PMFers

In this episode of PMFers, we sit down with Paul Berg—founder of Sablier and creator of PRBMath—to explore his journey from teenage Objective-C freelancer to shipping one of the most widely used token streaming protocols on Ethereum. Paul shares how building Sablier in a bear market helped him learn the art of launching fast, getting feedback on crypto Twitter, and evolving from general-purpose primitives to use case–driven product...

In this episode of PMFers, we sit down with Will Warren—co-founder of 0x and one of the earliest minds in decentralized exchange infra. From the wild west of CEXes to pioneering off-chain intents and launching Matcha, Will takes us through nearly a decade of Ethereum’s evolution.

We unpack the birth of 0x, why early dev-fit doesn’t always translate to user-fit, and how building infra without control of your destiny leads to vampire...

In this episode of PMFers, we sit down with Griff Green—Giveth founder, early Ethereum advocate, and longtime public goods champion. Griff shares his journey from the early days of The DAO (and its infamous unwind) to building Unicorn, Pairwise, and other experiments in the “Giveth Galaxy.”

We get into what real product-market fit looks like for mission-driven tools, how building for others beats building for yourself, and why re...

In this episode of PMFers, we sit down with Jango.eth—creator of Juicebox and one of the most thoughtful protocol designers in the space. From making music websites to building roommate apps, Jango’s path to Ethereum started with art, moved through pain points in banking, and culminated in one of the most flexible funding protocols onchain. We dive into how Juicebox evolved from early experiments like Tiles and SharkDAO to becoming...

In this episode of PMFers, we sit down with Zefram.eth to trace his journey from building iOS apps in middle school to launching onchain products like a decentralized hedge fund DAO in the early DeFi days. He shares hard-earned insights on getting first users, staying focused, validating ideas, and why most successful blockchain apps still revolve around finance. We also dive into AI tools for devs, the long game of onchain gaming,...

In this episode, Owocki takes us through his early days hacking PHP, the founding of Gitcoin, and what it actually feels like to chase product-market fit onchain. We talk quadratic funding, moonshot bots, accelerators, regen memes, and how to survive (and ship) when everything’s on fire. • Venture Deals by Brad Feld and Jason Mendelson 👉 https://www.venturedeals.com • Green Pill: How Crypto Can Regenerate the World by Kevin Owoc...

In this episode of PMFers, we’re joined by Martin Köppelmann—co-founder of Gnosis and one of the most consistent voices in the Ethereum space since the early days. From hacking on Bitcoin prediction markets in 2013 to helping launch Safe (formerly Gnosis Safe), CowSwap, Circles, and Gnosis Pay, Martin has been quietly shipping some of the most important infrastructure in crypto—often before the world was ready for it.

Alex Masmej on PMF, Speculation, and Moving Fast 🚀💰🔥

Alex Masmej joins PMFers to share his journey from launching personal tokens to building speculative social apps and chasing product-market fit. He breaks down how he got his first on-chain users, why he moved fast (and sometimes broke things), and what he’s learned about when to kill an idea vs. when to double down.

Zak Cole’s journey to product-market fit is unlike any other—from securing military encryption in Iraq to securing smart contracts on Ethereum. In this episode, he breaks down his early days in crypto, surviving the DAO hack, and how he built Slingshot, Code4rena, and other disruptive projects. Along the way, he shares hard-earned lessons on building in public, testing ideas, and why aggressively forgetting failures i...

Doggie B went from aerospace engineering and flight software for helicopters to building some of the most battle-tested smart contracts in DeFi. In this episode, he shares how his background in high-stakes engineering shaped his approach to building, auditing, and shipping code in crypto. As a key contributor to the Viper compiler and Yearn V2, Doggie B explains how he scaled Yearn to $6.5B in TVL, why Python and Vipe...

Zach Herring has always been a builder—whether it was stapling together comics at four years old, spinning up fan sites for Jedi Knight, or launching on-chain collaborative art projects. In this episode, Zach shares how his love for self-expression and tinkering led to BasePaint, a permissionless pixel art experiment where artists earn from their work. He breaks down mechanism design, why crypto uniquely enables emerg...

Joseph DeLong joins PMFers to share his journey from protocol research to leading Sushi during DeFi Summer and building on-chain products that actually get users. He breaks down how he learned to ship, why he optimizes for simplicity over modularity, and what he’s learned about avoiding over-engineering in smart contracts.

We dive into DeFi’s core primitives, why most oracles are a cop-ou...