API Analyst (K10048)

About the Position

API Analyst (K10048)

We're seeking an experienced API Analyst to join our Integration Team in Brussels, Belgium, specializing in API design, security, and governance.

Duration: 13 months

Dates: 21/09/2026 - 31/10/2027

Responsibilities

• Support development teams in analyzing, designing, and documenting APIs.
• Create and maintain API specifications, such as in OpenAPI/Swagger.
• Monitor API standards, naming conventions, version control, error handling, security guidelines, and documentation quality.
• Participate actively in discussions between business analysts, functional analysts, development teams, architects, security, and operational teams.
• Analyze existing APIs and integration patterns and propose improvements, standardization, and reuse.
• Support API governance, including reviewing API designs and aligning with architectural guidelines.
• Align API designs and integration choices with enterprise and solution architecture to ensure solutions fit within architectural principles and integration standards.
• Assist development teams in applying composable architecture principles to create a modular, reusable, and manageable application landscape.
• Contribute to knowledge sharing, documentation, templates, and guidelines for API development within the team and organization.
• Work towards the professionalization of the Integration Team as an enabling team for development teams.

Requirements

Core Skills

• API-analyse en API-design, inclusief REST API’s
• API-specificaties en API-contracten, inclusief OpenAPI/Swagger
• Integratieprincipes, middleware, messaging of event-driven integration
• Functionele en technische analyse binnen softwareontwikkeling
• Agile/Scrum samenwerking met development teams
• API-governance, standaardisatie, documentatie en lifecycle management

Secondary Skills

• ESB-omgevingen en integratieplatformen, bij voorkeur AXWAY en Fuse
• API-security, inclusief OAuth2, OpenID Connect, JWT of gelijkaardige concepten

Languages

• Dutch: Active knowledge
• French: Active knowledge
• English: Active knowledge

Nice to Have

• Experience with functional and technical analysis in IT projects or software development.
• Knowledge of composable architecture principles.
• Experience with API governance, API lifecycle management, version control, documentation, and service reusability.
• Knowledge of API security, such as OAuth2, OpenID Connect, JWT, certificates, access control, and secure API design.
• Knowledge of Agile/Scrum and experience in collaborating with or in development teams.

We Offer

• Competitive salary
• Opportunity to work in a dynamic and innovative environment
• Professional development opportunities

About the Company

The Federal Pension Service is looking for an experienced API Analyst to strengthen our Integration Team. This team supports the organization in designing, standardizing, managing, and further developing integration solutions and APIs within an integration landscape that uses AXWAY and Fuse as ESB technologies. The role has a clear link with application, integration, and technology architecture: The API Analyst translates architectural guidelines into applicable API agreements for the development teams. The API Analyst also contributes to a composable architecture by helping to define APIs as reusable, well-documented, and decoupled building blocks within the application and integration landscape.

The role is explicitly not an API developer role, but an enabling role: the consultant guides, advises, and supports development teams in correctly and consistently designing, documenting, publishing, and using APIs.

Application Process

Please include a presentation or document in your application describing an API or integration environment in which you have supported inexperienced development teams in analyzing, designing, documenting, or standardizing APIs. Clearly state the role you personally took, how you collaborated with development teams, architects, or other stakeholders, and how the APIs fit within the broader integration and composable architecture.

After receiving the CVs, they will be analyzed, and a shortlist of 3-5 candidates will be established based on the criteria set in the ProUnity contract. These candidates will then be invited for an interview where their technical, generic competencies, and language skills will be evaluated. Subsequently, a ranking will be established.