I interviewed at JPMC recently for a product-adjacent technical role and the behavioral portion was more substantial than I expected. At a lot of tech companies behavioral feels like a formality. At JPMC it felt like they actually weighted it.
Here are the behavioral questions I got asked (across two different rounds): Tell me about a time you had to balance competing priorities with a tight deadline. Describe a situation where you had to push back on a stakeholder who was asking for something you didn't think was the right call. Tell me about a time you made a decision with incomplete information. How did you decide and what was the outcome? Have you ever had to escalate an issue? Walk me through the situation and what you escalated and why. Tell me about a time you had to learn something quickly to get something done.
The framing they kept coming back to was something like: we're a big, complex organization with a lot of stakeholders and regulatory obligations. We need people who communicate clearly and know when to escalate.
I think they're specifically looking for people who won't just quietly do the wrong thing because a manager asked them to. The escalation question felt like a values check, not just a behavioral competency check.
One thing I'd flag: they do ask about ethics somewhat directly. Not in an aggressive way, but one interviewer asked 'what would you do if you noticed a colleague was cutting corners in a way that might have compliance implications?' Have an honest answer ready. This is a bank. Compliance isn't decoration.
Overall the behavioral prep I'd done (STAR format, a handful of strong stories from each past role) transferred well. Just make sure at least one of your stories involves navigating ambiguity in a large org, because that maps directly to their environment.