Principal Software Engineer

Start Date: As soon as possible

End Date: 31/12/2026

Application Deadline: 26/03/2026

Location: Brussels-Hoofdstedelijk Gewest

Work Regime: Full-time, on-site (No remote option)

Responsibilities and Activities:

• Lead and strengthen the software engineering team.
• Design and implement software architecture and APIs.
• Manage and optimize distributed systems, ensuring consensus, transactionality, and atomic updates.
• Oversee legacy Java code bases, including Spring Boot, Hibernate, and Maven.
• Work with various database systems such as Postgres, MySQL, DB2, Mongo, and Redis.
• Utilize k8s, Docker, AWS, Azure, and pipelines for development and deployment.
• Collaborate cross-functionally with product, DevOps, and QA teams.
• Lead development teams and drive performance engineering.
• Conduct cybersecurity audits and ensure compliance.

Required Qualifications and Experience:

• Minimum 15 years of experience in software engineering.
• Master's degree in Computer Science or equivalent.
• Proficiency in Dutch, French, and English (ideally trilingual).
• Extensive experience with Linux and Python.
• Proven track record in leading development teams and cross-functional collaboration.
• Strong background in performance engineering and cybersecurity.

Desired Skills and Certifications:

• Expertise in API design and software architecture.
• Experience with distributed systems and legacy Java code bases.
• Familiarity with various database systems and cloud technologies.
• Strong leadership and team management skills.