HubMub
-
Keystone Solutions

Full-stack developer Java / Angular

Keystone Solutions
Belgium · Full-time · Mid-Senior
Mission Overview:

In the context of a major business transformation program, we are looking for a Senior Java Developer to reinforce the existing teams as a Keystone Solutions consultant on-site at our clients location. This position involves joining a dynamic department of approximately 70 people, working to ensure the hand-over, refactoring, and/or greenfield development of business applications.

The successful candidate will be responsible for the development of Java applications while supporting the analysts and aligning with business objectives. You will provide expertise in the full-stack software development lifecycle, from concept and design through to testing, as part of Keystone Solutions' consultancy model.

Key Responsibilities:

  • Development and maintenance of business applications
  • Development of application components/web services
  • Contribution to the design of architectural components and building blocks in close collaboration with technical leads or senior software architects
  • Participation in technical working groups, Scrum meetings, and meetings with users when needed
  • Assistance in testing, technical documentation, deployment, evaluation, and reporting (JUnit, JIRA)


Required Experiences:

  • Minimum 5-7 years of full-time professional Java Development experience is required (Full-stack preferred; backend with good affinity for frontend is acceptable)
  • Familiarity with multi-system integration and complex environments


Competencies:

  • Technical knowledge and practical experience of required technologies to initiate development and provide support directly, including:
  • 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) and backend abilities
  • Maven, Jenkins, Docker, OpenShift, SVN or GIT, and Eclipse or IntelliJ, Sonar, JBoss, Tomcat
  • Experience with relational databases and O/R mapping: PostgreSQL, SQL Server
  • Ability to read and understand BPMN, UML, and documentation practices
  • Jira/Confluence
  • Knowledge of the following technologies would be advantageous but not required: Talend, ZK, Oracle, Kafka
  • Familiarity with AGILE/SCRUM methodologies, test-driven development, and continuous integration
  • Problem solver, able to quickly understand existing code
  • Solution and customer-oriented
  • Ability to integrate easily into an existing team and to supervise juniors


Languages:

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


If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.

Key Skills

Ranked by relevance

java junit microservices postgresql angular jenkins docker oracle scrum git sql uml svn
Login to Apply
🇧🇪

Country Guide

Belgium

International hub for EU careers

Posted
Oct 01, 2025
Type
Full-time
Level
Mid-Senior
Location
Brussels
Company
Keystone Solutions

Industries

Information Technology & Services

Categories

Engineering Information Technology

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
Keystone Solutions
Related

Senior Java / Angular Developers (Expert)

2026-05-28

Full-time
Not Applicable
Belgium
Information Technology & Services
Engineering
View Job Details
Crenno
Related

Frontend Developer (CR-FRDE03)

2026-05-23

Full-time
Not Applicable
Turkey
Information Technology & Services
Engineering
View Job Details
D4 Insight
Related

Senior Solutions Architect

2026-05-26

Full-time
Not Applicable
United Arab Emirates
Information Technology & Services
Engineering