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1:41:33ENTwo Days to a Founding Hypothesis: Inside the Foundation SprintHost Lenny RachitskyDesign Sprint creators Jake Knapp and John Zeratsky walk through a scripted 10-hour process that pins down customer, differentiation and approach before a startup builds anything.
1:42:28ENJournalists Don't Care About You: A Magazine Editor's Field Guide to Getting PressGuest Jason Feifer · Host Lenny RachitskyEntrepreneur editor-in-chief Jason Feifer explains how to prepare, pick the right writer, and pitch a story that an editor will actually say yes to.
1:03:27ENFind the Cultural Erogenous Zone: A Comms Playbook for Making Ideas SpreadGuest Lulu Cheng Meservey · Host Lenny RachitskyLulu Cheng Meservey, the former Substack comms head, explains how underdog startups can build their own audiences, take smarter risks and shape messages people want to repeat.
1:28:51ENSeven Years in the Making: How StackBlitz Turned Bolt into a $40M ARR Overnight SuccessGuest Eric Simons · Host Lenny RachitskyStackBlitz CEO Eric Simons explains how a browser-based operating system, a bootstrapped team and a better Claude model turned a nearly bankrupt company into one of the fastest-growing products ever.
1:18:58ENDelta 4, Dharma and Second-Order Thinking: Kunal Shah's Philosophy of Building in IndiaGuest Kunal Shah · Host Lenny RachitskyCRED founder Kunal Shah explains his product framework, why India's market behaves differently, and the habits of curiosity he credits for his success.
1:14:51ENLeaving Uber to Write Full Time: Gergely Orosz on Building The Pragmatic EngineerGuest Gergely Orosz · Host Lenny RachitskyThe author of the top engineering newsletter on Substack explains why he walked away from a big-tech career, what a week of full-time writing really looks like, and what it takes to make it work.
1:23:36ENYou Are Not a Marketplace Founder (Yet): A Stanford Professor on Friction, Data and ExperimentsGuest Ramesh Johari · Host Lenny RachitskyRamesh Johari explains what marketplaces really sell, why prediction is not decision-making, and how experiments and rating systems should be designed.
1:29:39ENFive Customers, Three Prototypes, One Day: How to Find Your Bullseye CustomerHost Lenny RachitskyMichael Margolis of GV explains how to narrow to the customer most likely to adopt first — and how to prove it with a one-day research sprint.
1:28:38ENBuild for Feelings, Not Graphs: Inside The Browser Company's Product PhilosophyGuest Josh Miller · Host Lenny RachitskyJosh Miller, CEO of The Browser Company, explains how Arc is built around emotions, values, a tiny-but-unusual team and a bet on the internet as the next computer.
1:39:23ENProven, Better, New: Mark Pincus on Copying Smartly, Killing Hope and Building an Internet TreasureHost Lenny RachitskyThe Zynga founder shares the framework behind his hit games, why starting small beats starting big, and what he sees coming for consumer apps in the age of AI.
1:39:50ENCraft Over Metrics: How Linear Builds Software with One PM and No A/B TestsGuest Karri Saarinen · Host Lenny RachitskyLinear co-founder and CEO Karri Saarinen explains how a roughly 50-person, profitable company runs on taste, ownership, paid work trials and a deliberately slow, focused growth path.
1:21:35ENSelling the Mario-on-Blast: Jen Abel's Playbook for Growing Enterprise Sales from $1M to $10M ARRHost Lenny RachitskyEnterprise sales veteran Jen Abel explains why startups should chase tier-one logos, price near $100K, sell vision instead of problems, and hire salespeople who can act like founders.
1:10:21ENReteaming Is Inevitable: Heidi Helfand on Five Ways Teams Change and How to Do It WellGuest Heidi Helfand · Host Lenny RachitskyThe author of Dynamic Reteaming explains why stable teams are a myth, how to run reorgs transparently, and when an isolated team is the right tool.
1:13:52ENPunching Above Your Weight: Airtable's Early Marketing Playbook, From Billboards to ChampionsGuest Zoelle Egner · Host Lenny RachitskyAirtable's employee number 11, Zoelle Egner, explains how a 15-person company earned enterprise trust, built word of mouth and chose where to spend scarce marketing effort.
1:30:53ENObviously Awesome in Practice: April Dunford's Playbook for B2B Product PositioningGuest April Dunford · Host Lenny RachitskyThe author of Obviously Awesome explains how to tell whether positioning is broken, how to rebuild it step by step, and why one persona matters more than the rest.
1:06:10ENColumn B Thinking: How Melanie Perkins Built Canva by Starting From the DreamGuest Melanie Perkins · Host Lenny RachitskyCanva's co-founder and CEO explains how working backward from a wild vision, rejection from over a hundred investors and a two-year rewrite shaped a company valued above $42 billion.









