Junior Front End Developer

Keystone Solutions; Brussel Hoofdstad; Hybride; EUR 42 000 - 54 000; Plein temps

Résumé du poste

Keystone Solutions is seeking a Junior Front-End Developer for a consultancy mission at a client site. The main task is migrating Angular from V15 to V22, with regression testing and thorough documentation of changes to manage regression risk.

The role involves working with Java and Spring on the backend in a government environment, in a hybrid setup with possible on-site presence. Duration is four months, starting ASAP.

Qualifications

• Minimum 3 years of professional Java software development.
• Experience in complex multi-system environments.
• Migrating Angular applications to newer versions and performing regression testing.
• Strong documentation of changes to manage regression risk and inform users.

Responsabilités

• Perform the Angular migration to target version.
• Conduct testing including regression tests.
• Document changes and communicate with key users.

Connaissances

Team player

Analytical thinking

Problem solving

Autonomous

Communication

Customer focus

Outils

Angular

Java

Spring Framework

JPA/Hibernate

REST

OpenAPI/Swagger

SOA

CQRS

JUnit

Mockito

Spring Test

Cypress

Maven

Docker

OpenShift

Kubernetes

Git

GitLab CI/CD

SonarQube

NPM

OAuth 2.0

Jira

Confluence

Agile/Scrum

CI/CD

JUnit/Test Frameworks

Description du poste

Mission Overview:

Keystone Solutions is seeking a Junior Front-End Developer for a consultancy mission at a client site. The client maintains several applications developed in Java and Angular for a governmental organization. The current Angular version (V.15) needs to be urgently migrated to a more recent version (target V.22). The developer will be responsible for ensuring this technical migration, as well as the associated regression testing, which will be developed during the migration based on the modifications made to each application. Special attention will be given to documenting these changes to effectively manage the regression risk following this migration, along with communication to the relevant key users.

Responsibilities:

• Perform the migration
• Conduct testing, including regression testing
• Document changes

Experience:

Minimum 3 years of professional experience in Java software development. Experience working in complex multi-system environments.

Competencies:

Technical knowledge and practical experience of the following technologies:

• Angular 22
• Java >= 21 and Spring Framework (Core, JDBC, Data, Security, AOP)
• JPA / Hibernate
• RESTful Web Services
• OpenAPI / Swagger
• SOA, Backend-for-Frontend, CQRS
• Test-driven development (JUnit, Mockito, Spring Test, Cypress)
• Maven
• Docker
• OpenShift / Kubernetes
• Git and GitLab CI/CD
• SonarQube
• NPM
• OAuth 2.0
• Jira and Confluence
• Agile/Scrum methodologies
• Continuous Integration and Continuous Delivery (CI/CD)

Soft Skills:

• Strong analytical and problem-solving skills.
• Ability to quickly understand and maintain existing codebases.
• Customer and solution-oriented mindset.
• Team player with strong communication skills.
• Autonomous, proactive, and quality-focused.

Mission & Working Conditions:

The mission is carried out within a hybrid working environment. Regular presence on site may be required.

Why Join Keystone Solutions:

As a consultant at Keystone Solutions, you will engage in dynamic projects that offer a variety of challenges across different client environments. You will benefit from turbo-charged learning opportunities that enhance your professional development and broaden your skill set. We are committed to your career growth within our framework, and being a 'K-Stone' means bringing our core values to every engagement.

Duration:

As soon as possible - 31/12/2026 4 months (full time)

Skills required:

• Agile / Scrum - Level: Junior - Most recent: Any time
• Angluar 17 - Level: Junior - Most recent: Any time
• Angular 22 - Level: Junior - Most recent: Any time
• Docker - Level: Junior - Most recent: Any time
• Java 11 + 17 - Level: Junior - Most recent: Any time
• JMS - Level: Junior - Most recent: Any time
• JPA - Level: Junior - Most recent: Any time
• Oracle - Level: Junior - Most recent: Any time
• REST - Level: Junior - Most recent: Any time
• Spring - Level: Junior - Most recent: Any time
• Springboot 2.x + springboot3 - Level: Junior - Most recent: Any time
• SQL - Level: Junior - Most recent: Any time
• test metghodologiën - Level: Junior - Most recent: Any time
• Weblogic - Level: Junior - Most recent: Any time

Language requirements:

French
Level Native