We are looking for a Senior Python Developer to join our Brussels-based engineering team and play a key role in delivering pioneering, cross-functional technologies that sit at the intersection of business impact and technical excellence.
This role is designed for a seasoned, hands-on engineer who thrives in complex environments, enjoys shaping robust systems, and is motivated by mentoring others while collaborating closely with experienced technical leadership.
Python FastAPI – The Role
As a Senior Python Developer, you will be a cornerstone of our development team, contributing both deep technical expertise and leadership on a day-to-day basis.
You will:
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Design and implement scalable, maintainable, and high-performance Python services
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Build and evolve RESTful APIs and microservices using FastAPI
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Collaborate closely with cross-functional teams to deliver high-quality software
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Act as a technical reference for junior developers, providing guidance, code reviews, and mentorship
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Ensure high standards of code quality through testing, documentation, and best practices
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Work in alignment with your colleagues, contributing to architectural decisions and technical direction
Python FastAPI – Your profile
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6+ years of professional Python development experience
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Proven experience working in senior or lead-capacity roles
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Comfortable balancing hands-on development with technical guidance responsibilities
Technical Expertise
Required
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Python mastery
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Experience with FastAPI Framework, microservices and REST
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Knowledge of design patterns
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Testing – knowledge of frameworks for testing
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CI/CD experience
Nice to Have
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Knowledge of containers (Docker, K8S, …) is a plus
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Knowledge of automation tool is a plus
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Security focused programming
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Experience in cloud environments
Who You Are
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A natural mentor who enjoys helping junior developers grow while following clear technical leadership
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A strong analytical thinker and problem solver
Python FastAPI – The offer
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Work on innovative, cross-functional technologies with real-world impact
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Join a collaborative team and coach more junior profiles getting more proficient with coding practices.
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Enjoy a lot of flexibility (homeworking is the norm) allowing for excellent work life balance
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Be trusted to lead, build, and shape solutions that matter, giving hands on experience in leading juniors
If you are a senior engineer who wants to remain deeply technical while elevating those around you, we would like to hear from you. Shoot your CV and join a tantalising project.
