Federal Government Billing Specialist

Ampcus Inc. is a certified global provider of a broad range of Technology and Business consulting services. We are in search of a highly motivated candidate to join our talented Team.

Job Title: Federal Government Billing Specialist

Location(s): Cary, NC
(Hybrid: on-site Tuesday-Thursday; remote Monday & Friday)

Position Overview
A leading healthcare organization is seeking a proactive and detail-oriented Federal Government Billing Specialist to join the Order Management team in Cary, NC. This role is a backfill position with added responsibilities supporting system upgrades and automation initiatives. The specialist will play a critical role in ensuring accurate, compliant, and timely billing for U.S. Federal Government contracts.

The ideal candidate is highly organized, detail-oriented, and comfortable working across multiple federal invoicing platforms while collaborating with cross-functional partners.

• Prepare, review, and submit invoices through federal invoicing platforms including WAWF, IPP, Tungsten (OB10), and ECAT, ensuring compliance with agency-specific and contract requirements.
• Review contract terms, purchase orders, and funding modifications to ensure accurate billing for reagents, consumables, and related products.
• Monitor unbilled receivables and proactively resolve invoice holds, rejections, or discrepancies.
• Investigate and resolve WAWF rejections in coordination with Contract Administrators and Credit & Collections teams.
• Maintain accurate invoice tracking spreadsheets, logs, and supporting documentation; ensure data integrity across systems.
• Act as a liaison between internal teams including Account Order Management, Contract Finance, Sales, and Credit & Collections to resolve billing issues and disputes.
• Support system upgrades, process improvements, and automation initiatives within the Order Management function.
• Perform additional duties as assigned to meet evolving business needs.

• Experience with U.S. Government invoicing platforms such as WAWF, IPP, and Tungsten (OB10); exposure to ECAT is a plus.
• Understanding of federal billing compliance, contract terms, and invoicing requirements.
• Strong attention to detail and accuracy due to strict government contract requirements.
• Ability to manage multiple invoicing workflows simultaneously and prioritize tasks effectively.
• Excellent written and verbal communication skills.
• Strong analytical and problem-solving skills with a proactive approach to issue resolution.
• Ability to handle sensitive and confidential information with integrity.
• Proficiency in Microsoft Office Suite (Excel, Outlook, Word) and billing systems.
• Team-oriented, reliable, and flexible with a commitment to operational excellence.

• Experience: Open to entry-level candidates; preference for 1-3 years of billing experience, particularly with federal or government customers.
• Education: High school diploma and relevant work experience required; college degree not required.
• Training: Willingness to learn new systems; training provided for candidates with strong billing fundamentals.

• Works closely with:

  • Account Order Manager (primary partner).
  • Credit & Collections (invoice resolution).
  • Contract Finance (data validation and compliance)

• Role balance: approximately 70% independent work / 30% cross-functional collaboration.

Ampcus is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veterans or individuals with disabilities.