Senior Subcontracts Administrator - IRES

Position Title: Sr. Subcontracts Administrator
Location: Schriever Space Force Base, Colorado Springs, CO; Redstone Arsenal, Huntsville, AL; Fort Belvoir; VA, Dahlgren, VA; Vandenberg, CA
Relocation Assistance: None available at this time
Remote/Telework: Yes - Available for this position
Clearance Type: DoW Secret
Shift: Day shift
Travel Required: Up to 10% of the time
This role specifically requires Subcontract Administrator experience. Candidates whose backgrounds consist only of COR or contract administration duties do not meet the minimum qualifications for this position.
Description of Duties:
Amentum is seeking an experienced Senior Subcontracts Administrator to support the Missile Defense Agency (MDA) Integrated Research and Development for Enterprise Solutions (IRES) contract. This position independently manages a portfolio of complex, high-value subcontracts from acquisition planning through closeout and serves as the principal subcontract business advisor to program and task order teams. The role is accountable for compliant execution, sound business decisions, subcontractor performance, and complete, audit-ready procurement files in accordance with applicable FAR/DFARS requirements, prime contract flowdowns, company policy, delegated authority, and approved acquisition strategies.
The candidate will be responsible for the following:
Subcontract Management:
Lead the full subcontract lifecycle. Plan, compete, negotiate, award, administer, modify, and close complex subcontracts with minimal supervision while maintaining clear ownership of schedule, risk, approvals, and file documentation.
Develop the acquisition strategy.
Translate technical requirements into executable packages.
Conduct and document market research. Identify capable sources, assess competition, validate supplier eligibility and responsibility, and support make-or-buy, commerciality, and single- or sole-source determinations when applicable.
Manage solicitations and source selection.
Proposal Analysis, Negotiation, and Award:
Perform cost and price analysis.
Lead negotiations within delegated authority.
Document the business decision.
Establish the appropriate subcontracting arrangement.
Ensure award readiness.
Post-Award Administration and Supplier Performance:
Maintain contractual control.
Administer changes. .
Monitor subcontractor performance.
Resolve performance and payment issues.
Maintain effective supplier relationships.
Complete formal closeout.
Compliance, Records, and Business Leadership:
Interpret and apply requirements.
Maintain CPSR-ready and audit-ready files. .
Protect sensitive information.
Support reviews and corrective actions.
Improve execution.
The successful candidate will:
Exercise sound independent judgment and know when a matter requires management, legal, compliance, or customer escalation.
Manage multiple high-priority actions and short deadlines without sacrificing compliance, documentation quality, or business judgment.
Communicate contractual risk clearly and convert technical or program requirements into specific, enforceable subcontract language.
Be organized, responsive, detail-oriented, and effective in a collaborative, matrixed program environment.
Understand how subcontract terms allocate cost, schedule, technical, and performance risk and applies that understanding during negotiations.
Resumes, in month and year format, must be submitted with application in order to be considered for the position. The selected candidate may be assigned as an employee for one of our teammate companies.
Basic Requirements:
Must have 2 or more years of experience performing in a senior level subcontracts administration role or comparable position.
Must have 5, or more, years of directly related experience in Government subcontracting
Must have 10, or more, years of general (full-time) work experience
May be reduced with completion of advanced education
Must have demonstrated recent subcontract experience working with the FAR/DFARS
Working knowledge of multiple contract types including IDIQ, CPIF, T&M, firm-fixed price, and demonstrated ability to execute and interpret federal regulations within contracts
Must be proficient in Microsoft Word, PowerPoint, Excel, and SharePoint
Must have an active DoD Secret Security Clearance
Desired Requirements:
Have experience developing subcontract requirements with little to no prior acquisition history
Have demonstrated experience developing process improvements and new processes for subcontract management portfolios
This position is expected to pay $125,000 – $140,000 annually; depending on experience, education, and any certifications that are directly related to the position.
Compensation Details:
$125,000 - $140,000
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:
10/28/2026 - 10/31/2026
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.

Skills
Excel, Negotiation, Procurement, Documentation