Functional Analyst – Legacy & Data Migration Job ID JP055048

We are looking for a Functional Analyst to support the modernization of legacy and mainframe-based systems. The role focuses on analyzing existing applications data structures and business processes and translating them into modern functional processes and data models.

• Analyze legacy/mainframe environments applications data structures and processes.
• Document business logic data definitions dependencies and business rules.
• Perform data mapping impact analysis and data modelling.
• Develop functional processes semantic models integration concepts and ontologies.
• Analyze logging audit trails and operational data.
• Support the migration of applications processes and data to modern platforms.
• Validate migrated processes and data.
• Collaborate with business users architects developers DBAs security specialists and project managers.
• Facilitate workshops with domain experts and document requirements and outcomes.

• Proven experience in Business and Functional Analysis.
• Experience with legacy/mainframe analysis and migration projects.
• Strong knowledge of data mapping impact analysis and data modelling.
• Knowledge of semantic modelling and ontologies.
• Experience with logging audit trails and operational data analysis.
• Strong analytical communication and documentation skills.
• Ability to bridge business data architecture and technology.
• Dutch French and English proficiency.

• Start: 15 September 2026
• Duration: Until end of 2026 extendable
• Workload: Full-time (40 hours/week)
• Location: Brussels
• Work model: Hybrid minimum 2 days per week onsite