David Weisenberg

Partner & Managing Director
David Weisenberg, UPSTACK Advisory partner - mid-shot wearing suit
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About David Weisenberg

David Weisenberg is a proven business technology advisor with nearly four decades of experience. As a Partner and Managing Director with UPSTACK, David sources innovative networking and technology for existing and prospective customers.

David began his career in Florida, where he worked with emerging cable and wireless technologies as an account executive responsible for phone service sales and support. One year later, David joined Allnet Communications as a sales manager and later major accounts executive, where he learned how to build, motivate and support corporate sales. From 1992-2000, David worked at MCI (formerly WorldCom) as a major account executive and later as a national account executive. During this time, David handled large enterprise accounts and led a team specializing in pre-sales engineering support, technical assistance, marketing, and direct support management.

In 2001, David partnered with Bob Matthews to form Progressive Communications Management (PCM). PCM advises enterprise and midmarket organizations on optimal cloud, networking and communications solutions to meet business and financial objectives and backs up its recommendations with ongoing management and support. The company offers connectivity, managed network services, cybersecurity, Secure Access Service Edge (SASE) and SD-WAN, cloud infrastructure and applications, data center and colocation, and unified communications and contact center solutions.

One of David’s most successful deployments was a customer’s Call Center to Contact Center transformation that included an Artificial Intelligence (AI) component to improve their Customer Experience. David helped transform and update their technology while decreasing their telco costs by 10%. A highlight of this deployment was an annual $1,000,000 ROI, made possible by artificial intelligence efficiently handling a significant portion of their customer inquiries regarding the status of deliveries and payments. This led to a major reduction of labor hours needed in a 7×24-hour contact center environment. Additionally, David added Workforce Management and Interaction Analytics to streamline the customer’s training process and upgrade their frontline contact center employees.

David attended Florida International University to earn his degree in business management.


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Unified Communications

Cloud Contact Center

Cloud Contact Center

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Network Connectivity

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Cloud Services

Recognition & Certifications

  • 8-Time Intelisys Presidents Club Winner
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Fort Lauderdale, FL