Supply Chain / Procurement / Buyer / Purchaser

Purpose and Scope
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.

The Buyer II will be responsible for all phases of purchase order and independent consultant agreement (ICA) administration, including acquisition planning, source selection, cost/price analysis, negotiation, post‑award administration and closeout. This is a mid‑level position that will be expected to possess a general understanding of government subcontracting, ability to work independently with some supervision and instructions, be solution‑oriented, contribute to meeting team and/or organizational goals, demonstrate good judgment and business acumen, and collaborate with stakeholders and other departments when needed.

Essential Responsibilities

Coordinate, develop, and produce documentation such as ICAs, purchase orders, modification task/delivery orders, solicitations, estimates, cost/price analyses, negotiation memorandums justifications, determinations, special contract provisions, representations, certifications, and correspondence.

Assist in coordinating, developing, and producing procurement documentation such as acquisition plans, source selection plans and evaluation criteria, Request for Proposals, agreements, profit analyses, statements of work, data submittal requirements, and proposal preparation instructions.

Assist in selecting the appropriate agreement type (FFP, CR, T&M, IDIQ, etc.) that is best suited for the prime contract, program needs, and overall risk profile.

Assist in evaluating proposals and quotations, determining offer responsiveness, responsibility, and eligibility for award, and provide support for discussions and negotiations.

Develop and maintain compliance files. Monitor and track deliverables.

Contacts suppliers, secures bids and executes purchase orders in accordance with Amentum procedures.

Establishes source of supply, negotiates price, delivery date, and other necessary commitments based upon authorized requisition and comply with company policies and federal regulations.

Conduct compliance file reviews in support of Government audits.

Assist in drafting, reviewing, and negotiating teaming and non‑disclosure agreements.

Coordinate with accounting and finance departments in administering invoices and payments, job cost management, contract audit/filing, and closeout process.

Ensure compliance with CPSR, FAR/DFARS, Agency‑specific regulations and Amentum policies and procedures.

Ensure agreement requirements are met, monitor cost status, assist in cost management, and coordinate issue resolution with customers.

Interface and coordinate with consultants and service providers, as well as Amentum HR, Finance, AP, and Program teams. Participation in cross‑functional collaboration and tiger teams.

Support small business goals, coordinate with technical staff, maintain records, and participate in small business outreach activities.

Assist in the development of negotiation strategy and assist in conducting negotiation of terms and conditions.

Review supplier proposals, including analysis of solicitation requirements and proposal responses.

Maintain and process purchase orders, releases, and modifications in Amentum’s business systems.

Close out purchase orders.

Perform all other position‑related duties as assigned or requested.

Minimum Position Knowledge, Skills, and Abilities Required

Bachelor’s degree in business administration or related field, and three (3) years of experience in subcontracts, procurement, supply chain or related field, or a master’s degree and up to two (2) years of experience. For this role, at least one (1) year of prior experience must be directly with subcontract administration.

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 basic negotiation skills; and working knowledge of SharePoint, Microsoft Office Suite, and integrated software applications.

Preferred Knowledge, Skills, and Abilities

Experience with Costpoint or similar ERP system, to include use of the purchasing module.

Process improvement experience in a recognized methodology (Lean Six Sigma, CMMI, ISO).

Knowledge of various agreement types (Cost-Plus, Fixed Price, Time & Materials, and subsets thereof).

Experience with Unanet, AMRO, IBM Maximo, Hyland OnBase, IBM Cognos, Deltek Time and Expense, OnPoint, Centresuite systems.

Specialized knowledge such as Construction, Engineering, Manufacturing, Labor Broker, and Independent Consultant agreements.

Work Environment, Physical Demands, and Mental Demands

May be required to travel domestically and internationally on short notice to include travel to austere environments under harsh living conditions.

Other Requirements: Minimal travel may be required, CONUS or OCONUS locations.

Must be able to obtain and maintain facility credentials/authorization.

Recruitment Salary Range
$65,000.00 to $75,000.00 (Salary to be determined by the education, experience, knowledge, skills, and abilities of the applicant internal equity, and alignment with market data.)

This position includes a competitive benefits package.

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
06/22/2026 - 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.

Equal Opportunity Employer Statement
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 (

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