Integration & API Analyst (Railway Systems)

Location: Brussels, Belgium; hybrid work with 2 days per week remote

Company

Médiane Benelux is an engineering company specializing in software, electronics, cybersecurity, embedded systems, and digital transformation for railway, automotive, energy, medical, aerospace, telecom, industry, and defense sectors.

What you will do

• Analyze integration needs and data exchange requirements for real-time railway traffic systems.
• Structure and formalize data models, business rules, and integration specifications.
• Design and document REST and SOAP API contracts, including validation against implementations.
• Collaborate with developers, architects, business stakeholders, and external partners across a multi-stakeholder European ecosystem.
• Define and execute API test scenarios, functional validation, and impact analysis for integrations and data flows.
• Support reliable, secure, and scalable data exchange across internal and external platforms in real-time and batch environments.

Requirements

• 5–10 years of experience in API, integration, or functional analysis roles.
• Strong experience in data modeling and system integration.
• Professional experience in Agile/Scrum environments and defining and managing user stories.
• Experience with API design using REST, SOAP, and WSDL; API documentation using Swagger/OpenAPI; and API testing with Postman or an equivalent.
• Knowledge of OAuth2, JWT, XML, XSD, XPath, SQL, and data querying.
• Programming knowledge in Java, .NET, or Python.
• Experience with functional integration validation, test cases, incident and defect root cause analysis, and non-functional requirements.
• French or Dutch at C2 level, the second national language at B2 level, and English at C1 level are required.
• Strong analytical and structured mindset, autonomy, proactivity, clear communication, resilience, teamwork, and ability to work in complex multi-stakeholder environments.

Nice to have

• Experience in integration impact analysis.
• Experience with API documentation and data dictionaries.
• Knowledge of railway or transport systems.

Culture & Benefits

• Permanent, full-time employment for a long-term mission in a critical IT environment.
• Teamwork, collaboration, innovation, and personalized employee development in a human-sized engineering company.
• Attractive salary package with additional statutory leave days.
• Mobility package with a car or public transport subscription.
• DKV health insurance, group insurance, meal vouchers, and eco-vouchers.