HR/Office Administrator (Part-Time)

About the position

Pioneering Evolution is seeking Part-Time HR/Office Administrator to support both Human Resources operations and general office administration in a hybrid capacity (remote with on-site requirements in Crystal City, Arlington, VA). This role is ideal for a seasoned professional with a strong background in HR management and administrative support, preferably within the defense, aerospace, or government contracting industries. The HR/Office Administrator will be responsible for maintaining compliance, supporting employee engagement, overseeing day-to-day office operations, and ensuring operational efficiency across personnel and administrative functions. This is a part-time position (approximately 24 hours/week, flexible within core business hours).

Responsibilities

  • Maintain accurate and secure personnel records (digital and physical).
  • Support employee onboarding and offboarding processes.
  • Ensure internal HR processes adhere to federal, state, and client-specific labor regulations.
  • Assist with internal audits and compliance reviews.
  • Administer HRIS updates, benefits enrollment, and employee data changes.
  • Support employee engagement initiatives and internal communications.
  • Prepare HR reports for leadership and contract compliance.
  • Maintain confidentiality and handle sensitive information with discretion.
  • Assist with candidate scheduling, coordination, and communications.
  • Maintain applicant tracking system (ATS) records and reporting.
  • Support recruitment and talent management initiatives as directed by leadership.
  • Serve as the primary point of contact for day-to-day office operations.
  • Manage office supplies, equipment, and vendor relationships.
  • Coordinate meeting logistics, scheduling, and office communications.
  • Assist with timekeeping, travel coordination, and expense tracking as needed.
  • Support leadership with administrative tasks, including document preparation and correspondence.
  • Ensure the office environment supports collaboration, efficiency, and compliance with security requirements.

Requirements

  • Minimum of 3 years of progressive HR and/or administrative experience, preferably within the defense, aerospace, or government contracting industry.
  • Strong knowledge of federal labor laws, Equal Employment Opportunity (EEO), Office of Federal Contract Compliance Programs (OFCCP), and security clearance processes.
  • Experience with HRIS and ATS platforms (e.g., Deltek, Unanet, ADP, Workday).
  • Demonstrated office administration experience, including scheduling, vendor management, and executive support.
  • Excellent organizational skills with strong attention to detail.
  • Strong communication and interpersonal skills with the ability to engage employees across all levels.
  • Ability to balance multiple priorities while maintaining efficiency and accuracy.
  • Bachelor’s degree in human resources, Business Administration, or related field (or equivalent work experience).
  • Active Secret Clearance preferred or ability to obtain.

Nice-to-haves

  • Professional HR certification (PHR, SHRM-CP, or equivalent).
  • Previous experience working in a government contracting, defense consulting, or national security-focused organization.
  • Prior active security clearance.
  • Experience managing hybrid/remote office environments and supporting distributed teams.
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