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Subcontract Administrator III

United States, Jacksonville 100000.00 USD / Year · Job Posted May 14, 2026
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Job Description

Amentum, a global leader in critical mission support, engineering, technology, and national security solutions, is seeking a Subcontract Administrator III to support a government contract based in Kings Bay, Georgia. The KBOS contract operates 24/7/365, with standard hours Monday–Friday, 0700–1600. Onsite with potential opportunity to work hybrid. Responsible for all phases of subcontract 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 and Amentum policies and procedures. This is a mid/senior level position that will be expected to possess a solid understanding of government subcontracting, work independently with minimal instruction, be solution-oriented, contribute meaningfully to team and/or organizational goals, demonstrate excellent judgement and business acumen, collaborate with stakeholders and other departments, identify risks and mitigation strategies, and support special projects.

Job Responsibility

  • Coordinate, develop, and produce subcontract documentation such as NDAs/TAs, subcontracts agreements, modification task/delivery orders, solicitations, estimates, cost/price analyses, negotiation memorandums, justifications, determinations, special contract provisions, representations, certifications, and correspondence
  • Coordinate, develop, and produce procurement documentation such as acquisition plans, source selection plans and evaluation criteria, RFPs, agreements, profit analyses, statements of work, data submittal requirements, and proposal preparation instructions
  • Select the appropriate Subcontract type (FFP, CR, T&M, IDIQ, etc.) that is best suited for the prime contract, program needs, and overall risk profile
  • Evaluate proposals, determine offer responsiveness, responsibility, and eligibility for award, and perform discussions and negotiations
  • Performs due diligence research for subcontractors, vendors, and consultants
  • Develop and maintain subcontract files in accordance with Amentum policies, procedures, and processes
  • Monitor and track subcontractor deliverables including but not limited to invoices, certified payroll reports, daily status reports, etc.
  • Review and process subcontract purchase requisitions
  • Review contract documents and coordinate with Contracts Manager/Project Manager of any issues found
  • Reviews prime contract documents for FAR compliance issues and ensures compliance with those FARs throughout contract performance
  • Works with Legal and Contracts to resolve subcontractor disagreement of terms and conditions, execute contract terminations or to file a claim as required
  • Coordinate with accounting and finance departments in administering subcontract invoicing and payments, job cost management, contract audit/filing, and closeout process
  • Responds to inquiries, provides reports containing all requested contract data, analyzes incoming correspondence for action required, researches and resolves problems related to day-to-day contract administration and associated operational issues
  • Ensure compliance with company policy and procedure
  • Support internal and external audit
  • Perform all other position related duties as assigned or requested

Requirements

  • Bachelor's degree in Business Administration or related field, and five (5) years of experience in subcontracts, procurement, supply chain or related field, or a Master’s degree and three (3) years of experience
  • At least three (3) years 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
  • Experience with various subcontract types (Cost-Plus, Fixed Price, Time & Materials, and subsets thereof)
  • US Citizenship
  • Active Secret or TS/SCI Clearance
  • or ability to receive or maintain Secret or TS/SCI clearance

Nice to have

  • Understanding of contract requirements, risk management, contract documentation, and procurement for services and construction services
  • Ability to read, analyze, and interpret general business procedures and governmental regulations (Federal Acquisition Regulations (FAR))
  • Knowledge of prevailing wage requirements, to include Davis Bacon Act, Service Contract Act/Wage Determination, Collective Bargaining Agreements preferred
  • Ability to write effective business correspondence and subsidize language in contracts
  • Ability to effectively present information, receive and respond to questions from groups of managers, clients, and customers both orally and in writing
  • Ability to interface with subcontractors to negotiate, resolve disputes, and make sound business decisions
  • Excellent communication and negotiation skills and working knowledge of Sharepoint, Microsoft Office Suite, and integrated software applications are required
  • Advanced organizational skills are required

What we offer

  • 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

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