Junior Java Developer

Mission Overview:

Keystone Solutions is seeking two Junior Java Developers for a consultancy mission at a client site. The ideal candidates will have 3+ years of experience and possess skills in Java, Gradle, SpringBoot, Spring, Hibernate, and GWT. Knowledge of DB2 and PostgreSQL is also required.

Responsibilities:

As a consultant, you will be responsible for adapting applications running on GlassFish 2/3/4 with the goal of migrating them to Payara5. This role will provide you with the opportunity to work on dynamic projects, facing diverse challenges across various client environments.

Requirements:

• 3+ years of experience in Java development.
• Proficiency in Gradle, SpringBoot, Spring, Hibernate, and GWT.
• Good knowledge of DB2 and PostgreSQL.
• Experience in social security systems is a plus.

Why Join Keystone Solutions:

At Keystone Solutions, being a

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

Duration: 28/09/2026 - 31/12/2026 4 months • (full time)

Skills required:

• DB2 - Level: Junior - Most recent: Any time
• gradle 5.x - Level: Junior - Most recent: Any time
• GWT 2.7 - Level: Junior - Most recent: Any time
• Hibernate 5.5.X - Level: Junior - Most recent: Any time
• Java 8 and a view on Java 11 - Level: Junior - Most recent: Any time
• PostgreSQL - Level: Junior - Most recent: Any time
• Spring 5.3.X - Level: Junior - Most recent: Any time
• Spring Boot 2.7.X - Level: Junior - Most recent: Any time

Language requirements:

Dutch
Level Passive knowledge
English
Level Passive knowledge
French
Level Active knowledge