Sr. Manager, Backend Sourcing

onsemi is seeking a highly driven and collaborative sourcing manager to join the Procurement organization as Manager, Backend Sourcing, based in Scottsdale, Arizona or San Jose, California. This role is responsible for managing strategic engagement with semiconductor assembly, test, packaging, substrate, and related backend manufacturing partners. You will develop and execute sourcing strategies that deliver market-competitive cost, supply assurance, quality, technology access, and alignment with onsemi’s product and manufacturing roadmaps. You will work closely with Business Units, Package Engineering, Test Engineering, Operations, Quality, Finance, Legal, and Supply Chain to translate strategy into disciplined commercial and operational execution.

Team & Sourcing Leadership

• Lead, coach, and develop a sourcing team responsible for semiconductor assembly, test, packaging, substrates, and related backend services

• Develop and execute category and supplier strategies aligned with corporate objectives, Business Unit growth plans, and package and test technology roadmaps

• Manage relationships with key OSAT, substrate, test, and backend manufacturing suppliers across the United States, Asia, and Europe

• Balance long-term capacity, technology, cost, and supplier-development priorities with near-term operational requirements

Supplier Relationship & Market Management

• Own day-to-day and senior-level relationships with strategic backend suppliers and build partnerships beyond transactional sourcing

• Implement Supplier Relationship Management governance, joint improvement roadmaps, and regular business reviews

• Prepare and lead supplier business reviews, track commitments, and drive timely closure of actions and escalations

• Monitor backend market dynamics, packaging and test technology trends, capacity conditions, geopolitical risks, and supplier capabilities

Commercial & Negotiation Management

• Lead negotiations for assembly, test, packaging, substrate, tooling, capacity, contracts, statements of work, and non-recurring engineering

• Manage RFQs, cost-model analysis, market benchmarking, bid normalization, and fact-based supplier counterproposals

• Negotiate agreements that secure supply, quality, flexibility, and competitive cost while managing commercial risk and long-term commitments

• Build and execute cost-reduction roadmaps and value-creation initiatives with suppliers and internal stakeholders

Operational Execution & Cross-Functional Alignment

• Partner with Supply Chain and Planning to translate demand forecasts into assembly, test, substrate, and backend capacity plans