Lead Buyer

Amentum is a premier global services partner supporting critical programs of national significance across defense, security, intelligence, energy, and environment. Amentum draws from a century-old heritage of operational excellence, mission focus, and successful execution underpinned by a strong culture of safety and ethics. Headquartered in Chantilly, VA., Amentum employs more than 50,000 people on all seven continents.

This position will provide support to multiple programs. The primary program will be the U.S. Department of Justice (DOJ) International Criminal Investigative Training and Assistance Program (ICITAP) and Overseas Prosecutorial Development, Assistance and Training (OPDAT) program. Amentum provides specialized training, advisory and mentoring services to host nations under the Criminal Division’s ICITAP and OPDAT programs. ICITAP and OPDAT are a cornerstone of America’s global strategy for combating transnational crime, terrorism, countering trafficking in persons, establishing rule of law and enhancing human rights in developing countries. https://www.justice.gov/criminal-icitap.

The Lead Buyer will be responsible for all phases of purchase order and Independent Consultant Agreement (ICA) administration, cradle to grave, to include acquisition planning, source selection, cost/price analysis, negotiation, post-award administration and closeout. Responsible for ensuring compliance with government policies and procedures. This is a senior level position that will be expected to possess a wide range of experience and advanced understanding of government purchasing, work independently, and develop solutions to resolve complex issues, lead junior and mid-level staff, identify and lead process improvement projects, lead efforts to support team and organizational goals, exercise excellent judgement and business acumen, frequently collaborates with stakeholders, other departments, and senior leadership. Represent Global Supply Chain Management and partner with Capture Teams, Business Development, and Functional Area leads on strategy from capture phase through purchase order execution and delivery to end users.

Essential Responsibilities:

• Establishes source of supply, negotiates price, delivery date, and other necessary commitments based upon authorized requisition and complies with company policies and federal regulations.
• Provides information to requester that includes communication of procurement actions or status and assist with special requirements.
• Adheres to Supply Chain Procurement procedures to assure follow-up and administration of purchase order files.
• Reviews and processes purchase requisitions.
• Assists in the preparation of procurement centered reports.
• Contacts suppliers, secures bids and executes purchase orders in accordance with Amentum procedures.
• Evaluates proposals and quotations, determine offer responsiveness, responsibility, and eligibility for award, and perform discussions and negotiations.
• Makes procurement decisions based on best value, price, schedule, and terms.
• Provides pricing in support of Business Development efforts as required.
• Maintains procurement records in accordance with Contractor Purchasing System Review (CPSR) guidelines/controls.
• Ensures compliance with FAR/DFARS, Agency-specific regulations and Amentum policies and procedures for subcontracts and procurement.
• Conducts purchase order file reviews in support of Government audits.
• Supports the goals and objectives of the company as a part of a work group or team member.
• Negotiates and settles with suppliers regarding damage claims, rejections, losses, return of materials, over shipments and cancellations.
• Interfaces and coordinates with subcontractors and service providers, as well as Amentum HR, Finance, AP, and Program teams. Participation in cross-functional collaboration and tiger teams.
• Supports small business goals on assigned agreements, coordinate with technical staff, maintain records, and participate in small business outreach activities.
• Performs Purchase Order Closeouts.
• Manage team of 3-4 buyers/SCAs
• Perform all other position related duties as assigned or requested.

Minimum Knowledge, Skills, and Abilities:

• Bachelor's degree in Business Administration, or related field, and eight (8) years of experience in subcontracts, procurement or supply chain or related field, or a Master’s and five (5) years is required.
• Two (2) years of experience in procurement or related field may be substituted for each year of the four (4) years of college.
• Excellent communication and negotiation skills and advanced knowledge of Sharepoint, Microsoft Office Suite, and integrated software applications are required.
• Experience with various subcontract types (Cost-Plus, Fixed Price, Time & Materials, and subsets thereof).
• US Citizenship
• Candidates must be located in the DC metro area and able to support hybrid in-office work (2-3 days a week beginning in 2026). Amentum’s project office is in the Ballston neighborhood of Arlington, VA. No relocation package will be considered.

Preferred Knowledge, Skills, and Abilities:

• Process improvement experience in a recognized methodology (Lean Six Sigma, CMMI, ISO).
• Experience with Costpoint or similar ERP system, to include use of the purchasing module.
• Experience with AMRO, IBM Maximo, Hyland OnBase, Unanet, IBM Cognos, Deltek Time and Expense, OnPoint, Centresuite systems
• Capture and Proposal support experience.
• Experience with negotiating agreements
• Specialized knowledge such as Construction, Engineering, Manufacturing, ICA and Labor Broker subcontract agreements.

Work Environment, Physical Demands, and Mental Demands:

• Typical office environment with no unusual hazards, occasional lifting to 20 pounds, constant sitting while using the computer terminal, constant use of sight abilities while reviewing documents, constant use of speech/hearing abilities for communication, and constant mental alertness; must possess planning/organizing skills and be able to work under deadlines.
• May be required to travel domestically and internationally on short notice to include travel to austere environments under harsh living conditions.

Compensation Details:

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:

01/08/2026 - 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.