Senior Procurement Specialist

Summary

Timezone: West Coast U.S. preferred

The Wikimedia Foundation is looking for a Senior Procurement Specialist to support procurement operations, strategic sourcing, vendor management, and contract drafting needs across our global organization. This role will serve as a key partner to departments throughout the Foundation, supporting source to pay activities (i.e.: procurement activities from vendor sourcing, new vendor onboarding contracting, purchase order management, resolving PO-related invoice holds, and ongoing vendor support).

The Senior Procurement Specialist will have a broad scope, balancing day-to-day procurement operations with opportunities to support competitive sourcing, contract negotiations, vendor spend optimization, and improvements to procurement processes and systems. This role will help strengthen a responsive, scalable, and effective procurement function while delivering strong service and value to the organization.

Core Responsibilities

• Manage procurement activities throughout the procure-to-pay and source-to-pay lifecycle, including contract and statement of work review, vendor onboarding, purchase orders, and related procurement activities.
• Partner with departments to understand and define purchasing needs,providingguidance throughout the procurement process.
• Support and lead competitive sourcing activities, including developmen