4 Aug 2026

Billing Specialist I at Amentum

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Job Description

Amentum is a global leader in designing, engineering, and modernizing critical systems and programs of national importance across defense, security, intelligence, energy, and the environment. Driven by our commitment to creating a secure, sustainable future, we innovate as a collaborative team of passionate professionals dedicated to making a meaningful impa…

Billing Specialist I

Regular Responsibilities Include:

  • Preparing detailed invoice packages with appropriate documentation and backup, as per standing policies and procedures
  • Preparing and reconciling labor postings for T&M billing
  • Preparing correcting Journal Entries for billing
  • Classifying billable vs. non-billable costs, based on program standards
  • Validating accuracy of system transactions
  • Research of old transactions for billing
  • Detailed unbilled analysis
  • AR aging analysis
  • Keeping accurate and complete records and tracking invoice status
  • Following up with field and US based teams on invoice and cost status
  • Timely rework of invoice rejections
  • Review and tracking of contract funding
  • Response to audit requests, as necessary
  • Verification, cost allocation and receiving of subcontracts’ invoices.
  • Other program accounting and billing work, as directed.

Education and Certification Requirements

  • Bachelor’s Degree in Accounting, Finance, or Business

Work Experience Requirement

  • 3-5+ in an Accounting or Finance related field
  • At least 2 Years in an Accounting-specific function

Knowledge, Skills and Abilities Requirements:

Language Skills:

  • Strong English communication skills, both written and oral

Mathematical Skills:

  • Advanced Math skills (University level)

Reasoning Abilities:

Ability to define problems, collect and analyze data, establish facts and propose solutions

Ability to exercise sound judgement and make decisions independently

Other Knowledge, Skills and Abilities:

  • Have strong MS Office skills, especially in Excel and Word
  • Have strong written and verbal English communication skills
  • Have the ability to work through problems to completion
  • Be able to follow and accurately document processes and procedures
  • Have strong analytical skills
  • Be very detail oriented
  • Have experience with Microsoft Dynamics, Cost Point experience is a plus


Method of Application

Submit your CV and Application on Company Website : Click Here

Closing Date : August 24, 2026





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