Brex Product Manager Interview Questions

1.Tell me about a time you spotted a broken customer experience — one that wasn't technically on your roadmap — and drove the fix anyway. What made you take it on, and what did it cost you?

2.Tell me about a written spec or product brief you wrote that actually changed what your team built. What was the disagreement before you wrote it, and what shifted?

3.Tell me about a time you pushed back on a quick fix and insisted on a more correct solution. What was the pressure to ship fast, and how did you justify slowing down?

4.Tell me about a time you delivered bad news to a stakeholder or executive — something they didn't want to hear. How did you frame it, and what happened after?

5.Tell me about the most ambiguous problem you've owned as a PM — one where you didn't have a clear brief, a clear owner, or even a clear definition of done. How did you decide what 'solved' actually looked like?

6.Walk me through a product proposal you wrote where the data or evidence was thin, but you still had to make a strong recommendation. How did you build the argument, and how did you handle the uncertainty honestly?

7.Brex processes card authorizations in real time — a merchant swipes, and we have milliseconds to approve or decline. As a PM, how do you think about what 'success' looks like for that system?

8.Brex's expense management syncs with accounting systems like NetSuite and QuickBooks. A finance team at a customer reports that their GL codes are occasionally mapping to the wrong accounts. How do you scope what's going wrong?

9.We're building a feature that lets Brex Empower customers set multi-currency budgets — a team in London has a budget in GBP, but most Brex infrastructure runs in USD. Walk me through the product and technical tradeoffs you'd think through before writing the spec.

10.Brex uses Kafka for event-driven communication between microservices. A PM on your team wants to add a feature where finance admins get an instant notification every time a transaction exceeds their policy limit. What should a PM understand about this architecture before committing to 'instant'?

11.Brex is considering migrating part of the expense reporting backend from a monolithic PostgreSQL schema to a more distributed data model using DynamoDB for high-throughput writes. As a PM, what would you want to understand before supporting that migration?

12.Brex wants to build a real-time spend analytics dashboard for CFOs — showing live card spend, budget burn rates, and cash runway. Engineering tells you that true real-time means querying Kafka directly, but your existing Snowflake warehouse only refreshes every 4 hours. How do you resolve this?

13.A Brex Card customer wants to set a simple spending rule: 'Block all transactions over $500 at restaurants.' Walk me through how you'd think about designing the policy engine that enforces that rule at authorization time.

14.Brex Business Account customers can move money between their Brex account and external bank accounts. How would you design the user-facing experience and underlying flow for an outbound ACH transfer, knowing that ACH is inherently asynchronous and can take 1-3 business days to settle?

15.Brex Spend Management lets admins set budget limits for teams and automatically enforce them. How would you design the budget enforcement system so that a team can't overspend, even when multiple cardholders are making transactions simultaneously?

16.Brex wants to build a reimbursement product where employees submit out-of-pocket expenses and get paid back via ACH. Walk me through how you'd design the end-to-end system — from submission to payout — and where the hardest product and technical problems sit.

17.Brex Empower serves large enterprises with hundreds of subsidiaries, each with their own chart of accounts, approval hierarchies, and compliance rules. How would you design a multi-entity expense management system where a transaction from a UK subsidiary is correctly attributed, approved, and reported under UK entity rules — not the parent company's US rules?

18.Brex wants to introduce a credit limit increase flow: a Brex Card customer's spend is growing, Brex's underwriting model flags them as eligible for a higher limit, and we want to proactively offer them an increase. Design the end-to-end system — from signal to offer to activation — including how you'd handle the risk that a customer's financial health changes between when we underwrite them and when they accept the offer.

19.Tell me about a time you had to align two teams with conflicting priorities to ship something. How did you get them to a shared decision?

20.Tell me about a time a customer complaint or support ticket led you to a much bigger product problem. How did you connect the dots?

21.Describe a time you changed the scope or direction of a feature mid-build — after engineering was already in flight. How did you handle it, and what did you owe the team?

22.Tell me about a time you had to represent your team's capacity or technical constraints to leadership — and leadership didn't like the answer. What happened?

23.You've just taken over a product area with no written specs, tribal knowledge scattered across Slack threads, and engineers who've been making decisions by default. What do you do in your first four weeks?

24.Tell me about a time you had to kill a feature or project you personally believed in. How did you make the call, and how did you communicate it?

25.Estimate the annual revenue Brex earns from interchange fees on its corporate card. Walk me through your assumptions.

26.Weekly active users on Brex's expense reporting product dropped 8% last week. No features shipped and no incidents were reported. Where do you start?

27.Brex wants to expand Brex Business Account by offering yield on idle cash balances. How would you size the market opportunity and decide which customer segment to target first?

28.Brex's mobile app has a 'submit expense' flow. You're told that 40% of users who start the flow abandon it before submitting. How do you figure out what to fix first?

29.Estimate how much Brex loses annually to card fraud — and tell me how you'd think about where a PM's leverage is in reducing that number.

30.Brex is deciding whether to build a native travel booking product inside Brex Empower or integrate with a third-party travel management company. How do you make that call?