Job position

Contractor
Permanent
As soon as possible
12 months
> 10 years experience
Hybrid
Brussels, Brussels-Capital, Belgium
Published on 03/12/2025

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Senior Dev Full Stack - 12 mois - Brussels

Our important client is currently looking for a Senior Dev Full Stack for a 12-month contract based in Brussels.

Context and description

In the context of a major business transformation programme, we are looking for a senior fullstack developer to reinforce the existing teams, with a propensity for freont-end tasks & insights.

As a senior developer you will join a department of about 70 people (in evolution) to ensure the hand-over, refactoring or greenfield development of new business applications.

The senior developer we're looking for will be responsible for Java / Angular application development, supporting analysts and business objectives while providing expertise in full software development lifecycle, from concept and design, to testing.

Responsibilities:

  • Development / Maintenance of business applications

  • Develop application components/webservices, design and develop angular components

  • Contribute in design of component architecture and building blocks (in close collaboration with technical lead or senior software architects)

  • Coach co-workers on a technical level when needed.

  • Participation in technical working groups, progress meetings and meetings with the users if needed

  • Assistance in the testing, the technical documentation, the deployment, the evaluation and the reporting (JUnit, JIRA)

Experiences

  • Minimum 10 years of full-time professional Java Development experience is required (Fullstack preferred - backend with good affinity for frontend is ok)

  • Familiarity with multi-system integration and complex environments.

  • Experience with coaching & reviews of peers / junior developers.

Competencies :

Technical knowledge and practical experience of required technologies to be able to start development and support directly (below) :

  • Java and Spring Framework

  • JPA (with Hibernate as implementation)

  • Security patterns (Spring security)

  • Soap and RESTful Web Services

  • Spring Batch

  • SOA, microservices, CQRS

  • Test driven development (Junit, Spring, CI, Mockito, Cypress, Selenium)

  • Frontend (HTML/CSS/JavaScript, Angular) & backend abilities

  • Maven, Jenkins, Docker, Openshift, SVN or GIT and Eclipse or IntelliJ, Sonar,JBoss, Tomcat...

  • Experience with relational database and O/R mapping, PostgreSQL, SQL Server, Oracle

  • Able to read and understand BPMN, UML & documentation practices

  • Jira/Confluence

  • Familiar with AGILE/SCRUM methodologies, test-driven development and continuous integration

  • Solution and customer oriented

  • Ability to integrate easily into an existing team and to supervise juniors

Mission & Working hours

  • We are based in Brussels

  • This will be an initial contract - The mission is long term and can be extended beyond 2025.

  • 5 days from Monday until Friday (7h48 per day). Homeworking is possible (3-4 days a week).

Languages

  • French or Dutch: active knowledge (understanding / speaking / writing technical documentation / reading) of one language.

  • English (written / team communication): active knowledge

If you are interested please send me your CV and I will contact you as soon as possible with further details.

Candidate profile

Skills

  • Agile / Scrum

  • Angular (avec expertise angular 20)

  • bootstrapt 5

  • CSS 3

  • GitHub

  • ionic

  • Java

  • JIRA/confluence

  • JPA

  • Microservices

  • Openshift

  • PostgreSQL

  • PWA

  • Security

  • sonarQube

  • Spring Batch

  • Spring Boot

Working environment

Context and description

In the context of a major business transformation programme, we are looking for a senior fullstack developer to reinforce the existing teams, with a propensity for freont-end tasks & insights.

As a senior developer you will join a department of about 70 people (in evolution) to ensure the hand-over, refactoring or greenfield development of new business applications.

The senior developer we're looking for will be responsible for Java / Angular application development, supporting analysts and business objectives while providing expertise in full software development lifecycle, from concept and design, to testing.

Issy-les-Moulineaux, Île-de-France
< 20 employees
IT services
HOLBORN accompagne ses clients dans la conception de leur stratégie et dans la mise en œuvre opérationnelle pour rendre leur entreprise plus performante. Nous accompagnons en France, au Moyen-Orient et en Afrique du Nord la stratégie de développement de nos clients dans les domaines du Conseil, de la Transformation Digitale et de la Cyber Sécurité. Nous offrons un portefeuille complet de services et de solutions accompagné d’un modèle de proximité conjugué à un réseau mondial de prestation de services. Les prestations proposées par HOLBORN se structurent autour de quatre grands pôles basés sur un cadre de références : 1. Conseil & Audit : Nous accompagnons nos clients dans la définition et le déploiement de leur stratégie IT en leur offrant une prestation de conseils complète. Du diagnostic de l’existant à la définition d’une vision stratégique, en passant par la gestion de leurs risques. 2. Digital & Data : Nous accompagnons les DSI dans leurs projets de transformation digitale dans un contexte de ruptures technologiques permanentes. 3. Cyber Risk & Strategy : Nous aidons nos clients à appréhender la cybersécurité au travers d’une meilleure stratégie et d’une meilleure adoption des nouvelles technologies. 4. Formation : Nos proposons des parcours sur-mesure alliant les impératifs métiers aux exigences modernes d’une formation : multimodale, mobile, centrée sur l’apprenant, sociale et expérientielle. Nous avons conçu un portefeuille de services de bout-en-bout couvrant l’ensemble des besoins de transformation de votre structure. Nos experts et nos consultants développent des offres performantes pour vous aider à vous adapter à un environnement de plus en plus complexe. Nous mettons à votre service notre passion pour l’innovation et notre sens de la technologie.

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Senior Dev Full Stack - 12 mois - Brussels

Holborn

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