This Senior System Accountant role is focused on leading the implementation and ongoing management of a new ERP system within a fast-paced finance environment. You will be responsible for configuring the system, importing data, and overseeing user acceptance testing, ensuring the platform is tailored to meet financial reporting and operational needs. You will act as the principal system administrator, maintaining system architecture, data integrity, and supporting users across multiple business units. The role also involves producing reconciled trial balances and flash management accounts for several entities to support group consolidation. Collaboration with senior stakeholders in finance and IT is key, as is identifying opportunities to improve financial processes, training users, and providing first-line support. Strong project delivery experience, advanced Excel skills, and a detail-oriented, analytical mindset are essential for success in this role.