Almost 40 years in tech. Started in engineering world (power gen, Daimler-Benz CAD-CAM, IBM's/world's first data warehouse) Then spent a long time on Wall Street building systems for every asset class (pricing, trading, risk, post-trade, etc) except commodities. This time was broken up by time at 3 Web 1.0 startups, including 2 years at DoubleClick. Since then, I have worked on a couple other startups, one of which was a DDLT platform begun in CA and moved to Shanghai, PRC.