David Kelly, Founder and Managing Director

David Kelly is the founder and Managing Director of Xenon Group and brings nearly 25 years of public and private sector operational experience.
David is the former VP and Global Lead for Service Delivery at Brightstar, a $10B provider of supply chain services.

He began his career in the private sector with Accenture after serving 5 years as an Intelligence Officer in the U.S. Marine Corps. During his 11-year tenure with Accenture, David led a variety of transformational supply chain, procurement and business operations programs.  David’s industry experience includes: private equity, telecommunications, retail, healthcare, energy, media and high tech, government, consumer packaged goods and homebuilding products.

His international work experience includes locations such as Australia, Hong Kong, Italy, Japan, Korea, Mexico, Qatar and Spain.  He holds an MBA from the University of Colorado and an APICS Certification in Production and Inventory Management.

David lives in Denver with his wife and two children and enjoys quality family time and just about anything outdoors.

Fred Bentley, Senior Advisor

Fred currently serves as the President, Chief Executive Officer and Board member of DexKo Global.  He has significant experience running global operations and growing businesses while working with world-class companies.

Prior to joining DexKo, Fred served as the CEO of Maxion Wheels, a $2.4 billion global automotive equipment supplier and the world’s largest wheel manufacturer. Before holding the CEO role, he led Maxion’s $1.2 billion European operations. He has previously held the position of COO and President of International Operations at Hayes Lemmerz, leading the company’s sale (to Maxion) and the divestiture of non-core businesses while significantly globalizing the core business.

Fred’s experience also includes six years running an international business with significant operational experience at Honeywell/Allied Signal and seven years in operations, finance and strategy at Frito Lay. Fred has a BS in Industrial Engineering from the University of Cincinnati and attended the Harvard Business School Advanced Management Program.

In his spare time, Fred enjoys traveling globally with his wife and two children and skiing the high country of Colorado.

Mark Tefakis, Senior Advisor

Over the course of his 30+ year career, Mark has held leadership positions in Sales, Sales Operations, and Global Field Enablement at industry-leading companies (People.ai, Sprinklr, Fuze, PTC, BMC Software, P&G). Most notably, Mark has designed, deployed, and managed a leading-edge Enablement and Performance framework, based on a 5-pillar model, that has been the foundation and catalyst to driving consistent productivity and business impact from cross-functional GTM teams. When asked about key observations and lessons learned along the way, Mark passionately contends that everyone has an opportunity to be wildly successful as long as they embrace a growth mindset, believe in themselves, focus on the fundamentals, and strive each day to make themselves and those around them better. At the core is a fixation and unwavering commitment to culture, clarity, teamwork and disciplined execution. 
This should be the #1 motivation for companies, leaders, and GTM organizations.

A graduate of the University of Cincinnati (BA – Economics), Mark resides in Charlotte, North Carolina with his wife and two daughters, enjoying an occasional round of golf, family summer trips to Lake Michigan and supporting local charities.

Darin Powers, Senior Advisor

Darin Powers serves as President and Chief Operating Officer for NT Concepts, a mid-tier firm that delivers advanced technology solutions to the federal government. Additionally, he leads Verum Partners, a niche growth and leadership consultancy.

Formerly the Chief Operating Officer of Toffler Associates, a strategy consultancy, Darin brings his talents to both commercial and governmental organizations, enabling clients to excel in our rapidly changing global marketplace. Prior to Toffler Associates, Darin served in executive and director roles for both DynCorp International and Northrop Grumman and held multiple command and staff roles as a Marine Corps officer. He now actively serves in Board of Director and Senior Advisor roles.

Darin is a catalyst for positive change with a passion for investing in others and launching their success. He has nearly 30 years of experience leading corporations and governmental organizations through large-scale transformations, generating significant EBITDA value in the process. Darin has repeatedly been called upon to envision and articulate new directions, translate strategy into effective operations, launch start-ups, accelerate expansion and recover and optimize businesses.

A business-minded technologist at heart, Darin possesses an MS in Space Systems from the Naval Postgraduate School, a BS in Electrical Engineering from Drexel University and has taken executive education at the business schools of both the University of Chicago and the University of Virginia.