This role prepares and performs quality-control reviews of Travel Authorization Requests, Requests to Initiate Purchase, and Consent to Purchase requests while tracking Government concurrence, purchasing activity, travel status, costs, and supporting documentation. The Senior Travel & Purchasing Coordinator will work closely with program leadership, travelers, task leads, finance, procurement, subcontractors, and Government stakeholders to ensure requests are complete, accurate , timely , and compliant with applicable task order requirements.