freelance full stack developer senior

adesso Belgium, who are we? We are an IT (start-up) provider working under the adesso umbrella with proven track record in different industries. The new Belgian entity of adesso is part of the expansion and growth strategy of the adesso group. With more than 10.000 employees spread over 60 locations we are entering an exciting period with our presence in...

Rate - Priced work - details given after application Our client is a primary supplier to several NATO frameworks. An exciting and impactful role has been released today for one of the organisations within NATO. Over the next week we will be reviewing profiles for submission on 12th May for review by NATO. Latest Start Date will be 1st June 2026. This role is...

Full Stack DevOps Engineer ?Location: Brussels, hybrid ? Contract type: until end of 2026, possible extension thereafter USP: Shape scalable Python and cloud architecture while building practical AI-powered automation for digital trade solutions. ? Your Role As Senior Full-Stack Developer & DevOps Engineer, you will develop and maintain applications and...

Full Stack DevOps EngineerLocation: Brussels, hybridContract type: until end of 2026, possible extension thereafterUSP: Shape scalable Python and cloud architecture while building practical AI-powered automation for digital trade solutions.Your RoleAs Senior Full-Stack Developer & DevOps Engineer, you will develop and maintain applications and services...

We are hiring a Full Stack Developer To apply, please send your CV and motivation letter to jobs@helionresearch.com About the Company Helion Research is a market research agency specialised in Mystery Shopping & Customer Experience Research, active in over 90 countries for multinational retailers, manufacturers and service providers. We are bringing more...

Rhox in Belgium seeks a Senior Fullstack Java Developer to modernise unemployment-regulation applications running on IBM WebSphere, with cloud or hybrid services. You will use Java, Spring Boot, and Angular or ReactJS to deliver maintainable integrations and features.You will turn technical specs into working solutions, assess options for maintainability,...

Ayesa Digital in Brussels is seeking a Senior Java Angular Full Stack Engineer to design, build, and evolve enterprise applications that support EU decision-making processes. You will work in a multicultural environment on high-impact projects involving legislative workflows and interinstitutional collaboration platforms.The role requires deep Java/Spring...

A leading tech company in Belgium is looking for a Senior Full-stack Developer proficient in Java and Angular to join their dynamic team. The role involves developing and maintaining business applications, with an emphasis on strong technical skills and a collaborative approach. Applicants should have a minimum of 7 years in Java and 5 years in Angular,...

Oliver James Associates Ltd. in Brussels is seeking a Senior Full-Stack Java/Angular Developer to help modernise critical legacy applications within a hybrid, long-term freelance engagement.You will participate in a multi-person team and contribute to both backend and frontend modernization efforts. The role requires strong Java and Angular expertise, plus...

The company in Antwerp is seeking a Senior Full-Stack AI Engineer on a CTO track to take technical ownership of OneView. You will work on retrieval (PostgreSQL/pgvector), LangGraph pipelines, a FastAPI backend, a React/TypeScript frontend, and CI/CD/observability in a small team with future CTO growth.We focus on AI-native workflows shipped to real users,...

Présentation Vous rejoignez une équipe de développement qui s'appuie sur des méthodes de travail innovantes et agiles, notamment Scrum, DevOps et CI/CD, afin de concevoir des solutions logicielles performantes, évolutives et maintenables. Tâches et responsabilités L'environnement de travail favorise la curiosité technologique, la collaboration et...

Een internationaal netwerk hebben is waardevol. Weten hoe je dat netwerk omzet in nieuwe projecten, toegang krijgt tot de juiste beslissingsnemers en ook buiten bestaande contacten nieuwe deuren opent, is wat in deze opdracht het verschil maakt.Deze Belgische engineering- en productieorganisatie ontwikkelt complexe maatwerkoplossingen voor de internationale...

Full Stack DevOps - 4 months - Belgium At RELYzIT, we don't recruit — we build. We unite exceptional builders: engineers, architects, creators, across the BENELUX and the GCC. Vetted through VECTOR7™'s multi-signal evaluation, you evaluate once and carry that credential forever. This is more than work. This is where builders build...

We're working with a leading financial organisation in Brussels, looking for a Senior Full-Stack Engineer to strengthen its growing engineering team. You will play a key role in improving the technical vision of a large-scale, business-critical platform used across the company. You are someone who feels equally at home architecting complex Java services as...

Abakus IT-Solutions in Belgium is seeking a Senior Java Full-Stack Developer to join a large-scale transformation program and strengthen an experienced development team. You will contribute to the development, modernization, refactoring and greenfield delivery of business applications, collaborating with technical leads, architects, analysts and...

Full Stack DevOps Engineer📍Location: Brussels, hybrid📄 Contract type: until end of 2026, possible extension thereafter❤️ USP: Shape scalable Python and cloud architecture while building practical AI-powered automation for digital trade solutions.🎯 Your RoleAs Senior Full-Stack Developer & DevOps Engineer, you will develop and maintain...

Abakus IT-Solutions in Belgium is seeking a Senior Java Full-Stack Developer to join a large-scale transformation program and strengthen an experienced development team. You will contribute to the development, modernization, refactoring and greenfield delivery of business applications, collaborating with technical leads, architects, analysts and...

Ontwikkelen en onderhouden van webapplicaties met onder andere .NET Core, C\\#, REST API's, Angular en AWS.Meedenken over technische architectuur, nieuwe functionaliteiten en de verdere verbetering van bestaande toepassingen.Software testen, integreren en documenteren met aandacht voor kwaliteit, beveiliging en schaalbaarheid.Samenwerken met developers en...

Que ferez‑vous?En tant que développeur full‑stack, vous participez à la construction de Bouwflow, la plateforme ERP la plus moderne de Belgique. Vous travaillez sur toute la stack : du backend Laravel au frontend Next.js avec Tailwind. Vous construisez des fonctionnalités de A à Z : base de données, backend, API et interface. Vous veillez à ce que...

Bij Xelor ga je als .NET Consultant op projectbasis aan de slag bij verschillende klanten. Zo krijg je de kans om steeds nieuwe omgevingen, technologieën en uitdagingen te ontdekken. Voor dit project zoeken we een ervaren Senior/Lead Fullstack .NET Developer die het development team versterkt en mee bouwt aan bedrijfsbrede softwareoplossingen. Dit kan zowel...