Global procurement leader known for transforming procurement into a strategic source of value and innovation.

Tim Riordan is an accomplished global procurement and supply chain executive known for transforming procurement into a strategic driver of value, innovation, and performance. As Director of Procurement for WIKA USA, he leads a team managing $135 million in annual spend and delivering multimillion-dollar savings. Previously, Tim held senior leadership roles at Ultimate Software and Interface, and began his career in Arthur Andersen’s Supply Chain Consulting practice. A frequent speaker on procurement, transformation, sustainability, and supplier innovation, Tim is a recipient of the U.S. EPA SmartWay Excellence Award and holds an MBA from the University of Connecticut and a B.S. in Mechanical Engineering from Villanova University.

Melissa Collier
Director of Change Leadership, Georgia-Pacific, LLC

Speaker Bio

Change management, business transformation, and talent development executive with more than 25 years of experience. 

Melissa Collier is an accomplished change management, business transformation, and talent development executive with more than 25 years of experience helping major organizations navigate large-scale change and build stronger leaders and teams. Her career includes leadership roles with Georgia-Pacific, Cox Automotive, Coca-Cola, and The Home Depot. At Georgia-Pacific, Melissa leads organizational change management for major digital transformation programs involving SAP S/4HANA, Salesforce, and other integrated systems impacting more than 30,000 employees and customers; she has also built and led change teams supporting a $400+ million transformation program. Previously, as Vice President of Global Learning at Cox Automotive, she led talent development for 34,000 employees, and at Coca-Cola Refreshments she managed learning for a major SAP-based implementation reaching more than 40,000 employees across 350 locations. Melissa holds a Master of Education in Adult Learning and a B.S. in Management and is a PROSCI Certified Change Practitioner, Lean Six Sigma Green Belt, Certified DiSC Workshop Facilitator, and DDI Certified Facilitator. She is also the author of Lead Like A Boss and is active in mentoring and leadership development in the Atlanta community.