Web Developer and Web Service API Consultant
Summary
Keystone Solutions is hiring a consultant to develop PHP/JavaScript applications, REST APIs, and web services for a Belgian police data modernization project (DECOM), working embedded at a client site in Brussels using Scrum, DevOps, and CI/CD. Hybrid setup with at least two office days per week; full-time mission running mid-Oct to end of Dec 2026.
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 within the DECOM program, aimed at migrating police data to a modern open architecture.
- 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, artificial intelligence, and ILP.
- Develop application components in PHP and JavaScript, participate in defining 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 skills
- Autonomy
- Self-taught
- Quality orientation
Language Skills:
Fluency in French or Dutch is required, with a passive knowledge of the second language.
Work Environment:
This position is full-time (40 hours/week) with a requirement to be present in the office at least twice a week, depending on tasks and in agreement with the team. Remote work is allowed from home or at the employer's location in Belgium. The team is multidisciplinary, consisting of a mix of internal and external collaborators.
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 - 31/12/2026 3 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