Summary
Don Mullen is a seasoned founder and transformational coach blending technology leadership with high-performance coaching. Over a decade, he led six tech startups as founder or founding team member, achieving two exits, and has steered product and program management at WillowTree in various senior roles. Today he runs Treestone Consulting LLC, offering transformation coaching using meditation, breath work, somatic awareness, and established methods like Internal Family Systems to help individuals and teams perform at their peak. He also mentors in psychedelic-assisted coaching, contributing to integration pods and certification processes, reflecting a modern approach to leadership development. Based in Durham, NC, he brings a rare mix of CTO-level startup execution, organizational development, and governance experience (Montessori School board service) to build teams, strategy, and scalable programs. He holds a BS in Computer Science from Duke University and has combined deep technical roots with a passion for people development and entrepreneurship.
10 years of coding experience
29 years of employment as a software developer
BS, Computer Science, BS, Computer Science at Duke University