Grit

What began as a 14 year old fixing infected computers became Malwarebytes, an 800 person cybersecurity company trusted by millions of customers.
On Grit, Marcin Kleczynski joins Joubin Mirzadegan to explore AI driven cyber threats, strategic reinvention, and the discipline of evolving before the market forces you to.
“We’ve exceeded. Now, what do we do to protect individuals against the next wave of threats, which are plentiful?”
Guest: Marcin Kleczynski, CEO at Malwarebytes
Connect with Marcin Kleczynski
X: https://x.com/mkleczynski
LinkedIn: https://www.linkedin.com/in/marcinkleczynski/
Connect with Joubin
X: https://x.com/Joubinmir
LinkedIn: https://www.linkedin.com/in/joubin-mirzadegan-66186854/
Email: [email protected]
Follow on LinkedIn:
https://www.linkedin.com/company/kpgrit
Follow on X:
https://x.com/KPGrit
​Learn more about Kleiner Perkins: https://www.kleinerperkins.com/

Can you scale customer support without burning out agents or frustrating customers?
Ping Wu shares how Cresta combines AI and human intelligence into a single system that scales sustainably for companies like United Airlines and Porsche.
In this episode, Ping also breaks down the three constraints that shape automation in the real world: conversation complexity, infrastructure debt, and customer demographics.
Guest: Ping Wu, CEO of Cresta
Connect with Ping Wu
X: https://x.com/ping_wu
LinkedIn: https://www.linkedin.com/in/pingwu/
Connect with Joubin
X: https://x.com/Joubinmir
LinkedIn: https://www.linkedin.com/in/joubin-mirzadegan-66186854/
Email: [email protected]
Follow on LinkedIn:
https://www.linkedin.com/company/kpgrit
Follow on X:
https://x.com/KPGrit
​Learn more about Kleiner Perkins: https://www.kleinerperkins.com/

USDC closed the gap between software and law in modern finance.

On Grit, Jeremy Allaire discusses how fully reserved, dollar backed digital currency became part of the financial system after more than a decade of work.

He also shares why for him grit is about sustaining belief through deep uncertainty, even when Circle faced the threat of bankruptcy in 2019.

Guest: Jeremy Allaire, Co-Founder, Chairman and CEO at Circle
​
Connect with Jeremy Allaire
X: https://x.com/jerallaire
LinkedIn: https://www.linkedin.com/in/jeremyallaire/

Connect with Joubin
X: https://x.com/Joubinmir
LinkedIn: https://www.linkedin.com/in/joubin-mirzadegan-66186854/
Email: [email protected]

Follow on LinkedIn:
https://www.linkedin.com/company/kpgrit

Follow on X:
https://x.com/KPGrit
​Learn more about Kleiner Perkins:https://www.kleinerperkins.com/

Glean has grown into a $7.2B company by giving employees AI assistants and agents that extend their capabilities.
CEO Arvind Jain is back on Grit alongside Joubin Mirzadegan. Here’s what stood out:
“My mindset by default is that if you build something last year, that it's got to be obsolete. There has to be a new way to do that thing better today. If not, then it's just lack of imagination.”
“I have no doubts that AI capabilities are just going to increase more and more over the next few years. But even more important is this concept of how much are we even leveraging what AI can do today? I would say that we've not even used 1% of current capabilities of these models”
“If you're trying to be everything to everyone, then you just cannot compete with somebody who's focused on a smaller problem and going deep into that.”
You can also listen to Arvind’s earlier episode here: https://www.youtube.com/watch?v=iIH0Qp6d6bg&list=PLRiWZFltuYPF8A6UGm74K2q29UwU-Kk9k&index=96

Guest: Arvind Jain, founder and CEO, Glean
​
Connect with Arvind Jain
X: https://x.com/jainarvind
LinkedIn: https://www.linkedin.com/in/jain-arvind/

Connect with Joubin
X: https://x.com/Joubinmir
LinkedIn: https://www.linkedin.com/in/joubin-mirzadegan-66186854/
Email: [email protected]
Follow on LinkedIn:
https://www.linkedin.com/company/kpgrit
Follow on X:
https://x.com/KPGrit
​Learn more about Kleiner Perkins:https://www.kleinerperkins.com/

In this recap episode, we highlight the best moments from our 2025 interviews and reflect on the ideas that defined the year.
Featuring:
David Rubenstein (co-founder of Carlyle)
Yamini Rangan (CEO of HubSpot)
Ben Chestnut (co-founder of Mailchimp)
Winston Weinberg (co-founder and CEO of Harvey)
Garrett Lord (co-founder of Handshake)
Aidan Gomez (co-founder and CEO of Cohere)
Michelle Zatlyn (co-founder of Cloudflare)
Evan Spiegel (co-founder and CEO of Snap)
Connect with Joubin
X: https://x.com/Joubinmir
LinkedIn: https://www.linkedin.com/in/joubin-mirzadegan-66186854/
Email: [email protected]
Follow on LinkedIn:
https://www.linkedin.com/company/kpgrit
Follow on X:
https://x.com/KPGrit
​Learn more about Kleiner Perkins: https://www.kleinerperkins.com/