Workforce Planning Manager Jobs in California (NOW HIRING)

Job Title: SIOP Planning Manager Location: Sunnyvale, CA Type: 5 month contract (potential for extension/conversion) Compensation: $77-83/hour, depending on qualifications Contractor Work Model: Hybrid – onsite 3 days Hours: 40

Overview The SIOP Planning Manager leads demand and supply planning activities within a complex manufacturing and supply chain environment. This role leverages advanced analytics, forecasting models, and cross-functional collaboration to optimize inventory, balance supply and demand, and drive operational and financial performance across the organization.

Responsibilities

• Lead demand and supply planning activities within a complex manufacturing and supply chain environment.
• Leverage advanced analytics, forecasting models, and cross-functional collaboration to optimize inventory, balance supply and demand, and drive operational and financial performance.
• Manage the Sales, Inventory, and Operations Planning (SIOP) process to develop accurate demand and supply plans.
• Build and maintain analytical models for demand forecasting, inventory optimization, capacity planning, and supply planning.
• Translate demand and supply plans into financial impacts including revenue, margin, inventory, and working capital performance.
• Partner with Sales, Marketing, Finance, Manufacturing, Engineering, and Supply Chain teams to develop monthly, quarterly, and long-range forecasts.
• Develop scenario plans to evaluate demand and supply risks, trade-offs, and mitigation strategies.
• Analyze historical shipments, consumption trends, and product segmentation data to improve forecast accuracy and inventory performance.
• Support new product introduction (NPI), product lifecycle planning, and end-of-life (EOL) strategies through cross-functional coordination.
• Manage inventory targets, safety stock strategies, and regional supply requirements to support customer demand and operational objectives.
• Develop constrained capacity and material build plans based on manufacturing capabilities, line efficiencies, labor, and material availability.
• Monitor key performance indicators including forecast accuracy, OTIF, inventory attainment, backorders, and fill rates while driving corrective actions.
• Facilitate cross-functional SIOP meetings and present planning data, business insights, and recommendations to leadership teams.
• Troubleshoot and resolve MPS/MRP planning issues and support system implementations, testing, and process improvements.
• Lead continuous improvement initiatives focused on operational efficiency, process standardization, and profitability enhancement.

Requirements

• MS/MBA with 6+ years of relevant experience or BS degree with 8+ years of relevant supply chain or planning experience.
• Degree in Supply Chain, Operations Research, Engineering, Finance, Math, Industrial Engineering, or related field preferred.
• Strong manufacturing, supply chain, and SIOP planning experience.
• Advanced analytical, data modeling, and problem-solving capabilities.
• Experience with demand forecasting, inventory optimization, and supply planning methodologies.
• Strong understanding of capacity planning, material constraints, and manufacturing operations.
• Experience supporting product lifecycle management including new product introductions and end-of-life planning.
• Advanced proficiency with Microsoft Excel and PowerPoint.
• Experience with ERP and advanced planning systems such as SAP, IBP, Oracle, O9, or similar platforms.
• Ability to interpret large datasets and translate findings into actionable business recommendations.
• Strong communication, collaboration, and executive presentation skills.

Preferred Qualifications

• Experience leading cross-functional planning initiatives in regulated or complex manufacturing environments.
• Familiarity with statistical forecasting models and forecasting accuracy improvement methodologies.
• Experience supporting operational excellence and continuous improvement initiatives.
• Knowledge of MPS/MRP processes, testing, and system go-live support.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M- #LI-