Senior Administrative Assistant

Addison Group; Washington (District of Columbia); Hybrid; USD 36,000 - 41,000; Full time

Benefits offered by this job

Executive-level exposure

Core admin functions

Professional office environment

Job summary

Addison Group is seeking a Senior Administrative Assistant for a hybrid contract in Washington, DC. The role provides senior-level administrative support to leadership and teams, with calendar management, travel coordination, invoice tracking, and event planning.

Ideal candidates have 3–5 years in senior administrative roles, strong organizational skills, proficiency with Microsoft Office and Concur, and a bachelor's degree is preferred but not required.

Qualifications

• 3–5 years of senior administrative or executive support experience.
• Calendar management, scheduling, and office operations.
• Bachelor's degree preferred; not required.

Responsibilities

• Own calendar management for senior leaders, including scheduling and conflicts.
• Provide broad administrative support across executives and cross-functional teams.
• Arrange travel logistics and related planning details.
• Track and process company invoices, keeping spreadsheets up to date.
• Help plan and execute internal meetings and events from start to finish.

Skills

Calendar management

Travel coordination

Invoice processing

Office operations

Communication skills

Education

Bachelor's degree preferred

Tools

Microsoft Office

Concur

Job description

Job Title: Senior Administrative Assistant

Industry: Administrative / Executive Support / Office Operations

Location: Washington, DC (Hybrid)

Assignment Type: Contract (2-3 months)

Pay: $26 - $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).

About The Company: Our client is a well-regarded organization in the Washington, DC area looking for a dependable, sharp Senior Administrative Assistant. They value strong organizational instincts, a proactive approach to problem-solving, and a team-first attitude, all within a fast-moving work environment.

Job Description: This hybrid contract role (2-3 months) provides senior-level administrative support to leadership and internal teams. Core responsibilities include calendar management, travel coordination, invoice tracking, and helping organize internal meetings and events.

Key Responsibilities:

• Own calendar management for senior leaders, including scheduling, resolving conflicts, and prioritizing competing requests
• Provide broad administrative support across executives and cross-functional teams
• Arrange travel logistics and related planning details
• Track and process company invoices, keeping internal spreadsheets accurate and up to date
• Follow up on invoice status and assist with financial administration tasks
• Help plan and execute internal meetings and events, managing logistics start to finish

Qualifications:

• 3–5 years of experience in senior administrative or executive support roles
• Demonstrated background in calendar management, scheduling, and office operations
• Proficient in Microsoft Office (Excel, Word, Outlook) and Concur expense reporting
• Strong organizational, analytical, and communication skills
• Detail-oriented, reliable, and proactive
• Bachelor's degree preferred, not required; relevant experience considered

Perks:

• Direct exposure to executive-level support work
• Involvement in core internal administrative and operational functions
• 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.