DARPA – Tactical Technology Office (TTO) Subcontract Administration Specialist

Amentum•Arlington, VA

1d•Onsite

About The Position

Amentum is seeking a meticulous and experienced Subcontract Administration Specialist to support the Tactical Technology Office (TTO) at the Defense Advanced Research Projects Agency (DARPA). In this role, you will be the liaison between our Operations team and Global Supply Chain Management responsible for subcontractor onboarding, funding modifications, invoice reconciliation, financial tracking, and vendor coordination as part of Amentum’s TTO contract management team. This is a full-time position in Arlington, VA (Ballston area)

Requirements

Bachelor’s degree in Business, Finance, or related field
At least 10 years of experience in subcontract or financial management
Demonstrated expertise in subcontractor invoice reconciliation and vendor management.
Hands-on experience using Costpoint, Unanet, and OnBase for financial reporting, reconciliation, and subcontract tracking.
Demonstrated professionalism, maturity, sound judgement, and excellent communication and interpersonal skills necessary for daily interactions with executive-level audiences in a dynamic, high-visibility environment
Creativity, foresight, and mature judgment in anticipating and solving financial, administrative, and program management-related problems and issues
Ability to work independently or in a team setting as circumstances dictate
Must be able to obtain and maintain a secret US Government Clearance. Note: US Citizenship is required to obtain a Secret Clearance.

Nice To Haves

Expertise in working with Global Supply Chain Management and Accounts Payable teams in a Government services environment.
Experience managing subcontracts in a fast-paced R&D environment with sensitive projects and high-profile deliverables.
Prior experience supporting DARPA
Active Secret security clearance, with the ability to obtain a Top Secret clearance.
Please note that US citizenship is required to obtain and maintain a security clearance
Ability to work on-site, full-time in Arlington, VA

Responsibilities

Work closely with the Contract management team, Accounts Payable, GSCM, and cross-functional offices to ensure smooth execution of subcontracts.
Identify opportunities to improve subcontract administration processes, particularly around invoice reconciliation, payment processing, and vendor tracking.
Proactively recommend solutions to streamline workflows and strengthen collaboration with Accounts Payable and GSCM teams.
Leverage advanced expertise in financial systems such as Costpoint, Unanet, and OnBase to process requisitions and maintain funding approval and allocation pipelines.
Organize subcontract-related records and data repositories on platforms like SharePoint, filer1, and Microsoft Teams, ensuring easily accessible and up-to-date documentation for audits and leadership review.
Generate regular status reports summarizing subcontractor performance, invoicing status, funds execution, and pending actions.
Track and manage subcontract deliverables, milestones, and performance.
Monitor adherence to contract terms, financial thresholds, and reporting requirements.
Reconcile subcontractor invoices with funding and deliverable requirements, ensuring billing accuracy and alignment with contract performance.
Coordinate with subcontractors to review and resolve invoice discrepancies and other transactional issues.
Prepare and submit reconciliations across multiple financial systems, including Costpoint, Unanet and OnBase, while ensuring completeness and audit readiness.
Collaborate with DARPA’s Accounts Payable (A/P) and Global Supply Chain Management (GSCM) teams to facilitate prompt resolution of vendor-related issues.