Senior Java Developer 

Start Date: ASAP
Workload: Full-time
Location: Brussel (minimum 2 days/week on-site)
Languages: Dutch, French, and English required
Deadline to apply: June 20th, 2025
 

Context

A Senior Java Developer is needed to support the development and enhancement of a digital self-service platform. You will join an Agile development team focused on implementing customer-facing features in a secure, scalable, and maintainable architecture. Your role will cover the full development lifecycle — from concept through delivery — in a high-quality, test-driven environment.

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Primary Responsibilities

• Design and develop Java-based applications according to functional and business requirements

• Analyze and translate business/functional analysis into sound technical solutions and architecture

• Collaborate closely with business and functional analysts to fully understand requirements

• Implement, test, and document solutions using Agile practices and test-driven development

• Maintain and enhance the online customer portal and related services

• Assess impact of requested changes and propose optimal technical solutions

• Support code quality and maintainability through consistent documentation and testing

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Secondary Responsibilities

• Write and maintain unit tests using JUnit and Mockito

• Document testing results and address bugs or inconsistencies

• Participate in code reviews and share best practices within the team

• Continuously improve development practices and participate in lessons learned

• Provide coaching and support to junior team members

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Technical Requirements

• Expert-level experience with:

  • Java (Spring Boot, Hibernate)

  • REST API development

  • Agile & Object-Oriented methodologies

  • Tools such as IntelliJ, Tomcat, JIRA, Git

  • Unit testing frameworks (JUnit, Mockito)

• Experience or willingness to work with Magnolia CMS

• Strong knowledge of Agile delivery principles and practices

Nice-to-haves:

• Jenkins CI/CD

• Swagger / OpenAPI

• Maven

• Dynatrace

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Non-Technical Skills

• Excellent communication, customer service, and interpersonal skills

• Ability to work independently and manage multiple priorities

• Strong analytical, problem-solving, and organizational skills

• Leadership experience and ability to mentor junior developers

• Able to follow structured change management and quality assurance processes

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Education & Experience

• Master’s Degree in Computer Science (or equivalent through experience)

• Minimum 5 years of experience in a similar role

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Language Requirements

• Fluent in Dutch and French

• English proficiency is mandatory