Senior Java Developer

Atos; Brussel Hoofdstad; Presencial; EUR 70.000 - 100.000; Jornada completa

Descripción de la vacante

Atos in Zaventem is seeking a Senior Java Developer to join the Flemish Government account. You will design, build and maintain robust Java applications, APIs and microservices using Spring Boot while ensuring security, GDPR compliance and accessibility.

Fluent Dutch is required for daily customer/end-user communication, with English for international colleagues. You will collaborate in a multidisciplinary team, contribute to CI/CD pipelines, and coach junior developers in an Agile setting.

Formación

• 5+ years of professional Java development in enterprise environments.
• Fluent Dutch (written and spoken) required.
• Experience with Spring Boot and REST APIs.
• Ability to design, test and maintain secure, scalable back-end services.
• Familiarity with CI/CD, Docker and container orchestration.
• Knowledge of GDPR and government service requirements.

Responsabilidades

• Design, develop, test, and maintain Java back-end applications and REST APIs.
• Translate requirements into scalable technical solutions.
• Write clean, well-tested code with focus on unit/integration testing.
• Ensure security, privacy, and accessibility requirements for government services.
• Participate in CI/CD pipelines, release planning and documentation.
• Collaborate in an Agile team and support junior developers.

Conocimientos

Java

Spring ecosystem

REST APIs

Microservices architecture

SQL

JUnit & Mockito

CI/CD practices

Docker

Kubernetes / OpenShift

OAuth2 / OpenID Connect / SAML

OWASP security principles

Agile working

SonarQube

Dutch language

English proficiency

Herramientas

Git

Maven or Gradle

Jenkins / GitLab CI / Azure DevOps

Docker

Kubernetes / OpenShift

PostgreSQL / Oracle

Descripción del empleo

Position Summary

We are looking for an experienced Senior Java Developer to join our team working on the Flemish Government account, based at the Atos office in Zaventem.

You will design, build and maintain robust, secure and maintainable Java applications and services that support Flemish public-sector digital services. You will work in a multidisciplinary team alongside analysts, architects, testers, DevOps engineers and the customer's stakeholders, taking technical ownership of your work and helping to raise the quality bar of the team.

As Dutch is the working language with the customer and end users, fluent Dutch is a requirement for this role.

Key Tasks and Responsibilities

Development and Delivery

• Design, develop, test and maintain Java back-end applications, REST APIs and integrations using modern frameworks such as Spring Boot.
• Translate functional requirements and user stories into well-designed, scalable and maintainable technical solutions.
• Write clean, well-tested code, with a strong focus on unit, integration and automated testing.
• Analyse and resolve complex technical issues, including performance, security and production incidents.

Technical Leadership and Quality

• Contribute to technical design decisions, architecture discussions and the selection of tools and frameworks.
• Perform code reviews, promote coding standards and best practices, and share knowledge within the team.
• Coach and support junior and medior developers.
• Ensure solutions respect security, privacy (GDPR) and accessibility requirements applicable to government services.

DevOps and Operations

• Contribute to and improve CI/CD pipelines, build automation and deployment processes.
• Work with containerisation and cloud or on-premises platforms to deploy and run applications reliably.
• Support monitoring, logging and troubleshooting to keep applications stable, observable and supportable.
• Take part in release planning, technical documentation and handover to operations teams.
• Work in an Agile (Scrum/Kanban) team and take part in planning, refinement, daily stand-ups and retrospectives.
• Communicate clearly in Dutch with customer stakeholders, business analysts and end users, and in English with international colleagues where needed.
• Work closely with the customer to understand their needs, propose improvements and manage expectations.

Job Requirements

Technical Competencies and Experience

• 5+ years of professional experience in Java development in enterprise environments.
• Strong expertise in Java (11/17/21) and the Spring ecosystem (Spring Boot, Spring MVC, Spring Data, Spring Security).
• Solid experience designing and building REST APIs and microservices or service-oriented architectures.
• Good knowledge of relational databases and SQL (e.g. PostgreSQL, Oracle) and ORM frameworks such as JPA/Hibernate.
• Experience with automated testing (JUnit, Mockito, integration and end-to-end testing) and test-driven practices.
• Experience with Git, Maven or Gradle, and CI/CD tooling (e.g. Jenkins, GitLab CI, Azure DevOps).
• Working knowledge of Docker and container orchestration (Kubernetes or OpenShift).
• Good understanding of application security principles (e.g. OWASP), authentication and authorisation (OAuth2, OpenID Connect, SAML).
• Familiarity with Agile ways of working and with software quality tooling such as SonarQube.

Languages

• Dutch: fluent, written and spoken (required).
• English: good working knowledge, written and spoken.