Brex Interview Guide
~25% easy, 55% medium, 20% hard · 8 problem suggestions · Arrays & Strings, Hash Maps, Design
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Overview
Brex interviews reflect their fast-moving fintech culture. The coding difficulty is moderate-hard (55% medium, 20% hard), and system design focuses on corporate card infrastructure, expense management, and real-time transaction processing. Brex values engineers who can build correct financial systems quickly. The startup pace means they want people who ship, but the financial domain means correctness can't be compromised.
Interview Process
| Round | Type | Duration | Description |
|---|---|---|---|
| Phone Screen | Coding | 45 min | One medium problem |
| Onsite (3-4 rounds) | Mixed | 45 min | Coding, system design, culture fit |
Phone screen, then 3-4 onsite rounds: coding, system design, and culture fit. Timeline is 2-4 weeks — fast.
Difficulty Breakdown
55% medium, 25% easy, 20% hard. Moderate-hard with financial correctness expectations.
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