Tom Noonan is a founding partner of TechOperators LLC, an early stage technology investment firm in Atlanta. Noonan is also Chairman of TEN Holdings, LLC, a diversified family office investment company. Most recently, he was the General Manager of the Energy Management business of Cisco Systems, following the acquisition of his company JouleX in 2013, where he was co-founder and CEO. A serial entrepreneur, Noonan also co-founded Endgame Security where he currently serves on the board of directors. Endgame is the leading provider of software solutions to the U.S. Intelligence Community and Department of Defense, protecting national security missions from the most sophisticated adversaries in the world's most hostile environments. He is also the former chairman, president and chief executive officer of Internet Security Systems, Inc., which was acquired by IBM for $1.9B in 2006. Tom Noonan and Chris Klaus launched ISS in 1994 to develop the premier network security management company

Prior to co-founding ISS, Noonan held senior management positions at Dun and Bradstreet Software, where he was vice president, worldwide marketing. He began his career as a product manager and engineer for Rockwell Automation, specializing in real-time, automated control systems for computer-integrated manufacturing. Noonan founded two successful technology companies while residing in Boston: Actuation Electronics, a precision motion-control company and Leapfrog Technologies, a software development company designed for networked control system applications.

Noonan’s management style and vision has been widely recognized by industry-leading publications including Forbes, Business Week and Fortune. In 1999, Ernst and Young recognized him as “Entrepreneur of the Year.” In 2002, President Bush appointed Noonan to serve on the National Infrastructure Advisory Council (NIAC), a White House homeland defense initiative that protects information systems critical to the nation's infrastructure, where he served under President Obama and continues to serve under President Trump. Noonan was elected into the Georgia Technology Hall of Fame in 2006.

Noonan holds a mechanical engineering degree from Georgia Tech and a business degree from Harvard University. He is a frequent speaker at leading industry events and serves on numerous, company, industry and civic boards, including Intercontinental Exchange (ICE/NYSE), Manhattan Associates (MANH), Endgame, Phantom Cyber, Ionic Security, Barkly Protects, NexDefense, SalesLoft , Relayr, and DeDrone. Noonan serves on the boards of Children’s Healthcare of Atlanta, The Westminster Schools, the Georgia Tech Foundation and the Georgia Tech Athletic Association. He is an active technology investor and is a leading philanthropist through the work of the Thomas Noonan Family Foundation that supports education, environmental and healthcare causes locally and nationally