Senior Administrative Assistant

Overview

Job Title: Senior Administrative Assistant
Industry: Administrative / Executive Support / Office Operations
Location: Washington, DC (Hybrid)
Assignment Type: Contract (4–5 months)
Pay: $25–$30/hour (commensurate with experience)
Work Schedule: Full-time | 40 hours/week | Monday–Friday
Benefits: This position is eligible for medical, dental, vision, and 401(k).

Addison Group is partnering with a well-respected organization in Washington, DC seeking a detail-oriented and reliable Senior Administrative Assistant. The organization values strong organizational skills, proactive problem-solving, and a collaborative mindset, offering a fast-paced and dynamic workplace.

The Senior Administrative Assistant will provide high-level administrative support to senior leadership and internal teams. This hybrid contract role (4–5 months) involves managing calendars, coordinating travel, supporting invoice tracking, and organizing internal meetings and events.

• Manage calendars for senior leadership, including scheduling, conflict resolution, and prioritization.
• Provide administrative support to executives and team members across various functions.
• Coordinate travel arrangements and prepare related logistics.
• Process and track company invoices, maintaining accurate internal spreadsheets.
• Monitor invoice status updates and support the broader team in financial administration.
• Assist in planning and executing internal meetings and events, ensuring smooth logistics.

• 3–5 years of experience in senior administrative or executive assistant roles.
• Proficiency in Microsoft Office Suite (Excel, Word, Outlook) and Concur expense system.
• Strong organizational, analytical, and communication skills.
• Detail-oriented, dependable, and proactive in approach.
• Bachelor’s degree preferred but not required; relevant experience will be considered.

• Gain valuable experience supporting executive leadership.
• Contribute to key internal administrative and operational processes.
• Work in a professional, collaborative office environment.

Addison Group is an Equal Opportunity Employer. Addison Group provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state and local laws. Addison Group complies with applicable state and local laws governing non-discrimination in employment in every location in which the company has facilities.

Reasonable accommodation is available for qualified individuals with disabilities, upon request.