Billing Specialist III

Job Locations US-VA-Reston
Job Post Information* : Posted Date 1 week ago(9/20/2022 4:45 PM)
Location : Location
Potential for Remote
Clearance Requirement
Job Requires Relocation
Job Requires Relocation


SOSi is seeking an experienced Billing Specialist III to join our Billing team at our operational headquarters in Reston, VA.


  • Calculates billing charges in accordance with contracted terms within the Deltek accounting system.
  • Uses contract calendar for invoicing activities.
  • Reviews billing data from various sources to ensure that the amounts and account numbers are accurate.
  • Investigates the billing suspense items and bills as needed.
  • Submit invoices to customers via email or other payment portals.
  • Post invoices in the accounting systems.
  • Interprets and explains invoices to client and staff as needed.
  • Monitors collection of receivables, contacts customers and resolves accounts over 30 days.
  • Maintains / updates monthly Billing Tracker sheet on a daily basis.
  • Monitors for and informs Billing Manager if there are any problems with the labor, expense report, and contract as well as any other issues hindering invoice preparation.
  • Participates in projects performed by the Billing Department.
  • Identifies potential problems or areas for improvement and recommends solutions.
  • Assists in external and DCAA audits.
  • Performs other duties as assigned by management.


  • Bachelor’s Accounting degree, or degree in a related discipline preferred.
  • Four to six years of prior billing experience, preferably in a U.S. Government contracting environment.
  • Previous experience with Deltek Costpoint required.
  • Experience with submitting invoices in WAWF desired, but not required.
  • Independent, self-starter who can multi-task effectively, has a strong attention to detail and works with minimal supervision.
  • Excellent oral and written communication skills.
  • Strong analytical and problem-solving ability.
  • Solid understanding of Microsoft Office Suite, especially Excel.

Preferred Qualifications

  • Fluency in a foreign language is desirable, but not required. 

Working Conditions

  • Working conditions are normal for an office environment.
  • Eligible for remote work after initial training period.
  • No travel will be required.

SOSi is an equal employment opportunity employer and affirmative action employer. All interested individuals will receive consideration and will not be discriminated against on the basis of race, color, religion, sex, national origin, disability, age, sexual orientation, gender identity, genetic information, or protected veteran status. SOSi takes affirmative action in support of its policy to advance diversity and inclusion of individuals who are minorities, women, protected veterans, and individuals with disabilities.


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