Demand Planning Manager

About the Role

Are you ready to take the lead in driving supply chain excellence? We’re looking for a Demand Planning Manager to optimize inventory and lead supply planning across key product categories. In this role, you’ll ensure alignment between customer demand, operational capabilities, and financial goals, using MRP/ERP systems to balance service levels, working capital, and total supply chain cost.

As a critical leader within our supply chain team, you’ll collaborate with Operations, Manufacturing, Logistics, Finance, and external vendors to drive execution and continuous improvement. You’ll play a key role in the S&OP process, providing data‑driven insights, managing supply risks, and ensuring successful delivery of business objectives.

Location:

Onsite Chino, CA

• Own and execute end-to-end supply plans across assigned categories, ensuring optimal inventory levels and service performance
• Build and maintain relationships with customers to understand their product preferences, sample requirements, and expectations for new items
• Oversee product lifecycle planning, including phase‑ins, phase‑outs, and end‑of‑life inventory strategies
• Provide guidance, coaching, and potential oversight of business analysts and cross‑functional contributors as the team scales
• Lead supply planning processes and drive alignment across cross‑functional stakeholders
• Manage purchase order lifecycle, including creation, timing, expediting, and financial impact in partnership with Procurement and Finance
• Establish and maintain supply planning parameters (lead times, safety stock, reorder points, MOQs) to improve system accuracy and performance
• Monitor and report on inventory health, service levels, and working capital metrics; proactively adjust plans to meet targets
• Identify supply risks, constraints, and capacity gaps; develop mitigation strategies and communicate impacts to leadership
• Serve as a key contributor and facilitator in the monthly S&OP process, including demand‑supply reconciliation, scenario planning, and executive readiness
• Collaborate with Manufacturing, Logistics, and vendor partners to resolve supply issues, improve lead times, and enhance reliability
• Lead supply planning support for new product introductions (NPI), including launch readiness and ramp‑up strategies
• Drive continuous improvement initiatives to enhance planning processes, reduce costs, and improve forecast accuracy and service levels
• Develop and deliver insights, reporting, and presentations to leadership to support strategic decision‑making

• Bachelor’s degree in Supply Chain, Operations, Business, Engineering, or related field
• 5–8+ years of experience in supply planning, production planning, inventory management, or related supply chain roles
• Experience operating in a consumer products environment supporting retail and/or eCommerce channels
• Demonstrated expertise in MRP/ERP systems (SAP, Net Suite, Oracle, or similar)
• Advanced Excel skills (pivot tables, XLOOKUP, data modeling)
• Strong understanding of supply chain fundamentals including inventory theory, lead time management, and demand‑supply balancing
• Experience participating in and influencing S&OP processes
• Proven ability to lead cross‑functional initiatives and influence stakeholders
• Prior experience mentoring or informally leading others preferred
• Bilingual in English and Mandarin preferred

• 100% employer‑paid HMO health care plan
• Voluntary Benefits:
  Dental, Vision, Term Life, Accident, Critical Illness and Pet Insurance
• 401(K) Safe Harbor Plan for your future
• Generous paid time off for work‑life balance
• Growth through training and development
• Fun, engaging work environment