Senior Java Back-End Developer

03/11/2025

Our client is looking for a Senior Back-End Developer

Your Mission

As a Back-End Developer, you will be part of a development team, responsible for the development, maintenance & operations of critical notarial and public applications. You’ll be managing besides other things the IZIMI digital vault application, serving Belgian citizens, notaries & enterprises.

You will be building software that connects with authentic sources and other sensitive data & documents, which requires a high security attention and solid procedures.

What You Will Do

  • Architect and build robust, scalable back-end systems to support high-volume, critical digital processes;
  • Design and implement efficient, secure REST APIs and microservices in Java
  • Understand and implement complex business flows involving multiple stakeholders, API integrations and an efficient user experience through the existing (or future) UI’s.
  • Write and perform unit tests in order to maximize the quality of your deliverables and assure compliancy with the company Quality and Security standards;
  • Collaborate closely with back- and front-end developers, analysts, testers, and external dependencies to align technical solutions with operational realities
  • Optimize back-end performance to ensure reliability, data integrity, and legal compliance across systems;
  • Document the application code in order to ease its maintenance
  • Support the evolution of the platform with a user- and process-centric mindset

You have :

  • Master’s degree in Computer Science or equivalent experience
  • Min 7 years of experience as a Java back-end developer
  • Strong knowledge of Java, Spring framework, Spring boot
  • Experience with SQL (Microsoft SqlServer) ;
  • Nice to have: experience with React, and familiarity with public administration systems
  • Ability to analyze and model complex processes and workflows
  • Pragmatic, curious, solution-oriented, a real team player with excellent collaboration skills
  • Language: Fluent in Dutch or French, with a solid working knowledge of English

Why Join Us?

  • Contribute to high-impact legal infrastructure used nationwide
  • Work in a stable yet innovative sector with complex challenges
  • Join a team that values autonomy, continuous learning, and creative problem-solving
  • Location: Brussels, Central Station area
  • Work setup: Hybrid (40% on-site, 60% remote)

Job specifications

ID: 11519

Duration: 05/01/2026 - 31/12/2026

Location: Brussels

Type: Freelance

Viktor Feyt

IT Recruitment Consultant
This position is no longer accepting applications.