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Our Management Team 

EGD_Jack_DeMao.jpgJack DeMao, CEO

Jack is an accomplished executive with experience in a variety of industries and regions of the world. Previously serving as president of Chicago Pneumatic Tool Company's Automotive division after joining the company as a vice president of sales and marketing, Jack later joined Desoutter LTD, a 500-employee subsidiary of Swedish multinational Atlas Copco AB that was based in the United Kingdom.

In 2001, he became president and CEO at CC Dickson Co., a Charlotte, NC-based wholesaler of HVAC parts and equipment with 110 stores throughout the Southeast. In 2006, he was named "Man of the Year" by a trade publication in the HVAC industry, in recognition of the success in turning around CC Dickson.

Jack joined Electric Guard Dog as CEO in 2007 and has since lead the effort to build a platform for growth and the drive to provide a higher level of satisfaction within our customer base. In 2016, he was named a finalist for the EY Entrepreneur Of The Year® Award in the Southeast.

An MBA graduate of Harvard, Jack specializes in helping companies build infrastructure and accelerate growth. He has a permanent home in Charlotte, NC, with his wife. He is an avid participant in endurance sports and instructor for the Harvard Business School Club of Charlotte's Management Development Program.


Nathan-Leaphart.jpgNathan Leaphart, CPA/Chief Financial Officer

Nathan joined Electric Guard Dog in 2007 and is responsible for finance and accounting, human resources, legal and compliance activities, and advising management and the Board of Directors on corporate strategy.  Nathan has helped lead the transformation of Electric Guard Dog from a family-run business to a metric-driven, investor-run business.

 A CPA with a bachelor's degree in Business Administration/Accounting from the University of South Carolina, Nathan previously held roles in public accounting at McGregor and Company and Elliott Davis, LLC. He also served as chief financial officer of Glassmaster Company, a publicly held manufacturer based in South Carolina.

In 2007, he was named by The State newspaper to the "20 Under 40" list of "Rising Stars in the Midlands". Nathan lives in Chapin, SC, with his wife and two daughters.


Randy-Mullis.jpgRandy Mullis, Director — Field Operations

Randy is the son of Electric Guard Dog founder Bill Mullis. He began working in the security industry in 1982 as part of the Sentry Dogs family business that preceded Electric Guard Dog.

He joined the U.S. Air Force in 1986 and served until 1990. During his time in the Air Force, he worked with specialized missiles, including nuclear cruise missiles. He returned to help found Electric Guard Dog in 1991.

He has held various roles over his time with the company, serving as part of the early installation and service teams, and currently responsible for field operations, including our 40+ service technicians and 25+ install crews, nationwide. Randy lives in Chapin, SC, with his wife and two sons.


Joseph “J-Bury.jpgJ” Bury, Director — Technology

J joined Electric Guard Dog in 2008 and is currently responsible for the Technology department, overseeing the company’s efforts in providing greater integration, including security technologies such as access control, video and intrusion detection. J also oversees the company’s ERP system and other initiatives aimed at enhancing customer fulfillment and EGD’s premier electric fence system with advancing technology, including “machine to machine” communication.

After receiving a degree in Political Science from Syracuse University, J worked in a variety of high-tech positions, including ADP's Brokerage Industry Services Group, based in Mount Laurel, NJ, where he rolled out new CRM/trading software for top U.S. brokerage firms. After that, J worked for Prophet 21, implementing a start-up, state-of-the-art Windows and SQL-based application for the distribution industry.

In 2001, J joined CC Dickson as director of IT, where he transformed the company's handwritten invoice, no-inventory tracking system to a leading, technology-based HVAC/R distribution organization. Having successfully modernized their technology, J became the new director of materials. J lives in Rock Hill, SC.


Michael-PateMichael Pate, Director of Business Development/Compliance

Michael joined Electric Guard Dog in 2008 and is responsible for all code compliance west of the Mississippi.

Michael has a rich and varied sales, marketing and entrepreneurial background. In 2006, Michael formed "The Preserve at 5 and 20", an environmentally sensitive residential development and acted as developing partner.

Prior to that Michael served for four years as vice president of marketing and sales for Supply Chain Solutions, a provider of contracted third party labor services. He has held several other positions in sales, management and marketing in the entertainment, communications and medical fields.


Cindy WCindy-Williams.jpgilliams, Director of Business Development/Compliance

Cindy joined Electric Guard Dog in 2008 and is responsible for code compliance east of the Mississippi.

Prior to joining Electric Guard Dog, she had a 25-year career with GTE/Verizon Communications, where she held various positions in Computer Operations, Wholesale Ordering/Billing Operations and IT Requirements before retiring in 2007.

A lifetime resident of the Raleigh, NC area, Cindy is a graduate of the University of North Carolina with a bachelor’s in Business Administration. Cindy lives in Cary, NC.


EGD-Mike_Dorrington.jpgMichael Dorrington, Vice President of Sales and Marketing

Michael came to Electric Guard Dog with 18 years’ experience in leading sales teams to success. While at Valassis, a leader in intelligent media delivery, he served as vice president of sales, taking his product development and sales teams from $0 to $92MM in annual sales. He managed a diverse project portfolio, including new product development, CRM implementation, data and analytics programs, as well as sales leadership training.

In a prior role as director of sales for Cintas Corporation, Michael led the hiring, training and development of sales teams charged with growing the company’s key business units for the top sales region.

Michael holds a BA in communications/public relations from Michigan State University with formal sales training in both the Challenger and Requirements Based Selling methods. He is a native Midwesterner and avid runner, and recently relocated to the Columbia, SC area with his wife, son and daughter.

Josh Ott, Director — Insides Sales Josh Ott

Josh joined Electric Guard Dog in 2012 and is currently responsible for managing the company’s growing Inside Sales department. Since joining Electric Guard Dog, Josh has twice broken the monthly sales record and quickly moved up the internal ladder. Josh was first promoted to senior inside account executive in 2014 and then to inside sales manager in 2015.

Josh has extensive sales and marketing background, including prior experience with Bell Aviation, where he was awarded “Rookie of the Year” in 2005, and ADT.

Josh is a graduate of Midlands Technical College and currently lives in Batesburg-Leesville, SC, with his wife and their four children.


Joe QuesenberryJoseph Quesenberry, Regional Director of Sales, Southeast

Joe came to Electric Guard Dog with a proven track record of high-level performance in the financial, industrial and medical industries. He has won numerous leadership awards throughout his career and most recently served as a district sales manager for G&K Services in West Central Florida.  

Joe’s team-first approach, sales acumen and strong coaching methodology are instrumental in his role as regional director of sales, covering Electric Guard Dog's Atlanta, North Carolina, South Carolina and Florida markets.

Joe holds a political science degree from Lee University and an MBA from the University of South Florida. He recently relocated to Atlanta with his wife and two daughters. 

 CryCrystal Gurtisen, Director of Installationstal Gurtisen, Manager of Installation

Crystal joined Electric Guard Dog as a west coast project manager in 2012, advanced to senior project manager in 2014 and then to manager of installation in 2016. She brings extensive background in installations, operations, sales and project management — not to mention an entrepreneurial spirit and ability to build rapport, which come naturally as an owner of a commercial and residential janitorial business of nine years.

When Crystal is not overseeing the project management teams that work with the install crews, technicians and existing customer accounts, she’s busy maintaining contractor relationships, addressing existing customer needs and helping build business at Electric Guard Dog. She also helps manage inventory, logistics, scheduling and technical support.

Crystal is a graduate of Southern Wesleyan University and holds a Bachelor of Science degree in business management as well as a degree in accounting and marketing. Crystal lives in Lexington, SC, with her husband, two daughters and son.


Jennifer Jennifer Dorward, Customer Service ManagerDorward, Customer Service Manager

Jennifer joined Electric Guard Dog in 2014 as a customer service representative, was promoted to technical support analyst soon after, and now manages the company’s growing Customer Service department.

At Electric Guard Dog, customer service encompasses a wide array of skills ranging from account management to technical support and system programming, all of which are strengths that Jennifer brings to the team. She has over 20 years in customer service and has spent the past 10 years serving in a technical environment. In her prior role with a global software sales firm, she achieved the Quarterly Top Performer accolade on four occasions.

A native from Allentown, PA, Jennifer earned her A+ certification and Server Administration degree from Midlands Technical College and currently lives in Lexington, SC, with her husband and three children.