Jonathan O'Brien

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Negotiation for Procurement and Supply Chain Professionals Negotiation for Procurement and Supply Chain Professionals
Negotiation for Procurement and Supply Chain Professionals
2025年
Category Management in Purchasing Category Management in Purchasing
Category Management in Purchasing
2024年
Sustainable Procurement Sustainable Procurement
Sustainable Procurement
2023年
Supplier Relationship Management Supplier Relationship Management
Supplier Relationship Management
2022年
Category Management in Purchasing Category Management in Purchasing
Category Management in Purchasing
2019年
The Buyer's Toolkit The Buyer's Toolkit
The Buyer's Toolkit
2017年