After leaving the army in 1981, Stern went on to co-found his first company - Rosh Intelligent Systems, where he was CEO. The company provided software maintenance and
artificial intelligence diagnostic solutions, and was one of the first venture backed companies in Israel. Stern moved to Boston in 1989 to manage the Rosh headquarters there. Rosh (later renamed ServiceSoft) was sold to Broadbase Software in 2002. Stern left Rosh in 1993 to found Corex Technologies Inc (later renamed to CardScan). He served as its CEO until 2006. The company sold business card scanners, and was, according to the NPD group, the best-selling card scanning solution in the early 2000s. In 2000, he created a new company called Eliyon Technologies. It received investment from
Venrock, and later the company changed its name to Zoom Information Inc. ZoomInfo is a go-to-market solution provider, selling business intelligence data on millions of businesses and business contacts. Stern was the founder, CEO and Chief Scientist at ZoomInfo, and has six patents issued in his name. He developed most of the core technology that still runs the company. In 2017 the company was sold to Great Hill Partners, a private equity firm for $240 million, with Stern staying on as CEO until July 2018, and remained on the company's board. Six months after leaving the CEO position, the company was sold to DiscoverOrg for $785 million, who later adopted the
ZoomInfo name and brand for the combined company. In 2008 Stern was a co-founder of Bizo which was a spin-off from ZoomInfo. The company provided business demographic data for online publishers. Bizo was acquired by LinkedIn in 2014 for $175 million. In 2019 Stern co-founded two companies - AltNext and Opster. AltNext is a live-streaming marketing platform for the
Esports industry. Opster is an
ElasticSearch monitoring and performance enhancement tool set. == Awards and recognition ==