He is a serial entrepreneur, founder of seven NYC based startups, raising over $1 billion and exiting over $3 billion. Alex founded two of New York City's top 10 venture-backed exits since 2000; Arbinet with a 2004 IPO that had a market cap of over $750M and Transit Wireless currently valued at $1.2 billion. He has also been a featured speaker at over 120 conferences and TV interviews, and the author of over 32 patents relating to exchanges, VOIP, messaging and communication.
Alex has received numerous awards for innovation including being nominated twice by E&Y as an entrepreneur of the year in 2002 & 2011, Crain's 2010 Top Entrepreneur and the prestigious 2000 Albert Einstein Technology Medal and the Technology Foresight Award for Innovation(presented in Geneva at Telecom 99). Alex is considered to be one of the pioneers of VOIP, with foundational patents dating back to 1994 many of today's hardware and software designs originated from these early ideas.
Alex authored patents that cover aspects of the Smart Grid, Ad exchanges, Groupon, Twitter, Skype, App Store, Netflix streaming concept and many other top performing web companies. Additionally, Arbinet’s fundraising story was featured as a Case Study in 2001 by Harvard Business School.