Klarna's IPO CEO Sebastian Siemiatkowski

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

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