Senior Python Backend Engineer – Django, Flask & FastAPI – Hybrid Brussels

We are looking for a Senior Python Backend Engineer for a International institution in Brussels, Belgium , with strong experience in Python, Django, Flask or FastAPI, REST APIs and database development .

You will contribute to the development of secure, scalable backend applications, working with modern Python frameworks, databases, containerized environments and DevSecOps practices within an international IT environment.

Hybrid Brussels – 5 days onsite per month – Europe-based candidates within 2 hours of Brussels – Contractor – Fluent English

A work permit is required but not provided.

Tasks and Responsibilities

• Develop and maintain backend applications and services using Python and frameworks such as Django, Flask or FastAPI ;
• Design, implement and integrate RESTful APIs and backend services;
• Develop and optimize database schemas, ORM models and SQL queries across relational and NoSQL databases;
• Apply secure coding practices, authentication, authorization, encryption and vulnerability scanning;
• Support automated testing, code quality and CI/CD processes using modern development and DevSecOps tools;

Profile

• Bachelor's or Master's degree;
• 6+ years of professional Python development experience ;
• Strong experience with Django, Flask or FastAPI and RESTful API development;
• Experience with relational databases such as Oracle or PostgreSQL and NoSQL technologies such as Elasticsearch or MongoDB;
• Excellent knowledge of ORM, database schema design and query optimization ;
• Experience with Docker or Podman, Kubernetes and Linux environments ;
• Knowledge of secure coding, OWASP-related vulnerability scanning, authentication, authorization and encryption ;
• Experience with Git or SVN , code quality tools such as pylint, Black or flake8, and AI coding assistants such as GitHub Copilot or Amazon Kiro;
• Experience with CI/CD tools such as Jenkins, GitLab CI or GitHub Actions, and familiarity with Ansible and virtual machine management;
• Fluent English , with availability to work onsite in Brussels 5 days per month.

Key Technologies & Skills

Python, Backend Development, Django, Flask, FastAPI, REST APIs, PostgreSQL, Oracle, MongoDB, Elasticsearch, ORM, Docker, Kubernetes, Linux, DevSecOps, CI/CD