Tim D. Shadburn



Tim D. Shadburn, Chief Executive Officer, founded Adtech in 1999 and negotiated a successful merger with GESI in 2004 to create Adtech Global.  A privately-held, profitable organization from the start, the company has grown to approximately $50 million in revenue in a ten year period.  With over 18 years of corporate management and business-to-business experience, Mr. Shadburn has direct profit and loss responsibility along with all aspects of the organization’s policies, objectives and initiatives.   During this tenure, he led the company’s expansion around the globe in London, Hong Kong, Munich, Sydney, and Toronto. Prior to Adtech Global, Mr. Shadburn held executive management positions with General Electric in business units including Power Systems, Transportation Systems, GE Corporate and GE Capital.  While at GE, Mr. Shadburn graduated from GE’s prestigious management program.  A graduate of Georgia Institute of Technology in Atlanta, he earned his B.S. in Mechanical Engineering in 1993 with honors.

Ric Gray



Ric Gray has more than 25 years of operations, sales, and marketing executive leadership experience building world class teams in the high-tech arena. An accomplished leader, his vision and expertise have driven notable growth in sales and profits in the telecom, computer, and software business sectors. Mr. Gray has worked extensively in the technology and telecom sectors for Hewlett-Packard and Acterna, serving as the President of Acterna Canada as well as the Sr. Director of Emerging Accounts for North America. Mr. Gray has also served in various executive roles for several start-ups, including COO for Emergency Visions, providing software and consulting services to emergency response and disaster relief organizations. He has served on the Board of Directors of the Canadian Wireless Trade Association and currently serves on the Board for TKE of Georgia, Inc., Swapsidy Inc., Service Alert Inc., and TAG Education Collaborative. In addition, he volunteers his time to assist several non-profits including the Canadian and American Cancer Societies, Cap Venture Mentor Program, and the Georgia Tech Mentor Program. Mr. Gray holds a Bachelors of Industrial and Systems Engineering degree from the Georgia Institute of Technology.

Mark Blount


Vice President, Marketing

Mark Blount has over 25 years of marketing and sales management experience with Fortune 100 corporations as well as start-up/medium-sized companies in the technology and software sectors. Mr. Blount began his career with AT&T in 1983 and later held marketing/sales leadership positions at BellSouth, ExecuTrain, Alogent, Home Wireless Networks, Emergency Visions, Brightree, and mBLAST. Mr. Blount has significant brand marketing, direct marketing, and demand generation experience and has developed comprehensive programs for marketing metrics, market segmentation, and extending product life-cycles. Mr. Blount has managed and supported sales/marketing channels across the globe, directed a national group of telemarketing centers, and developed partnerships with key channel partners and OEM manufacturers worldwide. Mr. Blount received an undergraduate degree from The University of Georgia, and he earned an MBA in Marketing from Mercer University with national academic honors. He served as Vice President of The Technology Marketing Association of Georgia 1999-2005; and is Executive Director of The Herring Foundation of Hope, a non-profit organization which assists hundreds of cancer patients annually across the USA.

Marcus Kellman


Vice President, United Kingdom

Marcus Kellman has 14 years of experience in the unified communications sector working within technical, sales and leadership roles throughout his career. Prior to joining Adtech Global, Mr. Kellman worked at MiTech, GMAC RFC, Azzurri and Annodata serving as engineering supervisor, presales consultant, and technical service manager. Mr. Kellman has extensive experience in Cisco routing,switching and security also ShoreTel telecommunications. In Mr. Kellman’s spare time he enjoys time with his family, as well as football and golf.

Joel F. Richardson


Vice President, Services and Support

Joel Richardson brings a wide breadth of experience and knowledge to the team including experience in the Financial, Manufacturing, Logistics, Government, and Software industries.  His experience and talents have brought opportunities for multiple executive positions in small startup companies as well as hyper growth, well-established companies.  Mr. Richardson brings a 360 degree view to the customer experience having served in Sales, Business Development, Marketing and Services throughout his career.  While at Witness Systems, Mr. Richardson served as Director of Customer Care and was instrumental in bringing two fold growth increases to the company.   Mr. Richardson implemented world class service and consulting strategies at Wren Solutions, Recordant and SalesLinx Solutions and most recently led the Unmanned Systems Division of Applied Systems Intelligence to bring innovative and life-saving software products to market for the US Military.  Prior to that, Mr. Richardson held key roles as VP of Marketing, VP of Business Development, and VP of Client Services at various SMB companies related to software, services, and security. Mr. Richardson has served on the Board for the Atlanta Management Society and holds a Bachelors of Industrial Engineering from Arizona State University.  He now makes his home in Atlanta with his wife and three children.

David Ash


Vice President, Sales - Americas

With over 25 years of sales and business development experience, David Ash brings his leadership skills to Adtech Global to guide and grow the internal and external sales teams. Mr. Ash began his sales career in radio with WPAR in Parkersburg, WV and moved quickly into a variety of sales leadership roles in public and private organizations including The Hartford, Dexel Systems, MSI Solutions, Eclipsys Corporation, and Wolters Kluwer Health. Sales teams led by Mr. Ash have sold web-based applications, clinical decision support solutions, database management tools, and financial based applications in and out of the healthcare marketplace. Possessing an entrepreneurial spirit, he once owned and operated a popular sports-themed restaurant in Roswell, GA. Mr. Ash believes a winning sales culture is based on a passion for excellence and personal accountability and seeks to instill those values in the salespeople he directs. Now residing in Atlanta, Mr. Ash holds a B.A. in Political Science from The Ohio State University.



Vice President, Sales United Kingdom

With over 15 years of experience selling communications solutions, Paul Turrell plays an integral role in driving the United Kingdom sales strategy. With a background in working as both a Tier 1 Network Provider, as well as multiple resellers, Mr. Turrell has a complete knowledge of leading IP Telephony manufacturers, data connectivity and general telecoms products. Mr. Turrell has also spent 5 years running his own profitable business, continually improving his technology skillset.

Nik Moissiadis


Vice President, Business Development

Nik Moissiadis is a co-founder of Global Embedded Solutions (GESI), a successful business that he and his partners merged with Adtech Global in late 2004.  Prior to starting GESI, Mr. Moissiadis led Engineering, Quality and Program Management teams and initiatives for Mass Memory Systems, DTx and Gain Systems.  In his 12 years with Adtech Global, Mr. Moissiadis has managed the company’s Engineering and Quality organizations, as well as Operations including Manufacturing, Supply Chain Management, Client Care and Professional Services.  Between 2009 and 2011, Mr. Moissiadis led the acquisitions of key technology from Steelbox Networks and Telindus Surveillance Solutions as well as the management of Adtech Global’s Steelbox division, focusing on software development, sales and marketing of the company’s line of products into the global physical security and surveillance sector.  Mr. Moissiadis studied Computer Science and Mathematics at the University of Central Florida.  Mr. Moissiadis is the proud father of two teenage children.

Michael Douglas


Director, Finance

With over 20 years in accounting and finance experience in a wide variety of industries including manufacturing, distribution, media and advertising, IT equipment and software, Michael Douglas has been the Director of Finance at Adtech Global for over 7 years.  Mr. Douglas received his CPA in 1995 after receiving his Bachelor of Business Administration from Georgia State University and a Masters of Business Administration from the University of Georgia.  Mr. Douglas enjoys playing bass in Genesis Praise Band at Cannon United Methodist Church and is a member of Phi Kappa Phi and Beta Gamma Sigma societies.

Andy Tourville


Director, Engineering

Andy Tourville has 22 years of experience in integration, IT, operations and engineering. Throughout his eight years at GE Capital IT solutions, he received his Six Sigma Green Belt certification while holding operational responsibilities throughout multiple acquisitions. Mr. Tourville also founded Tomorrow’s Solutions, Inc., and worked as a SAP business/systems consultant. He has since been with the Adtech Global team for 11 years demonstrating expertise in sales, professional services, operations, engineering, production, application development and quality. Mr. Tourville’s excellence in engineering is apparent through his proven track record in developing superior customer solutions.


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