Functional Data Analyst – Legacy & Data Migration Job ID JP055049

We are looking for an experienced Functional / Data 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 data models functional processes and integration concepts.

• Analyze legacy/mainframe applications data structures data flows and business processes.
• Document business logic data definitions dependencies and functional requirements.
• Perform data mapping impact analysis and semantic modelling.
• Translate legacy requirements into modern functional processes data models and integration concepts.
• Contribute to the development of ontologies and semantic models.
• Analyze and exploit logging audit trails and data-query information.
• Support the migration of applications processes and data to modern platforms.
• Validate migrated processes and data to ensure accuracy and consistency.
• Collaborate with business users architects developers DBAs security specialists and project managers.
• Facilitate workshops with domain experts and document outcomes.

• Expert experience in Business Analysis and Functional Analysis.
• Strong experience with data modelling semantic modelling data mapping and impact analysis.
• Experience analyzing legacy/mainframe environments.
• Experience with application process and data migration.
• Knowledge of ontologies and semantic models.
• Experience analyzing logging audit trails and operational data.
• Strong documentation analytical and problem-solving 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