• Recording and reconciling credit card transactions, ensuring all receipts are submitted and charges are correctly coded • Supporting month-end close processes to ensure transactions are entered accurately and on time • Assisting the finance team in enforcing RP's expense policies • Assisting with the annual audit by providing necessary documentation and supporting schedules • Maintaining accurate and organized financial records, including W-9s, W-8BENs, invoices, and other supporting documentation • Maintaining confidentiality of Rethink Priorities financial records and activity • Managing day-to-day bookkeeping tasks including recording bills, contractor invoices, and external payment requests in Sage Intacct accurately and in a timely manner • Recording US and UK payroll entries and staff expense reimbursements, ensuring transactions are accurately recorded in the general ledger • Preparing and reviewing balance sheet reconciliations for month-end and year-end close; maintaining supporting schedules and processing assigned journal entries • Managing and overseeing day-to-day Accounts Payable and Accounts Receivable activities, ensuring timely vendor and contractor payments and accurate processing of deposits and expense reimbursements • Developing and maintaining spend analysis across departments and grants to support budgeting, forecasting, and financial reporting • Serving as a responsive and knowledgeable point of contact for staff finance questions and requests, including payment inquiries, expense coding, and platform access • Reviewing and approving staff reimbursement requests including meal per diems • Supporting the development and maintenance of cost methodologies, including indirect rates and cost allocation approaches, and assisting with financial forecasting to inform budgeting and grant reporting • Collaborating with the Controller and finance team on strategic initiatives and process improvement projects as the organization grows • Creating and maintaining Standard Operating Procedures for the Finance and Operations team • Supporting the organization during periods of substantial org-wide growth and within the Finance department as needed.