Interim Director of Finance and Administration – Nonprofit (6 month Contract)

A national nonprofit organisation is seeking a hands-on interim Director of Finance and Administration for a six-month engagement. The role sits at the intersection of finance, HR, and general administration, requiring someone who is equally comfortable preparing financial reports and processing payroll as they are managing insurance renewals and employee onboarding. Three days per week will be spent in the Washington, DC office.

The successful candidate will coordinate directly with external accountants on the annual audit and Form 990, manage vendor relationships, and ensure the organisation remains compliant with Washington, DC employment requirements. This is a small-organisation environment where independent execution of day-to-day tasks is essential.

• Manage daily financial operations, maintain accurate records, and monitor organisational expenses
• Prepare budgets and financial reports for senior leadership review
• Coordinate with external accountants on the annual audit and Form 990 preparation
• Process payroll and maintain accurate employee pay and benefits information
• Administer insurance open enrolment, renewals, and employee benefits queries
• Handle staff onboarding, employee records, and routine HR administration tasks
• Manage vendor relationships and day-to-day administrative requirements

• Hands-on nonprofit finance and accounting experience, including budgeting and financial reporting
• Demonstrated experience coordinating annual audits and Form 990 preparation with external accountants
• Practical knowledge of Washington, DC HR requirements and employment practices
• Direct experience processing payroll and administering employee benefits and insurance programmes
• Experience managing insurance open enrolment, renewals, and broker relationships
• Ability to independently own and execute detailed daily finance, HR, and administrative tasks within a small organisation

Addison Group is a staffing and recruiting firm placing professionals across finance, technology, healthcare, and operations. The firm connects organisations with interim, contract, and permanent talent, with a focus on matching candidates to roles where they can make an immediate and practical contribution.