Management Team

The Secure64 management team consists of leaders from the technology and telecom industries. Secure64 is a privately held software company headquartered in Greenwood Village, Colorado.

Thad Dupper

Chief Executive Officer

Thad was named President and CEO of Secure64 in October 2017. With more than 30 years’ experience in the telecommunications technology industry, Thad has a track record of delivering innovative solutions to leading telecommunications companies.

Thad was Chairman, CEO & President at Evolving Systems (NASDAQ:EVOL) from 2007 until 2016.  Prior assignments include Vice President of Sales and Marketing for Expand Beyond, a wireless software company. He was also Vice President, International Sales and Business Development of Terabeam, where he helped pioneer the use of free space optics with telecommunications carriers around the world. Additionally, he held positions as Senior Vice President of Dun & Bradstreet and Vice President of Teradata, where he oversaw data warehousing solutions for the communication industry.

Thad currently serves on the Board of Trustees of the Colorado Children’s Chorale and the Finance Committee of the Archdiocese of Denver and was awarded a B.S. in Computer Information Systems from Manhattan College.

Mark Beckett

Vice President, Marketing and Product Management
Mark develops and executes product strategy and customer-facing marketing programs at Secure64. He has more than 23 years of experience in product marketing, business development and software engineering, Mark was previously Executive Vice President of Marketing for ChipData, a provider of electronic design automation software. At ChipData, he was instrumental in transforming the company from a service to a product company by launching a portfolio of award winning products that attracted over 20 Fortune 500 accounts within 12 months. He has served in technical, marketing and business development roles for a variety of software and online publishing companies. Mark holds B.S. and M.S. degrees in Mechanical Engineering from Stanford University.

Amanda Constant

Vice President, Engineering
Amanda directs and provides project management for the engineering team at Secure64 with over 26 years experience in software engineering and project management. Amanda holds an A.B. in Political Science, Computer Science and Math from Vassar College and an M.S. in Computer Science from the University of Arizona, Tucson.

Joanne O’Keefe

Vice President, Sales

Joanne manages the global sales organization at Secure64, where she is responsible for account management and strategic business partnerships. Joanne brings over 25 years of experience selling software to telecommunications and internet companies.  Her previous roles include Director of Sales for Telcordia Communications, Evolving Systems and Cvidya. Joanne was also President of Worldwide Computer Solutions, an internet training company.  She holds a Bachelor of Arts in English and Communications with a Business minor from St. Catherine’s University.


Kim Zimmermann

Vice President, Finance

As the company’s VP of Finance, Kim has global responsibility for all financial planning, accounting, tax auditing and procurement. She has more than 25 years of finance, operations and administration experience, and held previous roles at Skyway Cellular, SysKonnect and Solution Partners.  Kim has a B.A. from the University of California, Santa Barbara.