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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

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

Grit

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