Principal Buyer (Buyer IV)

Amentum is seeking a Principal Buyer (Buyer IV) who under general direction, purchases a high volume and variety of materials, supplies, and services to support direct program requirements. You will be responsible for all aspects of the procurement cycle (cradle-to-grave). You will manage strategic agreements established by the corporate commodities team. Responsibility will include compliance with Global Supply Chain policies, procedures, and underlying federal, state, and/or local regulations concerning the purchase or shipment of goods, materials, or services. You may be receive higher value or higher complexity tasks with oversight from more senior level staff. The successful candidate will apply sound procurement techniques to support acquisition planning, acquisition strategies, and subsequent acquisition of materials and simple services to support prime contract operations for federal agencies.

The successful candidate will accomplish these objectives through daily, competent performance of the following duties.

• Apply sound procurement techniques to support acquisition planning, acquisition strategies, and subsequent acquisition of materials and simple services.
• Maintain a working knowledge of Federal Acquisition Regulations and standard commercial procurement practices.
• Review purchase requisitions for clarity, compliance, detail, completeness, and obtain additional information considered necessary.
• Develop sourcing lists for various commodities to support the development of requests for information (RFIs), quotations (RFQs), proposals (RFPs) and invitations to bid.
• Qualify potential suppliers.
• Review solicitation responses and perform relevant analyses to include price and cost, Statement of Work compliance, delivery terms, payment terms, and other terms and conditions of the procurement.
• Serve as a business advisor to internal customers, providing alternative solutions to requested items when such solution would provide a benefit to the Company (i.e. enhanced performance, cost savings, or positive schedule impact).
• Negotiate all aspects of procurements to include price, payment and delivery terms, quality requirements, and other factors with suppliers to achieve the best value procurement possible.
• Generate Purchase Orders in final form for approval and signature.
• Prepare and manage complete Purchase Order files in accordance with Federal Acquisition Regulation policies, Corporate Procurement guidance, and other applicable prime contract requirements to ensure compliance throughout the procurement cycle.
• Procure using streamlined acquisition methods such as purchase card transactions.
• Actively manage the procurement process from order placement through receipt of products and subsequent payment of invoices.
• Actively manage supplier performance through consistent communication to ensure proper adherence to purchase order terms and conditions.
• Participate in the invoice approval process to ensure that supplier invoices are in accordance with purchase order terms and conditions and resolve issues as necessary.
• Support proposal development pricing exercises
• Plan, organize, prioritize and perform multiple tasks to execute job functions in an orderly, efficient manner.
• Work professionally in a team environment and independently as necessary.
• Identify problems, analyze alternatives, and develop viable recommendations.
• Read, comprehend, and interpret written materials of moderate to high complexity.
• Compose written materials of moderate to high complexity on procurement-related issues.
• Act with integrity at all times when representing the Company.

Minimum Requirements:

• High School Diploma and Seven (7+) years purchasing experience in support of a Federal prime contract in a CPSR compliant environment.
• Experience managing strategic purchasing agreements (i.e. blanket purchase agreements).
• Must be proficient in basic office software applications (such as Word, Excel, Outlook, and Internet Explorer).
• Must exercise good judgment in safeguarding confidential or sensitive information and adhere to high standards of confidentiality and honesty.
• Must have excellent oral and written communication skills.
• Ability to travel to other locations up to 10%)
• Must be able to obtain and maintain a US Secret clearance level. (Note: US Citizenship is required to obtain a Secret clearance)

Preferred Qualifications:

• A BA/BS in Business, Supply Chain Management or a related discipline is preferred.
• Proficiency in the CostPoint ERP platform is desired.

Compensation Details:
US: $90,000 - $120,000

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:
03/05/2026 - 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 .