Grit explores what it takes to create, build, and scale world-class organizations. It features weekly episodes highlighting the leaders who are pushing their companies to make a difference. This series is hosted by Joubin Mirzadegan, go to market operating partner at Kleiner Perkins, a venture capital firm investing in history-making founders.
"The answer to every problem is a model."
Parag Agrawal shares the ideas behind Parallel: products that continuously learn, and teams designed around versatile problem solvers.
He also shares why he built an AI agent for himself, and why AI's biggest opportunity is expanding what people can achieve.
Guest: Parag Agrawal, founder and CEO of Parallel, and former CEO of Twitter
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"There's 20 fires going on at every moment in the office and you have enough water to put out four."
Mark Roberge shares what it takes to build and scale a company, from finding product-market fit to knowing when it's time to grow.
He also shares the framework behind his new book, The Science of Selling, and why founders should scale based on their own data, not another company's success.
Guest: Mark Roberge, Founding CRO of HubSpot, HBS Professor, and Co-Founder at Stage 2 Capital
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In 2020, Airwallex lost nearly half its revenue overnight. Today it's worth $11 billion.
Jack Zhang reflects on the decisions that kept the company alive, raising capital during uncertainty, and leading through its toughest chapter.
This episode is a candid look at why Jack chose to keep building, even when a $1.2 billion acquisition was on the table.
Guest: Jack Zhang, founder and CEO, Airwallex
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AI may change software overnight, but company building still takes time.
Ryan Smith explains why, despite the pace of AI, “the race is going to be way longer than anyone thinks.”
He reflects on Qualtrics surviving multiple market cycles and ultimately being acquired by SAP for $8 billion days before going public.
Guest: Ryan Smith, co-founder Qualtrics
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Great software companies often come from understanding pain points at a very deep level.
On Grit, Aman Narang shares how Toast built trust with 171,000+ restaurant operators by helping restaurants manage everything from payments and online orders to staff scheduling and daily operations.
He also reflects on lessons around product-market fit and scaling a company before it’s fully ready.
Guest: Aman Narang, co-founder and CEO, Toast
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Founder quality becomes more important as startups become easier to build.
Trae Stephens, co-founder of Anduril and partner at Founders Fund, has spent years backing founders with strong conviction, including most recently at Roadrunner.
He shares why too much capital too early can hurt startups, and why the best companies are built by teams with complementary strengths.
Guest: Trae Stephens, co-founder, Anduril and Partner, Founders Fund
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What does it take to run a company where the business is risk itself?
In conversation with Joubin Mirzadegan, Peter Zaffino shares what the role demands at AIG, including high stakes decisions, constant responsibility, and sacrifice.
This episode looks at his journey as CEO ahead of his transition to Executive Chairman this June.
Leading at a global scale across 200+ countries.
Guest: Peter Zaffino
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In a market that hadn’t changed in decades, Linear didn’t win by being faster. They won by being more thoughtful.
Karri Saarinen helped shape design at Airbnb and Coinbase before building Linear around small teams and high standards.
On Grit, he shares how Linear is building for a new era of software development.
Guest: Karri Saarinen, co-founder and CEO of Linear
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What does security look like when attackers use AI better than you do?
Armadin recently raised $200M to build for the “attacker of the future,” where attacks are autonomous and harder to contain.
On the Kleiner Perkins Grit podcast, Kevin Mandia joins Joubin Mirzadegan to share how he’s thinking about this shift, why cybersecurity has always been a calling, and why customer trust is what ultimately compounds into market leadership.
Guest: Kevin Mandia, Founder and CEO, Armadin
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Emil Michael went from scaling Uber across 600 cities to rewiring the world's largest military.
In the midst of the Pentagon-Silicon Valley debate, the now U.S. Under Secretary of Defense for Research and Engineering opens up about what a real partnership demands from both sides.
He also shares how he's built three new entry points for defense tech companies, and why America's military is called the "Department of War" again.
Guest: Emil Michael, U.S. Under Secretary of Defense for Research and Engineering
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Few founders have seen Silicon Valley from every seat at the table.
After co-creating Google Maps at Google, serving as CTO at Facebook, and later as co-CEO of Salesforce, Bret Taylor is now building AI agents at Sierra to redefine customer experience.
On Grit, he explains why “competitive intensity” is a core value at their fast-growing company and why he believes AI won’t lead to a world where people stop working.
Guest: Bret Taylor, co-founder of Sierra
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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
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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
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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
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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
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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)
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What happens when AI becomes your most influential referrer?
As consumers turn to ChatGPT for answers, James Cadwallader and his team at Profound help brands like Eight Sleep and MongoDB gain visibility and leverage inside AI models.
On this episode of Grit, he explains why brand narrative has shifted away from content, and why Profound is scaling globally ahead of traditional SaaS timelines.
Guest: James Cadwallader, co-founder and CEO of Profound and Ilya Fushman, partner at Kleiner Perkins
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Turning down a $3B offer from Facebook is a bold move for any young CEO.
Evan Spiegel shares how Snap’s early dream was to stay independent and give its community an authentic voice, a bet that proved right.
He also explains why they are now doubling down on AR glasses and why the anxiety around AI deserves far more attention from tech leaders.
Guest: Evan Spiegel, co-founder and CEO of Snap Inc. and Bing Gordon, Advisor at Kleiner Perkins
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What does it take to go from advising founders to becoming one?
On this week’s special Reverse Grit episode, we flip the script and put our Grit podcast host Joubin Mirzadegan in the guest seat.
Joubin recently founded Roadrunner, where he is now co-founder & CEO. Roadrunner is building an AI‑native CPQ to modernize the quote‑to‑cash stack, drawing on years of conversations he’s had with enterprise revenue leaders.
Stepping into the host role, Mamoon Hamid joins Joubin to talk about his transition from sales leader to founder, how Roadrunner came together, and why it became our first incubation since Glean.
Roadrunner is hiring! Check them out: https://www.roadrunner.ai/
Guest: Joubin Mirzadegan, Partner, Kleiner Perkins
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Fifteen years in, it can still feel like “we’re just getting started.”
Michelle Zatlyn, co-founder of Cloudflare, returns to Grit with Joubin Mirzadegan to share how Cloudflare secures the internet for millions, with a vision built to last generations.
She also shares why staying close to reality and to customers becomes harder as success compounds, and how Cloudflare is helping content creators regain control in an AI driven internet.
Guest: Michelle Zatlyn, co-founder and President of Cloudflare
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Screens have pulled families apart.
Brynn Putnam set out to bring them back together with Board, the world’s ‘first face-to-face game console.’
On Grit, she tells Joubin Mirzadegan how every venture she’s built, including Mirror, started as a personal need, and how her true edge is the ability to strip an idea down to what actually matters.
Guest: Brynn Putnam, founder and CEO of Board
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How do companies like Salesforce and Dell scale intelligence across every cloud?
Aidan Gomez, co-founder and CEO of Cohere, explains how they’re building AI that works across all enterprise systems and deploys anywhere, giving companies true flexibility and security.
He joins Joubin Mirzadegan for a wide-ranging conversation on why synthetic data went from dismissed to indispensable, and how the race among AI labs is really unfolding.
Guest: Aidan Gomez, co-founder and CEO of Cohere
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The hardest company to build is the one you start after you’ve already succeeded.
After scaling Yext into a platform powering millions of businesses, Howard Lerman chose to start over with Roam, the “Office of the Future,” where humans and AI work side by side from anywhere.
On Grit, he joins Joubin Mirzadegan to talk about the solitude of leadership and what happens when you stop building for Wall Street.
Guest: Howard Lerman, co-founder and former CEO of Yext, and founder and CEO of Roam
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The hardest part of transformation is knowing what to let go of.
Dan O’Connell, now leading Front as CEO and formerly on the board at Dialpad, joins Joubin Mirzadegan to explore the delicate balance between legacy and innovation as he leads a decade old company through the AI revolution.
He also reflects on why courage and control can coexist in leadership, and what it means to “make decisions that give you energy.”
Guest: Dan O’Connell, CEO of Front
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Before AI became a buzzword, a few true believers were already building.
Since early 2022, Mati Staniszewski and his team at ElevenLabs have been among them, working to create voices that “actually represent emotions.”
He shares with Joubin Mirzadegan how voice AI is transforming diverse fields, from delivering personalized healthcare for different age groups to amplifying creativity in filmmaking.
Guest: Mati Staniszewski, co-founder and CEO of ElevenLabs
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What’s product-market fit like when you give people the power to do what they never thought was possible?
On this rerun of Grit from April 2024, Victor Riparbelli, co-founder and CEO of Synthesia, shares how his platform gave billions a new way to create video without cameras, and explores a future where video and audio replace text as the primary way to share knowledge and content.
Guests: Victor Riparbelli, CEO and co-founder of Synthesia and Josh Coyne, Partner at Kleiner Perkins
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Make your product irresistible, and everything else will follow.
That’s the philosophy of Grant Lee, co-founder and CEO of Gamma, an AI design platform with an 'anti-PowerPoint approach', used by over 50M people.
This week on Grit, he also shares why enduring businesses aren’t one person shows, and how their deliberate hiring process shapes and strengthens company culture.
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Scaling a business globally comes down to leaders who align teams and drive them forward together.
Snowflake serves over 12,000 customers, and early executives Chris Degnan and Denise Persson share how they scaled the company while keeping the unlikely pairing of sales and marketing perfectly aligned through hypergrowth.
They join Joubin Mirzadegan to share insights from their new book, Make It Snow, revealing how they built Snowflake’s ‘go-to-market engine’ and fostered a customer-first culture across every function.
Guests: Chris Degnan, former CRO and advisor to the CEO at Snowflake, and Denise Persson, CMO at Snowflake.
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What does it take to reinvent entire industries, over and over again?
This week on Grit, Sebastian Thrun, the “godfather” of self-driving cars and massive open online courses, reflects on a career pushing the boundaries of technology across mobility, education, and AI.
With Joubin Mirzadegan, he shares why he believes autonomous driving could become the biggest lifesaving technology in history, and how a wake-up call led him to found Udacity to truly democratize higher education.
Guest: Sebastian Thrun, CEO of Stealth Startup, founder of Google X and Udacity
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What kind of founder builds a billion-dollar company around something anyone can use for free?
Matt Mullenweg, co-founder of WordPress and CEO of Automattic, joins Joubin Mirzadegan to reflect on two decades of building the platform that now powers over 43% of all websites through cycles of doubt, decline, and reinvention.
He also shares how Automattic aligns employees with its mission to democratize publishing and commerce through paid sabbaticals and remote work.
Guest: Matt Mullenweg, co-founder of WordPress and founder and CEO of Automattic
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