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
• Support new product introductions, package and test qualifications, production ramps, transfers, and business continuity plans
• Align suppliers with product, package, test, quality, yield, cycle-time, and manufacturing roadmaps
• Coordinate decisions and execution across global Business Units, Engineering, Operations, Quality, Finance, Legal, and Supply Chain teams

Performance Management & Continuous Improvement

• Establish and manage supplier KPIs across cost, quality, delivery, yield, cycle time, capacity, technology, and responsiveness
• Drive commercial and operational corrective actions, escalation management, and continuous improvement with suppliers
• Optimize the backend supplier portfolio to improve competitiveness, resilience, geographic diversification, and technology coverage
• Deliver measurable savings, cost avoidance, working-capital improvement, and supply-risk reduction

Qualifications

• 10+ years of semiconductor industry experience, including significant responsibility in backend sourcing, assembly and test manufacturing, packaging, substrates, supply chain, operations, or a related field
• Proven experience leading teams, managing complex projects, and influencing across global, matrixed organizations
• Strong record of negotiating assembly, test, packaging, substrate, capacity, and complex commercial agreements
• Deep understanding of semiconductor backend economics, package and test technologies, manufacturing flows, supply dynamics, and supplier cost drivers
• Demonstrated ability to translate Business Unit, product, package, and test requirements into actionable sourcing strategies
• Bachelor’s degree in engineering, supply chain, business, finance, or a related field

Preferred Qualifications

• Based in or able to work from Scottsdale, Arizona or San Jose, California, with flexibility for global travel
• Established relationships within the global OSAT, substrate, test, packaging, and backend manufacturing ecosystem
• Experience sourcing across conventional and advanced packaging, wafer-level packaging, assembly, final test, wafer sort, and substrates
• Advanced degree and a track record of delivering sustained cost, capacity, quality, technology, and risk-management results