
Carl Russo
President and Chief Executive Officer
Roger Weingarth
Executive Vice President and Chief Operating Officer
Andy Lockhart
Senior Vice President, International Sales and Marketing
John Colvin
Senior Vice President, North American Sales and Marketing
Mark Dressler
Vice President, Major Account Sales
Nathan Harrell
Vice President, National Account Sales
Ken Grelck
Vice President Regional Sales, East and Canada
Skip Hirvela
Vice President Regional Sales, West
David Seda
Vice President, Field Marketing
Omar Ramadan
Vice President, Global Customer Services
Michael Ashby
Executive Vice President and Chief Financial Officer
Kevin Pope
Senior Vice President, Product Development
Todd Ortberg
Senior Vice President, Business and Market Development
Tony Banta
Senior Vice President, Global Manufacturing and Supply
Mehdi Bradaran
Vice President, Product and China Operations
Robert Balsamo
Vice President, Product Strategy
Miguel Alonso
Vice President, Software Products
Jill Von Berg
Vice President, Information Technology
Tish Rutledge
Vice President, Talent and Culture

Michael Ashby
Executive Vice President and Chief Financial Officer
Michael Matthews
Chief Corporate Development Officer for AGT International GMBH
Carl Russo
President and Chief Executive Officer
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Omar Ramadan, Vice President, Global Customer Services
Omar is vice president of global customer services for Calix. He has over 15 years of customer service experience in the networking and telecommunications industries. Omar oversees all aspects of customer support, training, documentation, and web-based tools. Prior to joining Calix, Omar was with Advanced Fibre Communications (AFC) working in a number of support-related positions, most recently as director of technical services. At AFC, Omar was responsible for building a technical organization that supported over 750 North American service providers. Before AFC, Omar managed installation activities of outside plant loop electronics at DSC (now part of Alcatel). Omar earned a BS in electrical engineering from Texas A&M University.
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