Stephanie Hertzog is Sodexo’s CEO of Energy & Resources – North America.  She has over 20 years of experience in the energy industry and has spent most of her career in services business, focusing on general management, strategy, and sales and marketing. Stephanie started her career as a Process Engineer at Celanese.  She spent several years as an Engagement Manager with McKinsey & Co, a global consulting firm.  After McKinsey, she joined PSC, an environmental services firm in need of a turnaround following the company’s second bankruptcy filing, as Senior Vice President of Strategy.  After PSC became profitable, she joined Exterran, a publicly held oilfield services company.  She held several roles at Exterran as Vice President Sales and Marketing, Vice President Strategy, and Vice President Product Lines. After Exterran, Stephanie was Senior Vice President at Tally Energy Services, a private equity backed oilfield services start-up. Stephanie earned her Bachelor of Science degree in Chemical Engineering from Texas A&M and a Master of Business Administration from Harvard Business School.