Executive Management Team

As President and Chief Executive Officer, Bret leads the CallTower team in delivering integrated best-of-breed communication solutions.

Bret has more than 25 years of experience as a senior financial and operational manager and investor. Prior to CallTower, Bret worked in senior, domestic and international, financial and operational roles at Symantec, Informix, Alta Vista, Portal Software, NetManage and JDA Software. Bret has also assisted several technology companies in various CXO and board positions and as an investor through England Consulting and Capital Group. He started his career as a Certified Public Accountant working for KPMG and Deloitte & Touche. Bret has significant experience with all aspects of mergers and acquisitions and has been involved in over 50 transactions in excess of two billion dollars.

Bret has a Bachelor of Science in Accounting Weber State University, has a Master of Science from Golden Gate University and has completed Stanford Business School’s Executive Education program.

As the Chief Revenue Officer at CallTower, William Rubio exemplifies proficiency in strategic planning, executive leadership, and technological innovation. His career spans over 25 years in the global telecommunications, IT, Cloud industry and M&A space, showcasing his vast experience. His forward-thinking leadership and novel approach to the UCaaS, CCaaS, and Collaboration sectors have been instrumental in advancing CallTower’s standing among the industry’s foremost solution providers.

William’s career is marked by exceptional revenue growth achievements in both emerging and mature markets. His unique ability to forecast industry trends and business development has enabled him to capture opportunities, foster alliances, and propel start-up ventures into competitive positions. His technical proficiency extends to VoIP, Cloud solutions, wholesale, IT, and operations, which he leverages alongside his passion for strong partnerships and quality solutions.

Before joining CallTower, William held pivotal roles in leading EarthLink’s Nationwide Hosted Voice rollout in the indirect partner community, serving as Vice President of Sales at STS Telecom, and working with renowned companies such as AT&T and XO Communications.

As Chief Financial Officer, Human Resources and Training, Shawn is responsible for all financial activities at CallTower. This includes managing the accounting and billing teams at CallTower. Shawn is also responsible for FP&A activities, financial reporting, equity administration, tax and regulatory compliance and managing our external audit. Shawn also oversees all HR and Training functions within CallTower. This includes overseeing payroll, employee benefits administration, employee onboarding and recruiting as well as internal and external training efforts. Shawn supports employees’ desire to continually improve, learn and grow, so the company can be known for its expertise.

Shawn has over 10 years of accounting and finance experience to CallTower. He is an active Certified Public Accountant with extensive experience in accounting and finance. Shawn joined CallTower from public accounting in the audit practice of Ernst & Young. His time in public accounting focused on auditing the financial statements and internal controls of large public technology companies in the San Francisco Bay Area. Shawn has extensive experience with accounting and finance processes, procedures and controls as well as financial statement preparation and presentation.

He holds both a Bachelors and Masters of Accountancy from Brigham Young University.

With a solid foundation in Business and Information Systems from Brigham Young University, Doug Larsen embarked on a dynamic career that commenced at the Utah Department of Economic Development, where he broke ground as their first webmaster. His journey then led him to IBM, where over a twelve-year tenure, he honed his skills as a Junior Architect and Manager, driving innovation at one of the world’s tech giants.

In 2011, Doug brought his expertise to CallTower, starting as a Senior Developer. His visionary approach and technical acumen quickly propelled him to Director of Software Development in 2015. Doug played a pivotal role as one of the chief architects behind Connect, a groundbreaking tool that empowers users to seamlessly customize and manage their CallTower solutions.

Beyond his professional achievements, Doug thrives in the great outdoors, finding joy in golfing, mountain biking, and exploring the scenic trails of the greater Salt Lake area. Doug’s blend of leadership, innovation, and passion for technology continues to drive CallTower’s success and inspire those around him.

As the Chief Information Officer at CallTower, Jeff spearheads the management and innovation of the company’s global platforms and vendor relationships, driving the development of CallTower’s cutting-edge, cloud-based Unified Communications and Collaboration solutions.

With over two decades of IT expertise, Jeff is a visionary leader whose career began as a VoIP and networking consultant and corporate trainer for Microsoft’s Windows 2000 MCSE track. His journey through Appia Communications saw him excel as a Provisioning Engineer, Contact Center Engineer, and Engineering and Operations Manager, ultimately advancing to Vice President of Engineering.

Jeff’s strategic leadership was instrumental in Appia’s transformation into a geographically redundant national service provider. When CallTower acquired Appia Communications in 2018, Jeff’s deep industry knowledge and leadership were crucial to a seamless integration, marking him as a cornerstone of CallTower’s technological advancements and growth.

As the Senior Vice President of CCaaS, CX, and AI Solutions at CallTower, Joe leads our Customer Experience (CX) Solutions & Services practice on behalf of CallTower. With 25+ years of experience in senior management, executive sales, and professional consulting, Joe is passionate about enhancing customer communications through innovative solutions and services.

After a successful sales career covering niche business applications, ERP, and Telecom, Joe Co-founded Inoria Inc., a North-American-based CX & CAI software reseller & services business. While serving as Inoria’s EVP Sales & Marketing, Joe was instrumental in helping build the business to 55 employees & 125+ customers across the United States & Canada. Prior to the acquisition of Inoria by CallTower in 2024, Joe was pivotal in helping the company achieve the highest ranking of Partner of Year – North America: Canada for one of the nation’s leading CX Software providers.  

Under CallTower, Joe oversees all sales, service, consulting for our CX portfolio of solutions including CCaaS, Conversational AI, Customer Experience, WEM/WFM, Analytics, and more. Working in tandem with CT’s Executive Team, Joe’s core expertise lies in helping businesses optimize their customer experience strategies, leveraging AI and all Communication technologies to drive efficiency and clarity throughout the organization.

Beyond his personal achievements, Joe enjoys the outdoors and being involved in his community and some local charities. And when he’s not on an airplane, visiting customers, or attending events, Joe enjoys spending time in his hometown of Montreal, Quebec (Canada) with his wife, family and grandchildren located in Montreal, QC and Los Angeles, CA.

Email: jbigio@inoria.com

As Sr. Vice President of Client Support, Jim Manetta has the overall responsibility for the technical support of CallTower’s global customer base. Jim brings over 25 years of experience in customer support in the Telecommunications field.  Jim began his career in communications at ACC Telecom, where he worked as a customer service representative, Networks Operations Center Engineer, and a Switch Technician. In 1998, Jim joined PAETEC, as the first technician in the Network Operations Center. His experience came full circle when he was promoted to the position of Vice President of Operations, overseeing Customer Service, Network Operations Center, and Network Engineering.  Throughout his tenure, Jim has created processes that focused on creating an outstanding customer experience while enabling employee growth. His passion to provide unmatched customer support has driven his success and continues to be a value that he instills in his organization.

Brett Reese began his work in the telecom field as a Project Manager with ABS Telecom. After making the move to an Implementation Project Manager role at CallTower in 2014, he moved on to become the Manager of Microsoft Implementations in 2015. By 2016, Bret was promoted to CallTower’s Manager of Implementation Services. He thrived in this role, where he oversaw all of CallTower’s implementation projects for the next four years. Finally, in September 2021, Brett became the Senior Director of Client Services – a role that encompasses both the Implementation and Support Departments.