Functional Analyst - Legacy & Data Migration Job ID: JP055048

Functional Analyst – Legacy \& Data Migration

About the Role

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.

Key Responsibilities

• 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.

Requirements

• 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.

Practical Information

• 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

• 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.

Practical Information