Accounts Payable Specialist IV

Amentum • Oklahoma City, OK • 18h ago

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.

The Accounts Payable Specialist will review and action the accounting of invoices and expense reports within the department. The post holder will assist in monitoring onbase queues, purchase order discrepancy report (as assigned) and assist to support the objectives of the AP department

Reports to Accounts Payable Manager, remote telework.

Key Responsibilities:

Complex Issue Resolution: Proactively resolving complex vendor discrepancies, including tri-way matching errors, historical reconciliation, and disputes requiring negotiation.

Analytical Reporting: Gathers, analyzes, and interprets vendor financial data to present trend analysis and detailed AP reports to management

Process Improvement: Analyzing existing AP processes to identify bottlenecks and recommending or implementing improvements for better efficiency and accuracy.

Perform efficient review of Onbase queues and ensures that pending invoices in personal and items in process queues are addressed in a timely manner.

Record and process high value/critical Invoices.

Monitor purchase order discrepancy report to identify good to approve invoices and submit report to AP manager every day

Coordinate with programs/sites and Domestic AP to resolve any queries that may arise during purchase order discrepancy review in an efficient and timely manner.

Upload documents to Onbase.

Review AP mailbox every week and ensure that invoices received from suppliers and programs are logged and uploaded to onbase in a timely manner.

Coordinate with program finance offices, project accountants and domestic AP team, to resolve any accounts payable related issues.

Prepare foreign currency analysis details for domestic AP team.

Assist with improving AP processes in all areas of assigned responsibilities and timely report of any issues

Perform all required statistical and clerical duties necessary in area of assignment.

Follow standard practice in procedures at beginning and ending of fiscal year and calendar year.

Maintain all files in a neat, orderly and up-to-date condition.

Perform the work of lower-level Accounting Clerks as required.

Knowledge, Skills and Abilities:

Proficient in Microsoft Office with a strong knowledge of Microsoft PowerPoint and other presentation software.

Work with a collaborative mindset and proven ability to work effectively with cross-functional teams are essential.

Excellent communication and collaboration skills.

Analytical and have problem-solving skills.

Ability to manage time and prioritize tasks.

Ability to work independently and as part of a team.

Organizational skills and ability to perform detail-oriented work, and a keen eye for aesthetics.

Minimum Qualifications:

5+ years of relevant experience with a High School Diploma or equivalent; 3-5 years of relevant experience with a Bachelors degree. Experience in accounting, preferably in handling Accounts Payable of large organization.

Strong understanding of Accounts Payable functions within a multinational company.

Experience in handling Accounts Payable in ERP environment.

Proficient in Excel, Word, Power Point and extensive knowledge of Costpoint & Cognos reports.

Excellent communication and people skills.

Ability to organize and prioritize multiple work assignments and work well under pressure.

US Citizenship is required to apply.

Preferred Qualifications:

Experience working in government or public sector.

Compensation Details:

$25 - $31 hourly

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

Health, dental, and vision insurance

Paid time off and holidays

Retirement benefits (including 401(k) matching)

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Note: Benefits may vary based on employment @type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

05/12/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters (https://postings.govdocs.com/#/vxSkbztPuAwwxfs) .

Amentum

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