Calero’s Leadership Team

About UsLeadership

Joe Pajer

Joe Pajer, President and CEO

Joe has 35 years of technology industry experience, including more than 20 years in senior executive positions.  Prior to joining Calero, he was President & CEO of Thinklogical, the leading provider of high performance, multiple classification video and data distribution solutions for defense organizations worldwide.  Prior to Thinklogical, Joe was the President & CEO of Vocollect, the leading provider of voice recognition enabled computing solutions for mobile workforces.  Joe has also held executive leadership positions with Marconi, FORE Systems, Compaq Computer and AT&T.

Joe has a Master of Science degree in Management and a Bachelor of Science degree in Civil Engineering, both from Carnegie Mellon University in Pittsburgh.

Justin Estvold, Chief Financial Officer & Chief Administrative Officer

Justin leads Calero’s finance, accounting, and administrative functions. Prior to joining Calero, he was Chief Financial Officer at STATS, the leading sports data and technology company. Prior to STATS, Justin led worldwide operations at K2, a provider of process automation and integrated workflow solutions. He also spent 6 years at Microsoft, where he held global leadership roles in Finance, Sales and Operations. Justin has a Bachelor of Business Administration in Financial Management from the University of North Dakota.

Tripp Cox

Tripp Cox, Executive Vice President of Research & Development

As Executive Vice President of Research & Development, Tripp Cox leads the design and development of Calero’s software products and advanced analytics solutions. Tripp has more than 20 years of experience creating new products and leading technology organizations in the Internet services, cybersecurity, and advanced analytics markets. Prior to Calero, Tripp held technology executive roles at Illuminate360, SunTrust, Damballa, EarthLink, and MindSpring.

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Scott Forbes, Executive Vice President & General Manager, Products

Scott is a seasoned business executive with experience in software and services related to telecommunications operations and applications. With ownership for the full BU P&L, Scott establishes and manages strategic business objectives for sales, business partners, development, service support and delivery. He most recently served as VP Global Services for Coriant, an optical and data products company selling to top 50 global telecom services providers. He also brings significant experience from varied roles at AT&T, Lucent and Alcatel-Lucent.

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Albert Spell, Executive Vice President of Operations

As Vice President of Operations, Albert oversees day-to-day operations to support our growth and profitability, with a focus on strategic planning and goal-setting. He has over 20 years of experience in telecommunications services businesses. Most recently, Albert served as Assistant Vice President at BlueStream Professional Services, a KGP Company. Albert earned a B.S. Degree in Electrical Engineering Technology from Southern Polytechnic State University.

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Andrew Taylor, Executive Vice President of Global Sales

As Executive Vice President of Global Sales, Andrew is responsible for leading Calero’s direct and channel sales and customer success programs. By promoting a culture of collaboration and consultation in all phases of customer engagement, Andrew enhances Calero’s role as trusted advisor and assures outcomes that exceed customer expectations. Previously Andrew served as Vice President of DMI (Digital Management, Inc.), a world-wide, end-to-end mobility company.

David Booker, Managing Director EMEA, Calero Software

David Booker, Managing Director EMEA

Based out of the U.K., David Booker is the co-leader of Calero’s EMEA operations. David brings over 30 years of experience in developing new markets and high-growth organizations within the IT and telecom space.  Throughout his career, he’s held senior leadership roles at Oxygen8 UK, Mobixell Networks EMEA and Comverse Northern Europe. David recently joined Calero through the acquisition of Veropath where he served as the President and CEO.  He is now part of the Calero leadership team.

Ron Rijkenberg, Managing Director EMEA

Based out of the Netherlands, Ron co-leads the Calero EMEA operations. With more than 25 years of helping customers navigate the telecom and expense management industries, he brings a wealth of insight and knowledge around the highly complex European markets.  As one of the founding fathers, and former CEO, of A&B Groep, Ron joined Calero as part of our leadership team upon Calero’s acquisition of A&B Groep.

Scott Davis

Scott Davis, Head of Marketing | Vice President

Scott Davis is the vice president and head of marketing. With over 18 years in the software and communication industries, he is passionate about impacting the world and our lives, through technology. Davis can often be found as a regular contributor to various industry blogs, white papers and other thought leadership channels on the topics of software, analytics and business intelligence.

Davis held leadership positions at SAP, and is a graduate of the University of South Carolina.

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Larry Foster, Product Strategy & Vision

Larry Foster, Product Strategy and Vision, integrates market knowledge, strategic insight and a strong user focus to help our organization create cutting-edge products that deliver exceptional value for our customers. He also oversees our customer product advisory function. Larry held previous technology leadership positions as IT Director, Business Consultant, VP of Operations and VP GM of PAETEC Software Corp.

In March of 2015, Larry was inducted into the Telecom Expense Management Industry Association (TEMIA) Hall of Fame.