Business Analyst / QA (eInvoicing and Regulatory Change) Cardiff (one day p/week ideally but this may be flexible) Mid-Level Multi-country Regulatory Rollouts We re looking for a Business Analyst with strong QA coordination experience and hands-on exposure to eInvoicing and UBL-driven regulatory change. This role sits across Finance, Compliance and IT, supporting multi-country eInvoicing mandates. You ll own gap analysis, data mapping and UAT coordination, ensuring regulatory requirements are translated cleanly into system changes and validated through structured testing. What You ll Be Doing Regulatory Analysis and Gap Assessment Compare new country eInvoicing / UBL mandates against existing system configurations Perform structured gap analysis across processes, data and integrations Document clear, testable business requirements Maintain traceability from requirement through to test coverage and deployment Data Mapping and Onboarding Own data mapping documentation (fields, transformations, dependencies) Align changes across internal systems and vendors Support onboarding readiness for new country rollouts QA and UAT Coordination Define test approach and business-driven test scenarios Coordinate UAT execution and progress tracking Log, triage and manage defects through to resolution Validate production readiness and support post go-live checks Stakeholder and Vendor Management Act as the link between Finance, Compliance, IT and third-party ..... full job details .....