32 Emplois pour Développeur web - Brussels

Backend Developer (Java / Symfony Migration)

About Us

At MACS, we’ve built an in-house ERP system that powers the daily operations of several companies. From budget proposals to workforce planning and contract management, our platform helps streamline complex workflows that hundreds of people rely on every day.

Now, we’re entering an exciting new chapter: modernizing our backend by migrating from Symfony/PHP to a scalable, service-oriented architecture in Java Spring Boot. It’s a big challenge—and a great opportunity for you to help shape the future of a mission-critical system.

The Role

We’re looking for a Backend Developer who loves tackling technical challenges and driving meaningful change. You’ll play a key role in designing and building new services in Java Spring Boot while ensuring our existing Symfony backend continues to run smoothly during the migration.

This role is ideal for someone who thrives in an environment where stability, scalability, and innovation come together—and where your contributions directly impact real-world operations.

What You’ll Do

• Lead the migration of core backend services from Symfony/PHP to Java Spring Boot.
• Design and implement scalable, maintainable microservices.
• Collaborate with frontend and product teams to deliver end-to-end features.
• Ensure quality with robust testing (unit, integration, end-to-end).
• Contribute to system architecture and technical strategy.
• Support and extend the existing Symfony backend when needed.

What We’re Looking For

• 4+ years of backend development experience.
• Strong skills in Java (Spring Boot).
• Willingness to work with and learn PHP/Symfony during the migration.
• Experience with relational databases (PostgreSQL preferred).
• Familiarity with modern deployment practices (Docker, CI/CD, Git).
• Exposure to AWS or other cloud platforms is a strong plus.
• Passion for clean, maintainable, and well-tested code.

What We Offer

• A technically challenging project where you’ll make a real impact.
• Direct influence on architecture and decision-making.
• A collaborative, supportive team environment.
• Competitive salary and benefits package.
• Flexible work setup: remote, hybrid, or office-based.
• Opportunities for professional growth.
• A healthy work-life balance—we value focus and sustainability over crunch.

Why Join Us?

This isn’t just another backend role. It’s a chance to:

• Take ownership of a high-impact migration project.
• Work on a system that truly matters to businesses and their people.
• Grow with a team that values technical excellence and long-term thinking.

Fujitsu is looking for a Back End Developer to work on a project within the EU Institutions, in Brussels. ON-SITE (2 days per week)

Expertise:

• Back-end languages and frameworks such as Java, PHP, Spring boot and Hibernate
• The web development cycle and programming techniques and tools.
• Database technology such as Oracle, MongoDB
• Code versioning tools such as Git or SVN

Languages: English

Location: Brussels, Belgium

Contract: Freelance or Employee - YOU DECIDE

Job Title: Full Stack Developer

Job Type: Freelance

Location: Brussels, Belgium

Work regime: Hybrid

Keywords: Angular, HTML, Java, CSS, and CI/CD

What you'll do:

• Delivering assigned tasks within the delivery cycle of an application development project. Tasks may include installing new systems applications; updating applications; performing configuration and testing activities.
• You will be working under supervision from the Technical lead/Project Manager or a Senior Developer to accomplish assigned tasks. At the same time contribute a design for specific deliverables and assist in the development of technical solutions.
• Job duties will include design, development and testing.
• Help maintain a rigorous software build and testing framework for continuous building and testing the developed software and keep track of failed builds or build issues.
• Prepare software technical documentation based on functional documentation and specifications, taking into account any specified functional and technical requirements (JIRA/Confluence).
• You will be part of a fast growing and exciting division whose culture is entrepreneurial, professional, rooted in teamwork and innovation.
• You will participate as part of a team and maintain good relationships with team members and customers.

What you bring:

• A Bachelor’s or Master’s degree holder in applied computer sciences, applied informatics or a related field
• At least 4 years of professional working experience Java/JEE application full-stack development technologies and tools
• Strong experience with Angular for front-end development
• Experience with designing & developing of applications using Java/J2EE technologies and tools such as Java, JavaScript, Angular, Spring Boot, Bootstrap, IntelliJ, Maven, Git, Hibernate, XQuery, HTML & CSS, .
• Experience in developing cloud-native applications
• Experience with CI/CD tools and pipelines
• Experience in the creation of technical designs and in leading technical designers
• Understanding of event-driven architecture
• Proven track record of working in Agile development environments
• Language requirements: fluent in Dutch (oral and written) and English

A little about us:

Innova Solutions is a diverse and award-winning global technology services partner. We provide our clients with strategic technology, talent, and business transformation solutions, enabling them to be leaders in their field.

• Founded in 1998, headquartered in Atlanta (Duluth), Georgia.
• Employs over 50,000 professionals worldwide, with annual revenue approaching $3.0B.
• Delivers strategic technology and business transformation solutions globally.
• Operates through global delivery centers across North America, Asia, and Europe.
• Provides services for data center migration and workload development for cloud service providers.

Awardee of prestigious recognitions including:

• Women’s Choice Awards - Best Companies to Work for Women & Millennials, 2024
• Forbes, America’s Best Temporary Staffing and Best Professional Recruiting Firms, 2023
• American Best in Business, Globee Awards, Healthcare Vulnerability Technology Solutions, 2023
• Global Health & Pharma, Best Full Service Workforce Lifecycle Management Enterprise, 2023
• Received 3 SBU Leadership in Business Awards

Stevie International Business Awards, Denials Remediation Healthcare Technology Solutions, 2023

Mid/Senior Front-End Developer (Java / Angular)

Duration: 12 months

Rate: Flexible

About the Project

You will join the ROV team (Driver Training and Professional Competence) within the TMB department of the Flemish Government.

The ROV application:

• Sends successful exam results to the Federal Public Service Mobility, enabling candidates to obtain driving licences and/or professional competence qualifications.
• Integrates with other platforms such as Vlaams Handhavingsplatform and MijnBurgerProfiel.

Role & Responsibilities

• Full-stack Java/JEE development with a strong focus on Angular for front-end.
• Design, develop, and maintain applications using Java, Angular, Spring Boot, and related technologies.
• Build and maintain cloud-native solutions.
• Participate in technical design creation and lead technical designers when required.
• Work with event-driven architectures.
• Integrate with external systems and APIs.
• Ensure smooth deployment through CI/CD pipelines.

Technical Requirements

• 4+ years of professional experience in Java/JEE application development.
• Expert in Angular for front-end development.
• Skilled with:
• Java, JavaScript, Angular, Spring Boot, Bootstrap, IntelliJ, Maven, Git, Hibernate, XQuery, HTML, CSS
• Familiar with CI/CD tools and event-driven architectures.
• Experience in developing cloud-native applications.
• Strong technical design skills and leadership in technical decision-making.

Language Skills

• Fluent Dutch (required)
• Fluent English

Contract Details

• Start date: ASAP
• Location: Hybrid – remote + 1 day/week onsite (Mechelen and/or Brussels)
• Rate: Flexible
• Engagement: Contractor / freelance

We’re working with a fast-growing SaaS startup in Leuven with a big focus on data analytics. Their product helps companies unlock the full potential of their data, and their platform is already making waves in the market. As they look to expand for the next level, they're searching for a Full-Stack Engineer who’s hungry to build, ship, and grow with them.

This isn’t a cog-in-the-machine role. You’ll be trusted to shape features end-to-end, take ownership of big pieces of the product, and have a real say in how the platform is scaled. If you’re ambitious, love solving tough problems, and want a clear path towards becoming a Technical Lead, this could be your place.

Responsibilities

• Building new features and improving existing ones across a SaaS platform.
• Working hands-on with React (hooks, context API, state management, component libraries) on the front end.
• Designing and implementing RESTful and GraphQL APIs with Node.js.
• Writing clean, robust, and well-typed code with TypeScript.
• Working with databases (PostgreSQL is the go-to) and ensuring efficient queries for large data sets.
• Helping shape cloud-native architecture (AWS with Docker and Kubernetes).
• Owning your work from design → implementation → testing → deployment → monitoring.
• Collaborating with product, design, and data teams to turn ideas into reality.
• Sharing knowledge, mentoring others, and stepping up to technical leadership as they grow.

Your Profile

• Solid experience with React and TypeScript.
• Strong Node.js backend skills.
• Good understanding of SQL (PostgreSQL/MySQL) and ORMs (Prisma, TypeORM, or similar).
• Familiarity with DevOps basics is a plus.
• An eye for clean code, testing, and maintainability.
• Most importantly: you’re curious, proactive, and eager to grow into a technical leadership role.

Offer

• Be part of a startup journey — small team, big impact, zero corporate politics.
• A platform where your ideas actually shape the product.
• Clear growth path into a Tech Lead role as the team is scaled.
• Flexible hybrid working — based in Leuven but can offer remote options.
• Between €3.5-€6k dependent on experience and interview process.
• Full package including stock and mobility options.
• 12 ADV days.
• A fun, supportive team that’s passionate about building great tech and solving hard problems.

If you're interested apply directly or email a CV to !

Als Full Stack Developer bij Krëfel ben je verantwoordelijk voor het ontwikkelen en optimaliseren van onze IT platformen. Je werkt nauw samen met diverse teams om innovatieve oplossingen te creëren die bijdragen aan klanttevredenheid en de efficiëntie van onze interne processen.

Jouw verantwoordelijkheden :

• Ontwikkelen en onderhouden van zowel front-end als back-end applicaties met behulp van .NET framework, .NET Core en ASP.NET
• Onderhouden van VB6 applicaties
• Samenwerken met analisten en projectmanagers om gebruikersgerichte oplossingen te implementeren.
• Zorgen voor een hoge standaard van codekwaliteit en prestaties.
• Identificeren van technologische verbeteringen en bijdragen aan de technische strategie.

Jouw profiel:

• Minimaal 3 jaar ervaring als Full Stack Developer, bij voorkeur met .NET technologie.
• Grondige kennis van moderne webtechnologieën zoals HTML, CSS, JavaScript, en frameworks zoals Blazor of Angular.
• Ervaring met server-side .NET technologieën en het ontwikkelen van RESTful API's.
• Bekendheid met databasebeheer (SQL Server, NoSQL).
• Azure kennis
• Probleemoplossend vermogen en een proactieve houding.
• Uitstekende communicatievaardigheden in het Nederlands en Engels.

Wij bieden :

• De kans om je vaardigheden verder te ontwikkelen binnen een groeiende organisatie.
• Een marktconform loon.
• Extralegale voordelen zoals maaltijdcheques, ecocheques, eindejaarspremie, personeelsvoordelen, fietsvergoeding, .
• Een stimulerende werkomgeving met ruimte voor persoonlijke groei.
• Een functiewagen met laadkaart
• 6 ADV dagen op jaarbasis

Role: Front-End Developer

Stack: JavaScript, React, Vue

Location: Vilvoorde, flexible hybrid work

Renumeration: €3.500-€.000 + benefits

We’re working with a growing scale-up tech company based in Vilvoorde, building diverse SaaS solutions for a range of different industries, generally with a specific focus on aviation/mobility, government projects and large-scale MedTech companies.

Currently they're looking to expand their team with a Front-End Developer (experienced in Vue/React) who will have the choice of working on an internal product basis or instead has the option to work directly with the customer.

The role will entail some client-facing responsibilities, development of new features (on an internal or external basis) and also some management/lead responsibilities within the internal team.

Responsibilities

• Build responsive, performant, and accessible UIs using React, Vue, and modern JavaScript tools.
• Collaborate with designers, product owners, and back-end engineers to create smooth user experiences.
• Help shape front-end architecture and best practices.
• Develop new features on both an internal/external basis.
• Take on some lead responsibilities in the team such as mentoring juniors, conducting technical interviews or face-to-face client meetings
• Testing and code reviews.

Your Profile

• You’ve got solid experience in front-end development, especially with React and Vue.js.
• You either have senior/lead experience or are ready to step into a senior role.
• You write clean, maintainable code, and enjoy collaborating with others.
• You care about user experience just as much as the code behind it.
• You have a Bachelor's degree or higher in IT.
• You're happy commuting to Vilvoorde on a hybrid basis.
• You speak fluent English (Dutch a huge plus).

Offer

• Working across a diverse range of industries with international players and household names.
• A tight-knit team that values autonomy, growth, and experimentation.
• A flexible working structure that allows independence and freedom over how you control your future.
• Chance to work on your own project 1 day every 6 weeks within the office.
• Flexible hybrid and remote working options.
• Between €3.5 000 dependent on experience and interview process
• Full benefits package including company car or mobility budget.
• 12 ADV days.

Interested?

• Let’s talk. Send over your GitHub, portfolio, or just your CV – we’d love to hear from you.

• Delivering assigned tasks within the delivery cycle of an application development project. Tasks may include installing new systems applications; updating applications; performing configuration and testing activities.
• You will be working under supervision from the Technical lead/Project Manager or a Senior Developer to accomplish assigned tasks. At the same time contribute a design for specific deliverables and assist in the development of technical solutions.
• Job duties will include design, development and testing.
• Help maintain a rigorous software build and testing framework for continuous building and testing the developed software and keep track of failed builds or build issues.
• Prepare software technical documentation based on functional documentation and specifications, taking into account any specified functional and technical requirements (Jira/Confluence).
• You will be part of a fast growing and exciting division whose culture is entrepreneurial, professional, rooted in teamwork and innovation.
• You will participate as part of a team and maintain good relationships with team members and customers.

• A Bachelor's or Master's degree holder in applied computer sciences, applied informatics or a related field
• At least 4 years of professional working experience Java/JEE application Full-Stack development technologies and tools
• Strong experience with Angular for front-end development
• Experience with designing & developing of applications using Java/J2EE technologies and tools such as Java, JavaScript, Angular, Spring Boot, Bootstrap, IntelliJ, Maven, GIT, Hibernate, XQuery, HTML & CSS, .
• Experience in developing cloud-native applications
• Experience with CI/CD tools and pipelines
• Experience in the creation of technical designs and in leading technical designers
• Understanding of event-driven architecture
• Proven track record of working in Agile development environments
• Language requirements: fluent in Dutch (oral and written) and English

Pour le Digital Competence Center (DCC) de P&V, nous recherchons un·e développeur·euse Full Stack Java expérimenté·e prêt·e à faire la différence.

Vous êtes passionné·e par le développement Full Stack Java et avez un fort intérêt pour l'analyse, l'architecture et l'innovation ? Vous souhaitez évoluer dans un environnement où votre expertise technique et votre sens analytique ont un réel impact ? Explorer les architectures IT vous stimule ? Alors cette opportunité est faite pour vous !

Votre mission

En tant que Full Stack Java Developer, vous jouez un rôle clé entre le business et la technologie. Vous traduisez des besoins fonctionnels complexes en solutions techniques robustes, évolutives et bien intégrées. Vous participez activement à la conception, au développement et à l'implémentation d'applications innovantes basées sur notre stack Java.

Vous occupez une position de référence dans l'environnement de développement et vous veillez à la qualité, la stabilité et la conformité des solutions selon les standards établis. Vous accompagnez vos collègues, réalisez des contrôles qualité et assumez la responsabilité finale du travail livré.

Vous évoluez dans une équipe multidisciplinaire composée de développeurs, analystes et testeurs, et travaillez sur des projets ambitieux dans un environnement de travail stimulant et collaboratif. Vous avez l'espace pour prendre des initiatives, réfléchir aux choix architecturaux et influencer la direction technique de l'équipe.