:: We Are PETEX

Sandra LosoyaSandra Losoya, Manager of Operations and Shared Services, brings extensive experience in customer service, operational management, people management, and program management to her role at PETEX. As Manager of Operations, Losoya’s primary responsibility is to ensure organizational effectiveness by providing leadership of PETEX’s operations. She also manages Shared Services, which consists of the Accounting, Sales, and Warehouse departments. Prior to PETEX, Losoya was Associate Director for the Executive MBA Program at The Wharton School of the University of Pennsylvania in San Francisco, California, responsible for operational & program management. Prior to that, Losoya managed operations at The Wharton School’s East Coast Campus in Philadelphia, Pennsylvania.

Chris Parker

Chris Parker, Editor at PETEX, applies his editorial expertise in assisting PETEX with new publications and updates. In previous roles at Houghton Mifflin Harcourt, Parker was responsible for writing, editing, and proofreading a wide variety of materials including textbooks, web-based educational software and sites, teacher’s editions, and fiction and nonfiction texts. He has also edited and copyedited highly technical academic papers.

Bernardo Navarro

Bernardo B. Navarro, Editor at PETEX, brings an extensive background in editorial project management. At Houghton Mifflin publishing company, he managed more than 150 freelance writers, editors, and reviewers on various mathematics-related publishing projects. He began his career as a fourth-grade teacher with Teach For America and also served in the U.S. Foreign Service at the U.S. Embassy in Beijing, China. He is currently pursuing Project Management Professional (PMP) certification.

Lisa Dassler

Lisa Dassler, Training Specialist III, comes to PETEX after serving as a Program Coordinator for Research Education at the University of Texas M. D. Anderson Cancer Center. She has many years of experience coordinating and facilitating training for both faculty and research staff. She also has experience creating instructor-led training and has frequently presented to staff on research policies and procedures.

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