Jag Duggal is chief product officer at Nubank, a decacorn neobank founded in Brazil. It’s valued at over $30 billion, is bigger than Coinbase, Robinhood, Affirm, and SoFi combined, has 100 million customers (more than Bank of America!) while only operating in three countries in Latin America, and 80% to 90% of its growth comes through word of mouth. Prior to Nubank, Jag was a director of product management at Facebook, a senior vice president at Quantcast, and a product leader at Google. In our conversation, we discuss:• How Nubank builds a fanatical user base• Tactics for driving word-of-mouth growth• Measuring customer love through the Sean Ellis score• The importance of strategic clarity• The role of category design in creating successful products• Why companies should strive to be “fundamentally different,” not “incrementally better”• Nubank’s vision for an AI-powered banking future—Brought to you by:• WorkOS—Modern identity platform for B2B SaaS, free up to 1 million MAUs• Mercury—The powerful and intuitive way for ambitious companies to bank• OneSchema—Import CSV data 10x faster—Find the transcript at: https://www.lennysnewsletter.com/p/be-fundamentally-different-jag-duggal—Where to find Jag Duggal:• LinkedIn: https://www.linkedin.com/in/jagduggal/—Where to find Lenny:• Newsletter: https://www.lennysnewsletter.com• X: https://twitter.com/lennysan• LinkedIn: https://www.linkedin.com/in/lennyrachitsky/—In this episode, we cover:

Jag’s background

Nubank’s remarkable achievements

Nubank’s product development process

Nubank’s values

Building products people love fanatically

The Sean Ellis score

An example project using the Sean Ellis score

Picking up the phone and calling customers

The importance of starting small and iterating

Pushing back effectively

Uncovering pain points through customer research

An example of setting a clear hypothesis

Developing a strategy

“Be fundamentally different, not incrementally better”

Category design

Nubank’s founding story and goals for the future

Advice for adding new product lines

The future of fintech and banking

AI corner

Failure corner

Key takeaways