Vlad Shmunis
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Vlad Shmunis is the founder, chairman, and CEO of RingCentral, a cloud-based communications company he started with cofounder Vlad Vendrow in 1999. He immigrated from Ukraine to the United States with his family in the 1970s, earned bachelor’s and master’s degrees in computer science from San Francisco State University, and worked as an engineer at a Silicon Valley startup. Before RingCentral, he founded enterprise software company Ring Zero Systems and sold it to Motorola. He is known for cofounding RingCentral and leading the company after its public listing.
Updated 11 September 2026
Public sources: forbes.com
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