The hardest systems attract the most serious builders.Joubin Mirzadegan shares how a career defined by ‘hardcore discipline’ and impatience with broken infrastructure pulled him from Kleiner Perkins back into the arena as CEO of Roadrunner, now valued at $7.2B.He reflects on how an early startup failure taught him that building is about will, and why he believes AI only matters when it delivers precision at scale.Guest: Joubin Mirzadegan, Partner, Kleiner Perkins​Connect with Mamoon<ul><li><a href="https://x.com/mamoonha?lang=en">X</a></li><li><a href="https://www.linkedin.com/in/mamoonha/">LinkedIn</a></li></ul>Connect with Joubin<ul><li><a href="https://x.com/Joubinmir">X</a></li><li><a href="https://www.linkedin.com/in/joubin-mirzadegan-66186854/">LinkedIn</a></li><li>Email: <a href="grit@kleinerperkins.com">grit@kleinerperkins.com</a></li></ul><a href="https://www.kleinerperkins.com/">​Learn more about Kleiner Perkins</a>

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The Pull to Build: Joubin Mirzadegan on Grit and Starting Roadrunner

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