Bücher von Jonathan O'Brien

Jonathan O'Brien is the CEO of Positive Purchasing Ltd, the international procurement and negotiation consultancy and training provider. With over 30 years of experience working in purchasing, he has worked all over the world to help global organizations increase their negotiation and purchasing capability through training, education and working directly with practitioners and executive teams to drive in the adoption of negotiation and other strategic purchasing methodologies. He is also author of Supplier Relationship Management, now in its second edition, The Buyer's Toolkit and Category Management in Purchasing, now in its fourth edition, all published by Kogan Page.