Keywords: Accounts receivable, AR, billing, invoicing, invoice processing, order-to-cash, O2C, revenue tracking, financial reconciliation, billing accuracy, PO validation, project coordination, service coordination, operations support, scheduling, work order management, customer operations, ERP systems, Sage, CRM systems, data entry, reporting, Microsoft Excel, cross-functional coordination, sales support, field operations support, process improvement, detail-oriented, fast-paced environment, administrative support, operations coordinator, billing coordinator, project scheduler. This role is responsible for supporting project execution, managing order-to-cash activities, and ensuring billing accuracy through close collaboration with sales, field operations, and finance.