Fullstack Developer

Mission Overview:

Keystone Solutions is seeking experienced Fullstack Developers (Angular/Spring) for a consultancy mission at a client site. In this role, you will support the development of business applications and the modernization of existing application portfolios, with a strong focus on enhancing security, maintainability, performance, and technical sustainability.

Key Responsibilities:

• Support the team based on needs and planning, working closely with existing development teams.
• Engage in various projects involving different applications and processes.
• Modernize or rewrite existing functionalities and develop new features as required.
• Contribute to the modernization of the HR data management platform (Persys/Syspers), ensuring it evolves into a reference architecture for HR data used by applications.
• Focus on modernizing data models, integration flows, and the gradual migration of existing applications while ensuring data security, quality, and consistency.
• Develop new applications systematically using Angular (17+) and Spring Boot, while also working with legacy technologies (Java EE, JSF, Access, manual processes).

Requirements:

• Minimum 5+ years of experience in Angular (9+).
• Minimum 5+ years of experience in Spring (Boot).

As a consultant at Keystone Solutions, you will experience dynamic projects across various client environments, turbo-charged learning opportunities, and a commitment to career growth. 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: 15/10/2026 - 05/05/2027 7 months • (full time)

Skills required:

• .Net - Level: Confirmed - Most recent: Any time
• Angular - Level: Confirmed - Most recent: Any time
• CSS - Level: Confirmed - Most recent: Any time
• HTML - Level: Confirmed - Most recent: Any time
• Java - Level: Confirmed - Most recent: Any time
• Javascript - Level: Confirmed - Most recent: Any time
• REST - Level: Confirmed - Most recent: Any time
• Spring - Level: Confirmed - Most recent: Any time
• SQL - Level: Confirmed - Most recent: Any time

Language requirements:

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