Join a dynamic Subcontracts team supporting the CEMA business area and the MARS, Futures, and Coalition portfolios. We are seeking an experienced Principal Subcontract Administrator who can independently manage complex, mission-critical subcontracting activities across multiple programs and priorities. In this role, you will partner closely with Supply Chain Program Management, Program Management, Engineering, Contracts, Finance, Quality, and other cross-functional stakeholders to develop and execute subcontracting strategies that support program objectives for schedule, cost, technical performance, and supplier execution. The Principal Subcontract Administrator will provide flexible support across MARS, Futures, and Coalition, including suppliers and subcontractors that may support multiple projects or program requirements. The successful candidate must be comfortable balancing competing priorities, understanding total supplier demand, and adjusting workload as program needs evolve. You will independently manage the full subcontract lifecycle, including requirements development, acquisition planning, solicitation and proposal evaluation, source selection, negotiation, award, administration, change management, and closeout. Responsibilities include preparing and issuing Requests for Proposal (RFPs), analyzing supplier proposals, developing negotiation strategies, conducting negotiations, documenting price and cost analyses as applicable, and executing subcontract awards and modifications within established authority. You will monitor subcontractor performance against contractual requirements, identify and mitigate cost, schedule, technical, and supply-chain risks, and proactively resolve supplier issues that could affect program execution. You will work closely with suppliers and internal stakeholders to ensure subcontract requirements, terms and conditions, applicable FAR/DFARS clauses, and other contractual obligations are appropriately addressed. The Principal Subcontract Administrator will also support proposal activities, subcontract planning, supplier negotiations, program reviews, and strategic sourcing initiatives across the three portfolios. This position requires an individual who can operate with limited supervision, exercise sound business judgment, and effectively communicate risks, recommendations, and priorities to subcontract and program leadership