Leadership Team

Committed to strategic growth and unsurpassed customer experience.

Lisa Guillaume

Lisa Guillaume

Lisa is the Chief Marketing Officer for Cologix, where she is responsible for the global product and marketing strategy for the Company. Lisa is a B2B line of business leader with over 20 years of experience in product strategy, marketing and development. She has had extensive success in managing business unit P&L and revenue target achievement. Lisa has worked in a range of product and marketing roles at both very large and start-up companies including most recently as Chief Product Officer for Relay Network, an enterprise SaaS provider for B2C mobile communications. Prior to that, Lisa was the Managing Director of the B2B practice at Sterling-Rice Group, VP of CDN Services for Level 3 Communications and VP of Product and Marketing at Digital Globe. Lisa also ran a consulting practice that partnered with Communications Media Advisors, LLC (CMA) on go-to-market planning and execution for technology and cloud services companies. Lisa has a B.S. in Marketing from Virginia Tech and an MBA from American University.

Wayne Dietrich

Wayne Dietrich

Wayne is the Chief Sales Officer for Cologix, where he is responsible for the sales organization, customer advocacy and the company's distribution strategy. Prior to his current role, Wayne was Head of Strategic Alliances at Ciena where he lead partnership strategy, adjacent technology solutions, go-to-market design, and distribution enablement globally. Prior to his position at Ciena, Wayne held various positions at Siemens Enterprise Communications (now Unify), Level 3 Communications, Qwest Communications (now CenturyLink), and Lucent Technologies (now Alcatel-Lucent), AT&T Bell Laboratories, and Bristol-Myers Squibb. He has over 20 years of diverse experience in sales leadership, strategic alliances, operations, business development, channel optimization and go-to-market design & execution across telecommunications, enterprise, logistics & manufacturing, and research & development environments. Wayne holds a bachelor’s degree in Health Physics (Radiation Science) and master’s in Interdisciplinary Telecommunications.

Val Milshtein

Val Milshtein

Val is the Chief Information Officer & Senior Vice President of Network Services for Cologix. He is responsible for leading Product and Process development as well as Systems and Network Architecture. He has over 20 years of management experience providing product and technology solutions within commercial and government sectors. Prior to Cologix he held a number of product development roles at Level 3 Communications where he directed media content, voice & data, and managed services product development teams and led the transformation of the Product Development Management discipline through the adoptions of Agile development methods. Prior to Level 3, Val was the VP of Business Systems Development for Genuity Solutions, a Bell Atlantic - GTE Corp. Internet and Managed Services provider spin-off. He led the development efforts for separation and ultimately successful IPO of Genuity followed by the largest CRM implementation in the industry.

Matt Spencer

Matt Spencer

Matt is the Chief Technology Officer for Cologix. He is responsible for leading engineering and operations for Cologix. Matt has 25 years of experience leading worldwide IT and telecommunications organizations. Matt has served as the Senior Vice President of Global Operations for the Network and Customer Care Centers of Level 3 Communications, as Senior Vice President for Level 3’s IP Network, Voice over IP and Video Engineering and as Director of IT Operations for the University of Colorado Hospital. Matt holds a bachelor’s degree in finance.

Steve Tucker Web

Stephen Tucker

Stephen is the Chief Financial Officer for Cologix, where he is responsible for finance, tax, accounting and treasury. Prior to his current role, Stephen was Chief Financial Officer for FTD Companies, Inc and prior to that, held various financial leadership positions in the telecommunication (AT&T) and media (DIRECTV) industries. Stephen holds a Bachelor of Business Administration, Accounting and Finance from Simon Fraser University.

Brian Cox Web

Brian Cox

Brian is the Chief Operating Officer for Cologix, where he is responsible for Operations, Construction, Commercial Management, Marketing and Strategy. Prior to his current role, Brian was Chief Financial Officer for Cologix Brian and during the course of the past 7 years was a pivotal role in successfully completing: 10 acquisitions, multiple credit facility upsizes and scaling a startup business into an international data center platform. Prior to Cologix, Brian was Chief Financial Officer for i-transfer, a global financial technology company. Brian also had roles with KPMG LLP, providing financial diligence assistance to financial and strategic buyers in high-tech industries, as well as First Data Corporation, where he held acquisition and integration positions. Brian holds a bachelor’s and master’s degree in business administration. He is also a Certified Public Accountant.

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