Willem Bult is a seasoned software leader and founder with 13 years of experience building product-led startups and scaling engineering teams, now serving as Co-Founder & CEO of Banyan, a global mindfulness community he launched with Jack Kornfield and Tara Brach. He combines hands-on technical chops from CTO roles and early startups with cross-functional leadership at Airbnb, where he led teams on public policy, anti-discrimination, and monetization products through IPO. Willem advises and mentors founders on strategy, team development, and scaling, drawing on a track record of shipping zero-to-one products (Yoowls, RentMethod) and operationalizing engineering organizations. His academic background includes computer science research at Stanford and an M.Sc. from Delft, reflecting a blend of applied research and product engineering. Based in Sebastopol, he focuses on well-being, consciousness, social equity, and climate—bringing mission-driven purpose to technology. Less obvious: he has repeatedly turned niche ideas into automated, scalable offerings (custom retail, leasing workflows, and relationship-management tooling) that bridge user experience and operational efficiency.
13 years of coding experience
16 years of employment as a software developer
Atheneum Natural Sciences & Technology, Atheneum Natural Sciences & Technology at Esdal College
M.Sc. Computer Science, M.Sc. Computer Science at Delft University of Technology
Visiting Researcher Computer Science, Visiting Researcher Computer Science at Stanford University
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.