Went through Affirm's PM interview process for a senior PM role earlier this year. It's more structured than I expected for a company their size.
The rounds (full onsite): Product sense. Classic PM format: pick a product, how would you improve it? In my case they asked about Affirm's merchant-facing dashboard. Not a generic "design an app" prompt. They want you thinking about their actual business. Know the difference between a consumer product (Affirm's app + card) and their merchant integration layer. I got questions about both. Execution / metrics. Something like: "you launched a feature and DAUs dropped 10% the next week. Walk me through your diagnosis." They care about how you structure the analysis, what data you'd look at first, and when you'd decide to roll back vs. dig deeper. Behavioral. Same as others have described. Failure stories, cross-functional conflict, moment you pushed back on leadership. The financial honesty value showed up here: "tell me about a time you told a stakeholder something they didn't want to hear." Case/strategy. This surprised me. More consulting-adjacent than typical PM interviews. We discussed Affirm's competitive positioning vs. BNPL competitors (Klarna, Afterpay, Apple Pay Later). Not a formal case but they wanted to see strategic thinking about the market.
What landed well for me: being specific about merchant economics, not just consumer experience. PMs who understand both sides of Affirm's marketplace (merchant + consumer) seem to do better.
What I struggled with: the metrics round moved fast and they had follow-up questions I hadn't prepped for. Practice talking through metric trees out loud, not just in your head.
No take-home in my loop. All live. Loop was 4 rounds in one day, about 4.5 hours total.