Billing Specialist I

About Amentum

Amentum is a prominent provider of comprehensive global mission services supporting the U.S. Government and allied partners. The company offers training, logistics, operations, and maintenance services worldwide and employs approximately 44,000 personnel across more than 80 countries on impactful and challenging missions.

Key Responsibilities

• Prepare detailed invoice packages including required documentation and backup, following established policies and procedures.
• Reconcile labor postings related to Time and Materials (T&M) billing.
• Create correcting journal entries related to billing transactions.
• Differentiate billable from non-billable costs in accordance with program standards.
• Verify accuracy of accounting system transactions.
• Research historical transactions for billing purposes.
• Conduct detailed analyses of unbilled amounts and aging accounts receivable.
• Maintain precise records and monitor invoice status continuously.
• Coordinate with field and US teams to resolve issues related to invoices and costs.
• Promptly handle and correct invoice rejections.
• Review and track contract funding levels.
• Respond as needed to audit inquiries.
• Verify, allocate costs, and process invoices from subcontractors.
• Perform additional accounting and billing tasks as assigned.

Education and Experience

• Bachelor’s degree in Accounting, Finance, or Business Administration.
• Minimum 3 to 5 years of relevant experience in accounting or finance, including at least 2 years focused on accounting functions.

Knowledge and Skills

• Proficiency in English communication, both written and spoken.
• Strong advanced mathematical skills equivalent to university level.
• Ability to identify issues, gather and analyze data, establish facts, and recommend solutions independently.
• Sound judgement and decision-making capabilities.
• Competence in Microsoft Office applications, especially Excel and Word.
• Attention to detail with strong analytical capabilities.
• Experience using Microsoft Dynamics; familiarity with Cost Point is considered an advantage.
• Ability to adhere to, document, and implement processes and procedures effectively.
• Capability of managing and completing tasks thoroughly.