tech Stack \& Environment **Language:** Python 3\.x **Framework:** FastAPI **Databases:** PostgreSQL, MongoDB, Redis **CI/CD:** GitLab CI/CD, Docker, Kubernetes **Testing:** Pytest, coverage **Cloud:** AWS / GCP (depending on the project) **Tools:** Git, Jira, Confluence ? Location \& Conditions Full remote possible from Europe (France time zone ±1h). Hybrid option available in Paris. **Contract:** Freelance **Start Date:** ASAP **Profil candidat:** ? Requirements Minimum 3 \- 5 years of experience in Python backend development. Solid experience with FastAPI (or experience with Flask/Django with a willingness to upskill quickly). Strong command of relational and NoSQL databases. Experience designing scalable and secure APIs. DevOps mindset appreciated (Docker, Kubernetes, CI/CD). Good level of technical English (written and spoken). ? Bonus (Nice to have) Knowledge of SOLID principles and Clean Code. Experience with DDD (Domain\-Driven Design) or Event\-Driven Architecture. Experience working in Agile/Scrum environments.