Jeff Lieberman has been at Insight Partners since 1998 and has personally led or co-led more than 100 deals across four continents, giving him one of the longest continuous growth-software investing tenures at a single platform in the industry. He has helped shape Insight's internal culture over more than two decades, including designing a structure where very junior team members have direct control over partners' calendars and are explicitly encouraged to challenge anyone in what he calls a safety culture and hands-on apprenticeship system for developing young investors.