Senior Java Full-stack Developer

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 Brussels, the capital of Europe.

As part of our expansion plan in the software engineering division, we are looking for senior java developers!

Your role

In this consultant role, you will combine strategy with execution. You are both a visionary and a doer: from architecture and code reviews to implementation and deployment.

• You translate requirements and architecture into technical designs and working software.

• You are responsible for designing, building, testing, and maintaining full-stack software solutions.

• You implement automated tests as a standard part of every development effort.

• You build robust backend components in Java and Spring Boot, and develop corresponding front-end components in Angular, react or vue.

• You introduce new ideas and best practices and use state-of-the-art technology

• You set up REST APIs according to OpenAPI specifications and ensure stable integration with other systems.

• You work with modern CI/CD pipelines (Jenkins, Docker, Kubernetes/OpenShift) and safeguard code quality through test automation.

• You work independently alongside functional analysts who provide the requirements, alongside developers, architects and designers within an Agile scrum team.

• You continuously align your work with the team and communicate progress and technical choices in a transparent, structured way.

• You present your solutions to customers and stakeholders, process feedback, and defend well-founded technical choices.

• You don't code alone: AI is your daily pair-programming partner, and you know how to wield tools like GitHub Copilot to write cleaner code faster, catch bugs before they hatch, and spend your brainpower on the architecture decisions that actually need a human.

Required Skills & Knowledge:

Java (5+ years) / Kotling - Spring Boot - JPA/Hibernate - REST - OpenAPI - Git - Jenkins - Maven - Docker - Kubernetes/OpenShift - Postgres - Message Broker (e.g. ActiveMQ) - Angular, among others

Your profile

• You hold a bachelor's or master's degree in computer science, engineering, or equivalent through experience.

• You have at least 5 years of professional experience as a Java developer.

• You have a strong passion for building high-quality digital solutions and the ability to convince both customers and colleagues.

• You are flexible, work in a structured way, and can quickly adapt and integrate within an Agile team.

• You have knowledge of modern software architectures (microservices, event-driven, cloud-native).

• You have strong, demonstrable experience with Spring Boot, JPA/Hibernate, Jenkins, Maven, Docker, Kubernetes/OpenShift, Postgres, and message brokers.

• If you've ever tamed a stream of Kafka topics without losing a single message (or your sanity), we want to hear about it — Kafka experience is a big plus.

• Experience with a complex project, Domain Driven Design/Clean Code/TDD, BPMN & CMMN, OAuth2, or GitHub Copilot is a strong asset

• Bonus points if Apache Camel feels like second nature to you — routing messages between systems without breaking a sweat is exactly the kind of integration wizardry we're after.

• Proficiency with CI/CD, version control (Git), test automation, and monitoring too

• You can communicate fluently in French or Dutch (active proficiency), and in English.

Why join adesso Belgium?

• Meaningful work and projects: work within your domain of expertise where you can create value for customers and grow together with the company

• Strategic opinion: your opinion and contribution to the expansion of the company is very valuable and counts! You can give the company direction bringing in your ideas, creativity and vision for future growth!

• GrowTogether: with over 400 training courses and our digital learning platform, we support your continuous development.

• Knowledge sharing & building communities: you will build a knowledge center and software engineering community – our plan is to build an adessi community of 70 co-workers in December 2027!

• Work-Life Balance & Flexibility: Enjoy hybrid working options and a dynamic work environment: we are located nearby the Brussels North Train Station in ‘Gare Maritime - Tour & Taxi’ where with a lot of different facilities are present: food corner, gym, padel courts, …. there is even a skate park :)

• Comprehensive Benefits: Competitive salary, company car with mobility budget, charging card, net allowance, meal vouchers, insurances and 32 days of annual leave.

• Global Reach with Local Expertise: you will be part of a small agile company where our culture code will drive us to success. As part of an international company we are supported in different domains with expertise and top notch reference cases!

More info about Adesso-group & Press release