senior software developer

Senior PowerBuilder Developer Technical leadership and application modernisation Brussels * Hybrid * 3 days on site per week Contract options: permanent, fixed-term or freelance | Start: as soon as possible About the role Help shape the next chapter of a business-critical application . You will combine hands-on PowerBuilder development and production...

As a Senior Python Developer, you will be instrumental in architecting, developing, and maintaining resilient software solutions essential to the 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. You will join...

Bruxelles, Belgium | Posted on 02/23/2026 We are looking for a Senior iOS Developer to join a high-performing Mobile App Team responsible for delivering secure, stable and high-quality mobile applications. The role focuses on native iOS development within a mature Agile and SAFe environment, supporting continuous evolution of a large-scale mobile banking...

Work Model: Hybrid – 2 days onsite per week Work Regime: Full-time (100%) Expected Start Date: Mid-February, or mid-March at the latest About the Role Our client is looking for an experienced Senior .NET Developer with strong Blazor expertise to join existing development teams and contribute to ongoing projects. The successful candidate will be...

We are currently seeking an experienced Java Spring Developer with strong Angular expertise to join our growing team. This role is ideal for someone who is passionate about building scalable backend systems while also contributing to modern, responsive front-end applications. Key Responsibilities Design, develop, and maintain enterprise‑grade...

Senior Full-Stack Developer Location: Hybrid (East - Flanders)Employment Type: Full-Time About the Opportunity We're partnering with an ambitious, technology-driven organisation that is building a modern, scalable digital platform with significant growth plans. As the business continues to expand, we're seeking a Senior Full-Stack Developer to take...

In mei 2020 werd gestart met de ontwikkeling van de eerste webapplicatie voor de nichemarkt van diepfunderingen . Vandaag, bijna zes jaar later, waarvan vier jaar operationeel, kijkt CloudPiling trots terug op het afgelegde traject en de gerealiseerde groei. Ondertussen bouwden we sterke referenties op binnen de bouwindustrie en gingen we in sneltempo live...

Develop front-end features using modern frameworks (e.g. Angular) Implement responsive and accessible user interfaces based on UX/UI designs Integrate front-end components with APIs and back-end services Apply security best practices (input validation, authentication/authorisation, secure handling of data) Perform unit and integration testing; debug and...

Overview Expleo is a trusted partner for your innovation journey. As a global engineering, technology and consulting service provider, we are ideally positioned to help you achieve your ambitions and future-proof your business. With a smart blend of bold thinking and reliable execution, we’re able to fast-track innovation through each step of your value...

Employment type: Contract 12 months + extensions to be confirmed We are looking for an experienced Senior Guidewire Developer to support the delivery and modernisation of core insurance platforms in Belgium. You will combine hands‑on development with technical leadership, working closely with architects, business analysts and insurance stakeholders to...

Wat: Frequentie: Dagelijks Wekelijks This large Belgian company plays a key role and manages an extensive and technically complex network. Behind the scenes, high-performing and reliable IT systems ensure that operational processes run safely and efficiently. Within this business-critical environment, significant investments are being made in modern software...

About the Role We are looking for a Senior Python Developer to work on a mission-critical internal monitoring platform within the energy sector. The platform monitors application health through sophisticated synthetic and log checks and provides timely alerts when intervention is required. You will work within a multidisciplinary development community,...

We are urgently looking for an experienced Senior Java Developer to join an international organization in Brussels, Belgium. EU candidates are welcome to apply and must be willing to relocate to Brussels. Candidates must have the legal right to work in Belgium. Work permit sponsorship is not provided. Designing and developing Java components and reusable...

Position Summary We are looking for an experienced Senior Java Developer to join our team working on the Flemish Government account, based at the Atos office in Zaventem. You will design, build and maintain robust, secure and maintainable Java applications and services that support Flemish public-sector digital services. You will work in a...

Jouw Rol Als senior .NET Developer ben je eindverantwoordelijk voor het ontwerp, de ontwikkeling en het onderhoud van een of meerdere modules binnen ons zorginformatiesysteem HiX . Je werkt aan complexe en kritieke componenten die bijdragen aan een vlot functionerende IT-infrastructuur in ziekenhuizen en zorginstellingen. Je combineert technische expertise...

Voor een Europese netbeheerder in de energiesector zoeken we een senior .NET developer. Meewerken aan de technische migratie naar .NET 8, Blazor en REST Ondersteuning bij de installatie van .NET RT-applicaties Mee ontwikkelen aan een nieuw intern project Code schrijven volgens de standaarden van de klant, met oog voor kwaliteit Wat vragen we? ...

We are urgently looking for an experienced Senior Java Developer to join an international organization in Brussels, Belgium. EU candidates are welcome to apply and must be willing to relocate to Brussels. Candidates must have the legal right to work in Belgium. Work permit sponsorship is not provided. Designing and developing Java components and reusable...

Contribute to the major transformations of companies and public actors by combining technological innovation and business expertise, serving our society and customers to help them move forward sustainably. Your responsibilities for this function We are looking for a Senior Full-Stack Java Developer to join our client’s development team and take a key role...

To design, develop, and maintain enterprise-grade applications on IBM Mainframe systems using COBOL. The role focuses on delivering robust and efficient solutions within the banking domain, ensuring compliance with regulatory standards and supporting critical business operations. Key Responsibilities: Develop, maintain, and enhance COBOL-based applications...

h3Jouw verantwoordelijkheden /h3ulliDesign Architectuur: Je ontwerpt geavanceerde ECM-applicaties (met focus op high-performance search, document management en schaalbare enterprise platforms). /liliIntegraties Optimalisatie: Je zorgt voor naadloze integraties tussen enterprise systemen, ESB's en moderne SOAP/REST webservices. Daarnaast optimaliseer je...