The Senior Accountant III manages general ledger accounting, banking, billing, accounts payable and receivable, reconciliations, month-end close, financial reporting, sales tax compliance, and audit-ready records. The role supports budgeting, forecasting, payroll-related processes, internal controls, and job-level profitability analysis. It also partners with agency teams and clients to resolve billing discrepancies, provides financial guidance, improves accounting workflows, and supports other accounting staff.