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Administrative Assistant - Herndon, VA

Constellis
dental insurance, paid holidays, 401(k), retirement plan
United States, Virginia, Herndon
Oct 24, 2025
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POSITION SUMMARY



Provides administrative support to the Global Security Services Operations group. Duties include processing invoices, communicating with vendors, designing and maintaining spreadsheets, creating summary documents and providing training. Strong attention to detail and excellent communication skills are essential.



RESPONSIBILITIES




  • Costpoint Requisitioner and OnBase Requestor.
  • Costpoint Requisitioning and Receiving Subject Matter Expert. Trains field personnel as needed.
  • Codes medical, drug screen, physical and other vendor invoices.
  • Orders uniform items, distributes to employees and maintains inventory.


  • Coordinates on-time processing of vendor invoices, communicating with Directors, field personnel, AP, Procurement, Project Control, Subcontracts and other back-office departments regularly.
  • Troubleshoots vendor invoices.
  • Maintains direct relationships with vendors, working to obtain optimal service and efficiency.


  • Fields questions from vendors, back-office, contract and Ops field personnel or connects them with the appropriate contacts as appropriate.
  • Tracks data, analyzes, produces reports and communicates results in an accurate and timely manner.


  • Maintains multiple Excel trackers.


  • Documents procedures.
  • Produces summary reports.
  • Facilitates and tracks progress of employee award, sign-on and retention bonuses.


  • Communicates quarterly Compliance Training status.
  • Coordinates distribution of monthly Leave Balance reports to Contract Managers.


  • Other duties as assigned.



QUALIFICATIONS




  • High School diploma.


  • Minimum four years of administrative experience in a high-paced environment.


  • Self-motivated, organized and consistently exhibits strong attention to detail.


  • Excellent writing skills.


  • Ability to multitask and prioritize.


  • Ability to work independently and as part of a team.


  • Willingness to research, discover and learn independently.


  • Ability to foster and maintain cooperative working relationships.


  • Willingness to learn new applications, become a Subject Matter Expert, create procedural documentation and provide training to others.


  • Must maintain sensitive information in confidentiality.


  • Intermediate Microsoft Excel, Word and PowerPoint skills.


  • Experience with Costpoint, OnBase, Sharepoint and Cognos are a plus.



BENEFITS



Constellis offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflect its commitment to creating a diverse and supportive workplace.




  • Medical, Vision & Dental Insurance
  • Paid Time-Off Program & Company Paid Holidays
  • 401(k) Retirement Plan
  • Insurance: Basic Life & Supplemental Life
  • Health & Dependent Care Flexible Spending Accounts
  • Short-Term & Long-Term Disability
  • Personal Development & Learning Opportunities
  • On-the-job Training, Skills Development & Certifications
  • Employee Referral Program
  • Corporate Sponsored Events & Community Outreach



WORKING CONDITIONS



Work is typically based in a busy office environment and subject to frequent interruptions. Business work hours are Monday-Friday standard core hours, however some extended or weekend hours may be required.

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In an ever-changing and complex world, security concerns are paramount. Enhanced security requires education, training, and specialized skills. Constellis provides end-to-end risk management and comprehensive security solutions to safeguard people and infrastructure globally. Our team of strategic problem solvers has a steadfast moral compass and unwavering dedication to creating a safer world. Constellis is committed to the success of our customers and partners. Constellis protects critical priorities safely and efficiently around the world. Operating globally and based in the Washington D.C. area, our employees bring unparalleled dedication and passion for creating a safer world and upholding the highest standards of compliance, quality, and integrity. As a leading global provider of risk management, security, humanitarian, training and operational support services to government and commercial customers worldwide, Constellis' forward-thinking solutions include a range of synergistic services, including background investigations, social intelligence tools, advanced training, logistics and life support, UAV and K9 services, and crisis response mitigation. At Constellis, our number one priority is to secure success for our customers. For more information, visit http://www.constellis.com


EEOC Statement
Constellis and its affiliated companies are equal opportunity employers. All applicants receive consideration without regard to race, color, sex, age, ethnicity, religion, national origin, disability, veteran status or any other characteristic prohibited by federal, state, or local law.
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