Purchasing Inventory Manager Jobs in California (NOW HIRING)

Los Angeles, CA | Full-Time
Competitive Compensation + Comprehensive Benefits

Plastpro is a leading manufacturer of high-quality fiberglass entry doors and building products, serving customers across North America through a complex manufacturing and global supply chain network.

We are seeking an experienced Senior Purchasing Manager to lead procurement, purchasing, inventory management, and supplier strategy across the organization.

This role will be responsible for ensuring materials and services are sourced competitively, inventory remains optimized, supplier performance is closely managed, and manufacturing operations have the materials they need to run without interruption.

Given Plastpro's international supplier relationships, Mandarin Chinese proficiency is strongly preferred, particularly for candidates who have experience working directly with suppliers and manufacturers in China.

This is an ideal role for an experienced procurement and supply chain leader who combines strong strategic sourcing and negotiation skills with a hands-on understanding of purchasing, inventory, and manufacturing operations.

Reporting directly to the President of Plastpro, the Senior Purchasing Manager will lead supplier strategy, purchasing operations, inventory optimization, and supply chain improvement initiatives.

You’ll work closely with Operations, Manufacturing, Planning, Finance, Engineering, Sales, and Warehouse teams while also developing and managing relationships with domestic and international suppliers.

We are particularly interested in candidates who have experience sourcing from China and working directly with Chinese-speaking suppliers. Mandarin proficiency will be highly valuable in supplier negotiations, relationship management, issue resolution, and day-to-day communication.

This is a highly visible leadership role with direct influence over cost, inventory, supplier performance, and production continuity.

• Develop and execute procurement strategies aligned with business and manufacturing objectives.

• Source, evaluate, negotiate with, and select domestic and international suppliers based on cost, quality, service, capacity, and delivery performance.

• Lead negotiations for pricing, contracts, payment terms, warranties, and service agreements.

• Build and maintain long-term strategic supplier relationships, including relationships with China-based and other international suppliers.

• Communicate directly with suppliers to resolve pricing, quality, lead-time, capacity, and delivery issues.

• Identify opportunities for supplier consolidation, alternative sourcing, and cost reduction.

• Manage purchasing activities for raw materials, packaging, maintenance supplies, capital equipment, and indirect materials.

• Review and approve purchase requisitions and purchase orders.

• Monitor supplier lead times and ensure materials arrive according to production requirements.

• Resolve shortages, damaged materials, invoice discrepancies, pricing issues, and supplier-related problems.

• Develop inventory-control strategies that balance material availability with inventory carrying costs.

• Monitor inventory accuracy, inventory turns, safety stock, obsolete inventory, and slow-moving inventory.

• Lead cycle-count and physical-inventory programs.

• Partner with Warehouse and Operations teams to improve inventory accuracy and material flow.

• Coordinate with production planning to ensure sufficient material availability.

• Identify supply-chain risks and develop contingency sourcing strategies for critical materials.

• Monitor supplier capacity, logistics performance, and on-time delivery.

• Work with logistics providers to optimize transportation costs and delivery schedules.

• Develop supplier scorecards covering cost, quality, delivery, responsiveness, and service.

• Conduct regular supplier business reviews and drive corrective actions where performance falls short.

• Develop purchasing budgets and monitor procurement spending against plan.

• Lead cost-reduction and cost-avoidance initiatives.

• Analyze purchasing trends, spending patterns, inventory valuation, and procurement performance.

• Supervise procurement, purchasing, and inventory personnel.

• Establish departmental goals, KPIs, and performance expectations.

• Coach and develop team members while promoting accountability and continuous improvement.

• Ensure procurement activities comply with company policies, financial controls, applicable regulations, and ethical purchasing standards.

• Bachelor’s degree in Supply Chain Management, Business Administration, Operations Management, Logistics, Finance, or a related field.

• Master’s degree preferred.

• 7–10+ years of progressive procurement and supply chain experience.

• 3–5+ years of leadership experience within purchasing, procurement, or supply chain.

• Proven experience managing large-scale procurement operations and strategic supplier relationships.

• Strong background negotiating high-value supplier contracts, pricing, payment terms, and commercial agreements.

• Demonstrated success implementing cost-reduction and strategic-sourcing initiatives.

• Experience managing purchasing and inventory planning within a manufacturing environment strongly preferred.

• Experience working with international suppliers and global supply chains.

• Mandarin Chinese proficiency strongly preferred, particularly professional/business proficiency sufficient to communicate directly with suppliers.

• Experience working directly with suppliers or manufacturers in China highly preferred.

• Ability to participate in supplier discussions, relationship management, issue resolution, and negotiations in Mandarin is a significant advantage.

• Strong understanding of supply chain planning, procurement best practices, and inventory optimization.

• Experience with ERP/MRP systems, such as Friedman, SAP, AS400, Microsoft Dynamics, or similar platforms.

• Strong analytical and financial skills, including cost analysis, purchasing trends, and budget management.

• Advanced proficiency with Microsoft Excel.

• Excellent negotiation, communication, and relationship-management skills.

• Ability to manage multiple priorities in a fast-paced manufacturing environment.

• CPSM – Certified Professional in Supply Management

• CSCP – Certified Supply Chain Professional

• PMP – Project Management Professional

• Six Sigma Green Belt or Black Belt

Procurement & Global Strategic Sourcing

• Strategic sourcing

• Domestic and international procurement

• China-based supplier relationships

• Supplier selection and qualification

• Contract and pricing negotiation

• Cost reduction

• Supplier consolidation

• Supplier relationship management

Inventory & Planning

• Inventory optimization

• Safety-stock management

• Inventory turns

• Demand planning

• Cycle counting

• Obsolete inventory reduction

Supply Chain

• Global supply-chain management

• Supplier capacity planning

• Supply-chain risk mitigation

• Contingency sourcing

• Logistics coordination

• Material availability

• Lead-time reduction

Financial & Analytical

• Purchase Price Variance (PPV)

• Cost analysis

• Budget management

• Procurement spend analysis

• Inventory carrying cost

• Forecasting

Systems

• ERP / MRP platforms

• Friedman

• SAP

• AS400

• Microsoft Dynamics

• Advanced Microsoft Excel

Success in this role will be measured across:

• Purchase Price Variance (PPV)

• Cost savings achieved

• Supplier on-time delivery

• Supplier quality performance

• Inventory accuracy

• Inventory turnover

• Inventory carrying cost

• Purchase-order cycle time

• Stockout rate

• Supplier lead-time reduction

• Procurement budget performance

• Supply-chain service level

• Lead procurement strategy for a complex manufacturing organization with a global supplier network.

• Report directly to the President of Plastpro and have significant visibility across the business.

• Build and strengthen strategic relationships with domestic and international suppliers.

• Use your Mandarin language skills and China sourcing experience in a role where they provide real business value.

• Influence sourcing, inventory, supplier performance, cost control, and production continuity.

• Work cross-functionally with Manufacturing, Operations, Planning, Finance, Engineering, Sales, and Warehouse teams.

• Lead and develop a procurement organization with direct impact on company performance.

• Competitive compensation plus comprehensive benefits.