Mission Overview:

Keystone Solutions is seeking a Senior Java Developer for a consultancy mission at a client site. The ideal candidate will have a minimum of 7 years of experience and possess strong skills in Java, Gradle, SpringBoot, Spring, Hibernate, and GWT. Knowledge of DB2 and PostgreSQL is also required.

Responsibilities:

  • Adapt applications running on GlassFish 2/3/4 for migration to Payara5.

Requirements:

  • Minimum 7 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, particularly with Fedris, is a plus.

Why Join Keystone Solutions:

  • Consultancy Nature: Work on-site and embrace your consultant identity.
  • Dynamic Projects: Engage with diverse challenges across various client environments.
  • Turbo-Charged Learning: Experience professional development and broad learning opportunities.
  • Skyrocketing Ambition: Commit to your career growth within our framework.
  • Values: As a

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

    Duration: 06/07/2026 - 30/09/2026 3 months • (full time)

    Skills required:

    • DB2 - Level: Junior - Most recent: Any time
    • gradle 5.x - Level: Confirmed - Most recent: Any time
    • GWT 2.7 - Level: Confirmed - Most recent: Any time
    • Hibernate 5.5.X - Level: Confirmed - Most recent: Any time
    • java 8 - Level: Confirmed - Most recent: Any time
    • PostgreSQL - Level: Junior - Most recent: Any time
    • Spring 5.3.X - Level: Confirmed - Most recent: Any time
    • Spring Boot 2.7.X - Level: Confirmed - Most recent: Any time

    Language requirements:

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

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