About the Role

The Technical Business Analyst role focuses on system behaviour, data structures, interface mappings, migration rules and functional equivalence between the legacy and modern system(s).

Responsibilities

• The technical BA works closely with architects and developers to ensure that business logic and system functionality are accurately translated during the rewrite.
• Analyse legacy Natural/ADABAS code, data structures and system interfaces to extract embedded business rules and technical activities.
• Document the technical requirements, interface specifications, and functionals corresponding rules for the modern C#/.NET architecture.
• Collaborate with Data Architects to define data migration rules, transformation logic, and validation criteria.
• Work with Integration and Solutions Architects to document interface mappings, ESB service contracts, and integration scenarios.
• Support the development of official/agreed data models and API specifications by providing functional context from legacy systems.
• Develop detailed use cases, system interaction diagrams and technical acceptance criteria to support design and testing.
• Participate in backlog grooming and solution design sessions, ensuring that technical stories accurately reflect business and legacy requirements.
• Review and validate developed components to ensure functional correspondence with legacy behaviour and business expectations.

Requirements

• 5
• 10+ years’ experience as a Business Analyst / System Analyst on complex enterprise systems.
• Strong understanding of legacy mainframe environments (Natural/ADABAS), data models and integration patterns.
• Exposure to C#/.NET or equivalent environments will be an advantage.
• Familiar with Agile delivery approaches and tools (e.g. Azure DevOps, Jira), while able to work in hybrid Agile-Waterfall transformation contexts.