Oversee financial and budget planning for the GS Sec, including the procurement of goods, services, grants, and financing contracts, Oversee cost management, cost monitoring and forecasting, ensuring that the financial performance aligns with GS Sec overall goals, Track costs, expenditures, and receivables to ensure financial targets are met within existing constraints, Produce regular financial reports and manage financial reporting, Regularly report to project management on financial status and update project management on any necessary actions or adjustments, Prepare invoices, ensuring that all deliverables and contractual terms are reflected accurately, Support the preparation, execution, and follow-up of external audits and internal controls, Provide expert advice to project staff regarding financial matters, ensuring that all legal and financial aspects are properly managed, Prepare financial reports to donors, ensuring that financial details, progress, and outcomes are effectively communicated, Perform other duties as assigned by supervisor