Klarna CEO Sebastian Siemiatkowski joins Sourcery on the eve of their IPO to share the ultimate comeback story — from billion-dollar losses to profit, the hard layoffs, the AI rebuild, and why he let employees lead the charge with new tools. Recorded at the NYSE, this might be the best Sourcery interview to date.

We cover how Klarna balances playful branding — pink logos, surreal fish ads, and Snoop Dogg collaborations — with serious technology that powers 111M users and global expansion. Sebastian also addresses misconceptions: Klarna isn’t just “buy now, pay later,” but a full challenger to the $1.2T U.S. credit card market.

He explains why Klarna’s business model protects them in recessions, how AI is transforming culture and efficiency, and what he gets out of coding himself at night with Cursor. A company equal parts meme factory and trillion-dollar contender, this was so much fun.

1. Sebastian Siemiatkowski: https://x.com/klarnaseb

2. Molly O’Shea: ⁠https://x.com/MollySOShea⁠

3. Sourcery: ⁠https://x.com/sourceryvc⁠

Brought to you by:

• Brex—The modern finance platform, combining the world’s smartest corporate card with integrated expense management, banking, bill pay, & travel.

As a Sourcery Listener you get: 75,000 points after spending $3,000 on Brex card(s), white-glove onboarding, $5,000 in AWS credits, $2,500 in OpenAI credits, & access to $180k+ in SaaS discounts. On top of $500 toward Brex travel, $300 in cashback, plus exclusive perks (like billboards..) visit → https://brex.com/sourcery

• Turing—Turing delivers top-tier talent, data, and tools to help AI labs improve model performance—and enables enterprises to turn those models into powerful, production-ready systems. Visit: https://turing.com/sourcery

• Kalshi—The largest prediction market and the only legal platform in the US where people can trade directly on the outcomes of future events: https://kalshi.com/sourcery

Follow Sourcery for the latest updates!

https://www.sourcery.vc/