i interviewed for a product designer role at brex in q1 2026. here's the breakdown. very few writeups for brex design roles so hopefully this is useful.
stages: recruiter screen portfolio review (60 min with a design hiring manager and one senior IC designer) design challenge (take-home, 5 days) onsite: design challenge debrief + two more rounds
portfolio review: they gave me the full 60 min but the real conversation was about 40 min of me walking, 20 min of their questions. what they dug into: how i decided WHAT to solve, not just how i solved it how i navigated conflicting input from pm, eng, and customers one case specifically about a time i pushed back on scope or direction
for a fintech product (brex is corporate spend management, cards, banking), they wanted to see experience with dense, information-heavy interfaces. if you have dashboard or b2b work in your portfolio, lead with that. consumer-app work is fine but frame it around complexity handled.
take-home challenge: can't share exact prompt but it involved redesigning part of a financial workflow. they emphasized: don't spend more than 6 hours. a few people i connected with said they clocked 10+, which is a mistake. they want to see your decision-making and prioritization, not a polished spec doc.
design challenge debrief (onsite): more of a structured conversation than a presentation. two interviewers had clearly read my submission. they asked: what would you cut if you had half the time, what would you go deeper on. a lot of "why this over that."
other onsite rounds: cross-functional collaboration: how do you work with eng partners during implementation. and a values/culture round that was lighter, more of a conversation.
overall: brex design interviews feel more rigorous than most series-d fintech loops i've done. they're looking for designers who are comfortable in ambiguity, can defend decisions, and understand business constraints. if your portfolio is all polished consumer apps with a "i made it prettier" narrative, tighten your framing before going in.