Long-term mission within a complex IT environment in the railway sector, bridging business needs and technical implementation. The role focuses on delivering reliable, user-centric solutions and ensuring alignment between stakeholders and development teams. Responsibilities Gather, analyze, and clarify business requirements from stakeholders Translate business needs into functional specifications and process models Act as the interface between business units and IT teams Support developers throughout the implementation phase Participate in integration testing and User Acceptance Testing (UAT) validation Ensure delivered solutions meet functional expectations Provide user support and contribute to continuous improvement initiatives Scope End-to-end functional analysis across IT systems Modeling and documentation of data flows, applications, and processes Collaboration with developers, testers, and end-users Continuous improvement of tools, processes, and user experience Profile / Requirements : Experience 10 years in functional analysis within IT environments Strong experience in documentation (functional analysis, use cases, processes) Proven ability to model systems using UML Solid understanding of data flows and application architecture Experience in integration testing and UAT Technical Expertise Tools: Enterprise Architect, Azure DevOps Modeling: UML Strong knowledge of IT systems and data flows Testing: integration testing, UAT Languages French or Dutch: C1 English: B2 Soft Skills Strong analytical and structured problem-solving mindset Clear communication and stakeholder management Detail-oriented and rigorous Customer-oriented with focus on user experience Ability to manage priorities and work under pressure Team player with cross-functional collaboration