The Mendful team
Jill Nagle
Founder/CEO
David Levine
Chief Technology Officer
Halli Steinberg, Special Projects Coordinator
founder & ceo
Jill has over 20+ years of conflict resolution practice, and built Mendful's proprietary methodology. She developed buyer-seller conflict resolution models at eBay and created conflict-reduction decision-making processes at Bank of America. She has a deep UX/UI product systems background and is a widely published author and patented inventor. Â
Interim CTo
David has 40+ years of experience developing shipping category-defining software, including the first Netflix site and early online banking systems. He is a repeat founder across PC, web, mobile, and AI platforms.
Head of Product
Legal Counsel
Halli leads cross-functional initiatives that strengthen operations and support strategic growth. With more than three decades of experience spanning consumer marketing, go-to-market strategy, operational excellence, and customer success, she brings a collaborative, systems-oriented approach to building mission-driven organizations.