Senior Planner

Location: Irvine or Camarillo, CA (Hybrid – 4 days in office) Our Team We're dedicated to driving excellence in supply chain planning and revenue optimization for Semtech's high-growth Signal Integrity (SIP) business. Our team thrives on solving complex problems at the intersection of demand forecasting, capacity management, and strategic planning. We partner across the organization to turn data into actionable insights, balance competing priorities, and deliver solutions that protect revenue while optimizing inventory investment. If you're passionate about making an impact through analytical rigor, cross-functional collaboration, and innovative problem-solving, you'll thrive in this role. Job Summary The Demand Planning Manager is responsible for managing demand forecasts, inventory, and coordinating with the supply planning team for the SIP business unit. This position requires strong analytical skills, cross-functional collaboration, and the ability to translate complex supply chain issues into clear business impact. The role manages critical relationships with partners in supply planning, engineering, and product line managers, coordinates end-of-life planning for products, and supports revenue management activities to protect quarterly targets. This position requires deep knowledge of semiconductor manufacturing processes, capacity planning, and supply chain management. Responsibilities Demand Planning & Forecasting Analyze consensus forecasts, sales inputs, and historical trends to validate demand assumptions Coordinate with Product Management to validate demand and product lifecycle forecasts Participate in S&OP planning processes, preparing analysis and recommendations for leadership Supply Planning & Inventory Management Coordinate with foundry and supply planning partners on wafer releases, allocation, and delivery schedules Develop recommendations for material prebuilds, safety stock strategies, and buffer builds Monitor WIP inventory levels and Days of Inventory (DOI) targets Analyze slow-moving and excess inventory, developing disposition strategies Product Lifecycle & EOL Lead end-of-life (EOL) planning activities including Last Time Buy (LTB) quantity calculations and Last Time Ship (LTS) planning Manage product lifecycle transitions (new product introductions, fab transfers, tester migrations) Cross-Functional Collaboration Translate engineering and manufacturing issues into business impact language for executive communication Work with Sales and Operations teams on customer allocation decisions and urgent order prioritization Systems & Data Management Maintain demand planning data in SAP APO and other planning systems Generate reports and analysis using Excel, SAP, and business intelligence tools Support system improvements and process automation initiatives Provide backup coverage for team operations including delinquency reporting and data uploads Minimum Qualifications Bachelor’s degree in Business, Supply Chain Management, Engineering, or related field 5+ years of experience in demand planning, supply chain planning, or operations planning Experience in semiconductor or high-tech electronics manufacturing environment Strong analytical skills with advanced Excel proficiency Experience with ERP/MRP systems (SAP preferred) Excellent written and verbal communication skills with ability to present complex information clearly Proven ability to work effectively across multiple functional teams and time zones Strong problem-solving skills and ability to make decisions with incomplete information Self‑motivated with ability to manage multiple priorities in a fast‑paced environment Desired Qualifications APICS CPIM or CSCP certification Experience with semiconductor foundry and OSAT operations Knowledge of photonics or optical communications products Experience with SAP APO (Advanced Planning and Optimization) Familiarity with S&OP planning processes Experience managing product end-of-life transitions PowerPoint presentation skills for executive audiences A reasonable estimate of the pay range for this position is $93,000 - $130,000. Compensation may vary based on qualifications, experience, and location. #J-18808-Ljbffr Sierra Wireless