Executive Assistant; Part-Time

One Federal Solution (OFS) is seeking an Executive Assistant to join our Corporate team at our headquarters in Alexandria, VA. This in-office, part-time role supports day-to-day office operations, provides administrative assistance to internal teams, and assists with basic financial tasks within Unanet. We are looking for a detail-oriented, organized, and proactive individual who can efficiently manage administrative responsibilities while supporting clerical finance functions.

• Greet visitors, manage front-desk operations, and ensure a professional office environment.
• Handle incoming calls, mail, scheduling, and general correspondence.
• Coordinate meetings, office activities, and internal logistics.
• Maintain office supplies, equipment, and overall workspace organization.
• Provide direct administrative support to the President & CEO, including special assignments requiring judgment and confidentiality.

• Assist with financial data entry, reconciliations, and administrative tasks within Unanet.
• Support timesheet oversight, expense processing, and billing inquiries.
• Coordinate with the finance team on routine tasks, reporting needs, and internal follow-up.
• Assist Corporate Operations with research, documentation, and light analytical tasks, demonstrating the ability to learn quickly and reason through complex topics.

• Previous experience in administrative, office support, or finance-related roles.
• Basic understanding of finance, bookkeeping, or accounting processes.
• Ability to learn new systems rapidly; familiarity with Unanet is a plus.
• Strong organizational, analytical, and problem-solving skills.
• Excellent written and verbal communication abilities.
• Proficiency with Microsoft Office (Word, Excel, Outlook).
• Ability to maintain strict confidentiality and handle sensitive information.
• Demonstrated ability to think critically, work independently, and take initiative.

• Experience in the government contracting industry.
• Prior hands-on use of Unanet or other ERP system preferred.
• Experience supporting executive staff or corporate operations.

One Federal Solution (OFS) is an innovative Professional Services provider with over 20 years of experience supporting Defense and Civilian agencies. OFS specializes in Business Intelligence, Acquisition and Procurement, and other Professional Services. We are pioneers, builders, thought leaders, and pride ourselves in thinking outside the box to co-create with our customers, helping them achieve excellent enterprise wide outcomes. As a certified Service-Disabled Veteran-Owned Small Business (SDVOSB), OFS is committed to providing people who deliver high performance and excellence to our government partners.