senior web developer

The PositionAs part of our ongoing growth, we are looking for a Senior Java Software Developer to join our teams and work on client projects located in Brussels. You will join our client’s application modernization initiative, focused on upgrading and modernizing a portfolio of existing Java applications running on legacy environments.As a Senior Java...

Join a global energy management team to develop backend services and data pipelines supporting renewable asset onboarding, market operations, and trading for wind, solar, and Storage systems.Key responsibilitiesDesign and implement Python backend services for asset onboarding, contract management, and market operationsDevelop APIs and data pipelines to...

Mission Overview:Keystone Solutions is seeking a Senior Fullstack Java Developer for a consultancy mission at a client site. The organization operates in a complex technological environment, combining a historical application landscape with modern components. This role involves participating in a structural transformation of the IT landscape, modernizing...

Our client is a leading supplier of software products in the field of eCustoms internationally.The company supplies software products and IT services to European Union Institutions and Agencies, international organisations and national government administrations.The company employs over 1100 engineers, IT experts and consultants (around 3% PhD, 41% MSc and...

Job Description A major player in the IT sector, we have continued to grow and evolve since our creation in 1993. With a dedicated team of nearly 1,400 employees spread across several sites in Wallonia and Brussels, NSI has followed an exceptional trajectory. Our company is at the forefront of the digital revolution, offering a complete range of IT services,...

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired bya collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizationsunlock the value of technology...

ROLE SUMMARY We are looking for a Senior Full-Stack Developer with strong expertise in Java/Spring Boot, Angular, enterprise authentication and authorization mechanisms, API development, cloud integration and secure application architecture. The expert will be responsible for piloting a web application platform publishing/hosting embedded Microsoft Power BI...

Als Senior Developer neem jij een voortrekkersrol op binnen het team. Je takenpakket varieert van het optimaliseren van bestaande applicaties tot het ontwikkelen van nieuwe oplossingen met behulp van de nieuwste technologieën en de mogelijkheden van AI. Daarbij ligt de focus sterk op schaalbaarheid, performantie en architecturale optimalisatie.Je bent...

Werken bij CM, is werken met goesting. Want bij CM heb je een positieve impact op het leven van miljoenen Belgen. Dat ervaren onze duizenden medewerkers elke dag. Samen dragen we bij aan een gezondere samenleving voor iedereen. Dat geeft voldoening en energie. Ook voor jou is CM een fijne en zorgzame werkomgeving, waar je ideeën uitwisselt en jezelf...

Mutualité chrétienne (MC) is seeking a Senior Outsystems Developer to join the Digital Services team in Belgium. You will contribute to CM's online self-service across multiple applications, collaborating in an Agile environment with a diverse team of developers, analysts, testers, and engineers. We value experience in OutSystems, mobile and REACT, English...

Everience is seeking a Senior Java Developer to strengthen the Risk Management team in Belgium. You will design and deliver high-quality software, mentor developers, and drive technical excellence within a 180-person B2B Belgium platform group. The role focuses on scalable Java applications and modern cloud deployments. As part of the Risk Management team,...

Bruxelles, Belgium | Posted on 02/05/2025 We are urgently looking for a Senior Java Developer for the European Institutions in Brussels, Belgium. A work permit is required for non-European candidates, but not provided! EU candidates are welcome to apply. Do you live in Brussels or are you willing to relocate to Brussels? A work permit is required. This...

Devoteam Creative Tech in Belgium is seeking a Senior Python Developer to design and develop robust, scalable web applications and back-end services. This AI Augmented role requires you to actively use AI tools in daily workflow — from AI-assisted coding to building AI-powered features and integrations. You will shape architectures, collaborate with...

All European Careers seeks a Senior Java Developer for the European Institutions in Brussels, Belgium. The role focuses on design, development and integration of information systems, with emphasis on Java, Spring and Hibernate technologies. The position is open for contractors and employees; English fluency is required. A work permit may be required for...

Bruxelles, Belgium | Posted on 08/20/2026 Region Europe Job Description Join our dynamic international team and embrace the adventure of working abroad! We're seeking enthusiastic and adaptable candidates, who are eager to expand their horizons and gain unparalleled experience in a diverse international environment. This opportunity is ideal for those...

All European Careers seeks a Senior Java Developer for the European Institutions in Brussels, Belgium. The role focuses on design, development and integration of information systems, with emphasis on Java, Spring and Hibernate technologies. The position is open for contractors and employees; English fluency is required. A work permit may be required for...

As a Senior Python Developer, you will be instrumental in architecting, developing, and maintaining resilient software solutions essential to Clients core business activities. You will work hand-in-hand with multidisciplinary teams to deliver reliable, high-performing applications while fostering the continuous enhancement of technical standards. Your main...

Job role: Senior Java Developer. Location: Brussels (On site). Languages required: English (C1) (Mandatory) . Minimum experience required: 14 years. Overview Senior Java Developer role based in Brussels with on-site work. English required at C1 level (mandatory). Minimum experience: 14 years. Responsibilities Software Development: Design and...

Bruxelles, Belgium | Posted on 02/05/2025 We are urgently looking for a Senior Java Developer for the European Institutions in Brussels, Belgium. A work permit is required for non-European candidates, but not provided! EU candidates are welcome to apply. Do you live in Brussels or are you willing to relocate to Brussels? A work permit is required. This...

Bruxelles, Belgium | Posted on 08/20/2026 Region Europe Job Description Join our dynamic international team and embrace the adventure of working abroad! We're seeking enthusiastic and adaptable candidates, who are eager to expand their horizons and gain unparalleled experience in a diverse international environment. This opportunity is ideal for those...