Fullstack Java developer

Job Title: Full stack Java developer Senior

Location: 1210 Sint-Joost-ten-Noode, Belgium

Duration: 10/06/2026 - 31/12/2026

Languages: English, Dutch, French

Mode: Hybrid

Job Descriptio

• nThe organization operates in a complex technological environment combining a historical application landscape and modern components. The context includes a structural transformation of the IT landscape, modernization of architectures, reduction of technical debt, adoption of the cloud and compliance with regulatory compliance, including NIS2
• .Existing applications cover critical areas such as unemployment regulation (toelaatbaarheid, payments, debt management, financial and accounting processing). Some of these systems are based on legacy technologies, while new cloud/hybrid architectures are emerging.

  The architect plays a key role in harmonizing, securing and making these architectures coherent

.

Main responsibiliti esAs a "programme

• r"Develop and/or adapt computer applications in order to provide high-performance and user-friendly work tools to end use

rsAs an "analyst - programme

• r"Analyze the technical specifications of an application in order to choose the best solution and execute this analysis (smaller projects) in order to allow users to perform their tasks efficiently and to ensure the optimal and controlled operation of the IT resourc

esAs a "specialis

• t"Perform technical analysis in the context of business project
• s.Advise on integrations, data models, performance and scalabilit
• y.Support the team in the adoption of architectural technologies and pattern
• s.Analyze and resolve complex technical problems in a highly interconnected environmen
• t.Ensure consistency between legacy and modern component

s.

Technical skills sou

• ghtProven experience (5–7+ years) in complex IT programmi
• ng.Expertise in modern Java (Spring, microservices, API-driven, event-drive
• n).Skills in containerization and orchestrators (OpenShif
• t).Advanced knowledge of relational databases (MySQL) and data modelli
• ng.Knowledge of integrations: messaging, REST/GraphQL, event-driv
• en.Knowledge of resilient architectures and high availabili
• ty.Understanding of security standards (NIS

2).

Behavioural Sk

• illsExcellent analytical and synthesis ski
• lls.Structured and educational communicat
• ion.Global vision and ability to keep an overv
• iew.Quality, autonomy and proactivity orientat
• ion.Ability to connect business needs and technical iss

ues.