Zack is an angel investor and advisor for early stage big data companies. He co-founded and helps run the seed stage investment fund called Data Collective. Zack is also cofounder and managing partner of Founders Den, a shared workspace for experienced technology entrepreneurs. Previously, Zack cofounded Montara Capital Partners, a real estate private equity fund, where as the managing director he ran the day-to-day operations of the firm. He was previously an associate at Wilson Sonsini Goodrich & Rosati and a law partner at Virtual Law Partners. Since 2003, Zack has served on the Advisory Board of the East Palo Alto Charter School, a top-performing K-12 charter school. Zack is also a member of the boards of the Tipping Point Community, the UCSF Foundation and the Fine Arts Museums of San Francisco.