backend

Elia Group is seeking a Full Stack Developer to migrate an in-house platform to SitecoreAI and enhance security, performance, and observability. You will collaborate with architects, DevOps, and IT security to implement best practices in a large-scale digital workplace.Required: Python/FastAPI backend and React/NextJS frontend with NodeJS/NestJS experience;...

Expleo in Brussels is seeking a skilled backend and frontend developer to participate in the migration of an existing platform to SitecoreAI. The ideal candidate should have strong development experience in Python and React, along with collaborative skills and fluency in English and either French or Dutch.A competitive salary and comprehensive benefits,...

Jobtailor in Belgium is seeking a seasoned software engineer to maintain and evolve Compass Corporate components for task and process management. You will implement enhancements, optimize performance and support legacy systems while adding new features across frontend and backend.You will design, build, and secure RESTful APIs, work with OpenID Connect/JWT,...

itenium is seeking a freelance .NET Developer in Antwerp, Belgium. You'll be responsible for building and evolving backend services and APIs with .NET and ASP.NET Core, while also developing modern UI features. We require at least 5 years of experience in .NET Core and strong knowledge of Entity Framework and SQL. Fluency in Dutch and comfort in English are...

Infrabel recherche un stagiaire développeur en .NET & Angular/Blazor pour rejoindre l’équipe ICT, au bureau ICT.232 Business Support Solutions à Bruxelles. Vous participerez au développement backend et frontend, aux tests et à la documentation d'une application transversale.Le stage dure 3 à 4 mois et peut commencer dès février 2027; télétravail...

Pour le compte d’une ESN, dont le client est la société gestionnaire des réseaux ferrés belges, je recherche : Un(e) Ingénieur(e) SAP Fullstack Software Au sein de la l’équipe ouvrant ABAP OO, UI5, PI/PO, Fiori et Webdynpro, vous apporterez votre expertise UI5 et S/4HANA. MISSIONS PRINCIPALES • Développer les interfaces UI5 et Fiori ainsi...

Vlaanderen connect. zoekt een Full Stack Java ontwikkelaar die performante en toekomstgerichte softwareoplossingen bouwt voor de onderwijsadministratie.Je backend-ervaring in Java combineert met frontend skills om gebruiksvriendelijke en schaalbare applicaties te realiseren. Je werkt in een agile team, doorloopt het volledige ontwikkelproces van analyse tot...

Wij ontwikkelen applicaties op maat: van complexe webshops en CRM-systemen tot workflow-automatisatie en interne tools. Hoewel dit vaak backend-gedreven systemen zijn, spelen ze zich vandaag steeds meer af op gebruikersniveau in de front-end.In deze functie ontwikkel je deze applicaties van A tot Z. Je denkt actief mee met de klant, vertaalt noden naar...

Astek Belgium is seeking a Senior Testing Coordinator to lead cross-team testing in a complex digital transformation for industrial IoT. You will shape testing strategy, manage data, and ensure end-to-end coverage across backend, web, and mobile platforms.The role requires hands-on testing leadership, strong collaboration with Product Owners and Tech Leads,...

A pioneering advisory services firm in Belgium seeks a skilled software engineer to design and build AI-first software solutions. You will lead technical architecture decisions and collaborate with talented professionals in a fast-paced environment. To succeed, you should have over 5 years of experience in backend or full-stack development, proficiency in...

A prominent tech company in Brussels is looking for a Senior Fullstack Developer with over 14 years of professional experience. The candidate should be proficient in Java, Quarkus, and have strong expertise in both frontend and backend technologies including React and MongoDB. Responsibilities include designing high-performance applications, optimizing...

Darwin Recruitment seeks a Senior Full Stack Shopify Hydrogen Developer for a 6-month freelance engagement. This role is fully remote, serving a cosmetics group with a B2C storefront near go-live and a straightforward B2B store.You will work across the full stack: Shopify backend, Storefront API, GraphQL, and integrations with Microsoft Dynamics/Navision,...

Over de organisatieBen jij klaar met de logge beslissingsprocessen van een grote corporate, maar wil je wél de stabiliteit en slagkracht van een internationale speler? Voor een financieel ijzersterk familiebedrijf in de brede regio Antwerpen-Zuid zijn wij exclusief op zoek naar hun allereerste interne Full-Stack .NET Developer.Je komt terecht in een warme,...

Senior .NET Developer (Aftermarket Applications)Bachelor's degree in Computer Science or related field preferred.LanguagesRequired SkillsNice to haveApache Kafka Graph databases CI/CD with Azure DevOpsSoft SkillsProblem-solving Team collaboration Analytical thinkingAboutThe PositionAs a Senior Backend .NET Developer, you will be part of our internal team...

Python Developer - NL/FR Location: Brussels, Belgium Work Model: Hybrid – minimum 2 days per week on-site Work Regime: Full-time Start Date: 2 November 2026 End Date: 31 December 2027 Extension: Possible Languages • Dutch and/or French: Professional knowledge • English: Professional proficiency • German: Good Knowledge (an asset) Role Overview We...

Wij zijn op zoek naar een QA Architect die mee wil bouwen aan de voortdurende verbetering van de kwaliteit, betrouwbaarheid en schaalbaarheid van het Synaps-platform . Je definieert teststrategieën, verbetert testautomatisering en valideert releases samen met softwareontwikkelaars, DevOps-engineers, product owners en support engineers. De functie bestrijkt...

Java Full Stack Developer – Brussels, BelgiumLocation:Brussels, Belgium (Hybrid)Role Overview: We are looking for a skilledJava Full Stack Developerto design, develop, and maintain scalable enterprise applications. The ideal candidate will have strong expertise in Java backend development, modern frontend technologies, cloud platforms, and Agile delivery...

Job title: AI Platform DeveloperLocation: Brussels - 1 Day Per weekEngagement: FreelanceDuration: Until 31 December 2027 (extension possible)About the roleOur client is expanding their online self-service platform with a Virtual Assistant. Working in an Agile team alongside architects you'll design and build the MCP layer that safely connects LLMs to the...

We're working with a small, scaling telecommunications company based in Mechelen is looking for a skilled Java Engineer to join its growing technology team. The organisation delivers modern connectivity and digital solutions to customers across Belgium and continues to invest heavily in modern software engineering practices and cloud-native technologies.You...

Mission freelance à temps plein - 3 mois, renouvelable - Gembloux Pour renforcer nos équipes, nous recherchons un·e Testeur·se QA Médior freelance pour rejoindre une équipe produit travaillant sur une application web et mobile en développement actif. Vous travaillerez au sein de nos équipes, depuis nos bureaux de Gembloux, en collaboration...