All Speakers 

Julie Zhuo
Partner @ Slingshot Edge
After a light-bulb moment John made the leap from Process Engineer to SaaS/Software sales, marrying two things he has a passion for – problem-solving and behavioral psychology. In a move he’s never looked back from, he’s enjoyed a successful career as a seller, and Director of global sales teams where he took a hands-on coaching approach. After rolling out the Slingshot methodology with great success whilst at Lockheed Martin’s Airport Software business, John joined Calum and Slingshot in 2017. He’s on a crusade to help sellers elevate our profession to the noble and respected standing it rightly deserves.

Be There at UNBOUND 2026
Boston. September 16–18. Three days designed to help you move beyond outdated playbooks. Break beyond the limits that defined yesterday. Be unstoppable.

