Billing & Admin Specialist - DISPUTES Location: Manchester Salary: £15.00 per hour (weekly pay) PAYE Job Type: 3 Months Working Hours: Monday-Friday, 9:00-5:00 or 8:30-4:30. Flexible working available. 1 day in the office (Tuesday) required. Checks: DBS and Basic Credit Check Training: 1-2 weeks in the office We are seeking detail-oriented and analytical professionals to support the Billing & Admin Specialist in managing and resolving GSCOP supplier disputes relating to food promotional invoicing. The role involves investigating disputes raised via the Client Connect portal, validating promotional charges, correcting inaccuracies, and ensuring full compliance with GSCOP regulations. This position is key to improving SLA performance, strengthening controls, and reducing the backlog of disputes. Key Responsibilities: Manage and resolve GSCOP supplier disputes raised through the Client Connect portal. Review disputed invoices, identify pricing discrepancies, and action corrections. Ensure updates are accurately reflected in Cedar and internal systems; raise new invoices or credit notes where required. Investigate branch charging, confirm if funds were distributed to stores or FRTS, and coordinate recoupment. Work through a backlog of promotional invoice disputes, ensuring compliance with GSCOP standards. Maintain accurate documentation in Excel and legacy systems. Use SAP to attach and store supporting documentation for revised invoices. Produce MI reports on dispute volumes, progress, and trends for senior stakeholders. Support improvements to SLA and KPI performance through accurate processing and proactive issue identification. Rullion celebrates and supports diversity and is committed to ensuring equal opportunities for both employees and applicants.