Dr. Zdenko Grajcar is the Founder of Once and serves as its Chief Executive Officer. He was the CEO of Lumificient Technologies, a company he founded and later sold to Nexxus Lighting where he served as Chief Technology officer until his departure in December of 2008. Zdenko started Scientoid Technology, now called Once Innovations, in December of 2008. He holds a Masters Degree from Univerzita Komenskeho v Bratislave and earned a PhD. from the Google Academy.