John is an Executive Director at US Angel Investors , a Partner at Crimson Growth Partners and an investor in or advisor to a number of technology companies including LinqTo, NexDefense, Vizkinekt, POC Medical Systems, ManageUP, iBidtoSave, Wingz, 1WorlOnline, Owlized, Barckback, Movez. Earlier in his career, John was COO and co-founder at JMC Telecom, a prepaid telephone card startup, and Co-founder and CEO of SupplyMasters Systems. He has also been COO at Trader Media a roll-up in classified media, VP Marketing and Sales at Zenith/Bull Computers in Europe (mid-range systems), and a manager at Boston Consulting Group. John holds an MBA from Harvard Business School where he was an Arthur Sachs Fellow, and a Master in Engineering from MinesTech in Paris.