Senior Flux Developer for Implementation of Specific Fluxes

MC Expert

Brussels, Belgiumhybridcontractsenior

We are looking for a Senior Flux Developer to join our BI team within the Directorate-General for Persons with Disabilities. The role involves developing specific fluxes for the TRIA application in an Agile environment, requiring extensive experience in social security systems and software development.

Description (English)

Overview

The Directorate-General for Persons with Disabilities (DG HAN) is a directorate within the Federal Public Service Social Security and contributes to an inclusive society. Their goal is to enhance the autonomy of persons with disabilities by assessing and compensating the impact of a disability on daily life through services. They support persons with disabilities by granting allowances and other rights, such as financial support, parking cards, and certificates for applying for benefits from other services. They also strive to make these rights accessible and fairly allocated to ensure everyone has the best experience in exercising them. Currently, approximately 600,000 people are recognized as having a disability, of which 240,000 receive an income replacement allowance and/or an integration allowance every month. 514,000 parking cards are in circulation. In 2024, 160,722 disability assessments were conducted.

In 2019, the Council of Ministers decided that the DG HAN could replace the existing back-office application (TETRA) with a new, modern application (TRIA). Transitioning to a new application is crucial as TETRA is outdated and uses technologies that are no longer supported. At the same time, DG HAN must continue to fulfill its mission to citizens.

The TRIA program is extensive and consists of various sub-projects. The TRIA program is further supported by other teams within the FOD SZ ICT and DG HAN.

Key Responsibilities

•Establish necessary contacts with the business and discuss the scope with them.

•Establish necessary contacts with the stakeholders of the fluxes (consumers, producers) and discuss the scope and planning with them.

•Convert requirements/architecture into technical designs and working software.

•Responsible for designing, building, testing, and maintaining software solutions regarding the Fluxes described below.

•Proven expert in the requested Fluxes with the KSZ and can develop them autonomously.

•Has necessary contacts at the KSZ for inquiries and knows where to obtain necessary documentation.

•Implements automated testing as part of the assignment.

•Specializes in writing code and implementing functionalities according to the requirements and specifications of the project.

•Can work independently and describes/aligns the requirements regarding the Fluxes and develops them in collaboration with DGHAN.

Fluxes to be developed and integrated into the existing TRIA application:

•HolidayAttestation

•Handiservice

•RepresentationService

•PrisonerStatusConsultation

Skills & Experience

Required Technical Knowledge:

•Bachelor's or master's degree in computer science, computer engineering, or a related field.

•More than 10 years of experience as an analyst.

•More than 15 years of experience within social security (KSZ).

•More than 15 years of experience in developing various versions of Fluxes.

•More than 10 years of experience as a developer.

•Java: +10 years.

•GIT (github, bitbucket, gitlab,...): 10 years.

•Jenkins: 5 years.

•JPA/hibernate: 5 years.

•Maven: 2 years.

•Openshift/Kubernetes: 5 years.

•Postgres (or equivalents): 5 years.

•REST: 10 years.

•Spring Boot: 5 years.

•OpenAPI: 2 years.

Assets:

•Docker.

•BPMN & CMMN.

•Domain Driven Design / Clean Code / TDD.

•Experience on a complex project (>3M €).

•Front-end: experience with Angular.

•OAuth2.

•Experience with the context of social security systems.

•Experience/knowledge of the existing TRIA Ambassador component.

•Knowledge of using Github Copilot.

Languages

•NL: reading, speaking, and writing

•FR: reading, speaking, and writing

•ENG: reading, speaking, and writing

Competitive

Job Info

Type

contract

Level

senior

Work

hybrid

Salary

Competitive

Posted

Jun 8, 2026

Start Date

Jul 15, 2026

Deadline

Jun 13, 2026

Tech Stack

JavaGITJenkinsJPAHibernateMavenOpenshiftKubernetesPostgresRESTSpring BootOpenAPI