For a client in Brussels, we are currently looking for a Senior Data Developer (Python).

Start date: 01/06/2026
End date: 31/12/2027 (19 months)

Work regime: Full-time (2 days onsite)

Languages: Dutch/French + English

Project Description

The FIRST 2.0 program is a major modernization initiative aimed at transforming a legacy monolithic application into a modern microservices architecture running on Kubernetes. The program follows an API-first and event-driven approach, progressively replacing the legacy platform.

This is a business transformation program that enables the development of new functionalities, improves agility, and accelerates the delivery of value to end users. By building a more flexible and scalable digital platform, the program supports better services, an enhanced user experience, and rapid adaptation to evolving business and regulatory requirements.

Responsibilities

• Design and develop high-performance data pipelines.
• Integrate and transform complex datasets.
• Work in modern microservices and cloud-oriented environments.
• Apply DevOps practices, CI/CD, and distributed architectures to ensure scalability and reliability of solutions.
• Collaborate effectively with multidisciplinary teams.

Required Qualifications

• Minimum 10 years of experience as a Data Developer.
• Experience in the following areas:
  • REST APIs
  • Atlassian Suite
  • CI/CD
  • DB2
  • DevOps
  • ELK tools
  • ETL frameworks
  • Agile Scrum
  • Git
  • IntelliJ
  • JSON
  • Kubernetes
  • Linux
  • Python
  • Spring Boot
  • SQL
  • UML
  • Visual Studio Code

We are looking for a profile with strong technical expertise and an excellent understanding of data-related challenges, capable of ensuring data quality, consistency, and optimal data usage.