Web Developer and Web Service API Consultant

Mission Overview:

Keystone Solutions is seeking a Web Developer and Web Service API Consultant to join a dynamic team at a client site. This consultancy mission focuses on innovative and agile processes (Scrum, DevOps, CI/CD) to design high-performance and scalable software solutions.

Project Details:

The project aims to reduce dependency on mainframe systems by migrating BNG, BCE (KBO), and other police data to a modern open architecture. This migration will enhance data accessibility for applications such as PoliceSearch, analytics solutions, artificial intelligence (AI), and Intelligence-Led Policing (ILP).

Key Responsibilities:

• Participate in the development and evolution of applications, APIs, and web services as part of the DECOM program.
• Conduct technical analysis, design, and develop data exchange services and REST APIs for integrating various police applications.
• Adapt and enrich strategic solutions such as PoliceSearch and PolLogs, integrating new features related to data analysis, AI, and ILP.
• Develop application components using PHP and JavaScript, contribute to defining the technical architecture, and collaborate with development teams to ensure high-performance, secure, and interoperable solutions that meet operational needs.

Soft Skills:

• Attention to detail and rigor
• Problem-solving abilities
• Autonomy
• Self-learning
• Quality orientation

Language Skills:

Fluency in French or Dutch is required, with a passive knowledge of the other language.

Why Join Keystone Solutions:

As a consultant at Keystone Solutions, you will work on-site, tackling diverse challenges across various client environments. This role offers turbo-charged learning opportunities and a commitment to your career growth within our framework. 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: 01/11/2026 - 31/12/2026 2 months • (full time)

Skills required:

• API, Webservices REST - Level: Confirmed - Most recent: Any time
• Architecture logicielle - Level: Confirmed - Most recent: Any time
• Authentication (OAuth 2.0, OpenID Connect, JWT-Based Tokens - Level: Confirmed - Most recent: Any time
• Containerization - Level: Confirmed - Most recent: Any time
• Design Principles and patterns - Level: Confirmed - Most recent: Any time
• Développement JAVASCRIPT - Level: Confirmed - Most recent: Any time
• Développement PHP - Level: Confirmed - Most recent: Any time
• DevOps, MLOPS, GITLab - Level: Confirmed - Most recent: Any time
• Sécurité applicative, Security By Design - Level: Confirmed - Most recent: Any time
• SQL/NoSQL/PostgreSQL - Level: Confirmed - Most recent: Any time
• Tests automatisés - Level: Junior - Most recent: Any time

Language requirements:

Dutch or French
Level Native
English
Level Active knowledge