SaaS Systems Manager D365 FandO - Financial Services A leading financial services organisation is seeking an experienced SaaS Systems Manager to oversee and optimise their finance technology landscape. Reporting to both the IT Director and Group Finance and Strategy Director, you''ll support core finance systems, drive process improvements, and partner closely with global finance teams.Role and ResponsibilitiesOwn and manage OneStream and Microsoft Dynamics D365 in line with Finance and IS standards.Maintain legal entity hierarchies, system configurations, access controls, and user permissions.Partner with accounting teams to resolve D365 issues and ensure smooth daily operations.Extract data and perform ETL tasks; manage integrations and data flows between systems.Gather and document business requirements for new functionality, modules, and localisation.Lead testing, validation, system changes, and workshops with finance and IT teams.Support integration of new business units into the company''s financial systems.Build dashboards, reports, workflows, and enhance financial processes in OneStream and D365.Maintain group COA, create new entities/dimensions, and align mapping with local finance leads.Liaise with finance teams, auditors, and stakeholders to ensure systems meet reporting needs.Essential Skills and Experience3+ years'' experience with OneStream, Dynamics 365, Hyperion, or similar finance systems.Must have direct experience with D365 (Ideally FandO) Strong understand