Skip to content

Brex

Corporate cards and spend platform pushing into agentic finance

Target this company

Interview in a few hours? A quick sprint for Brex

AI in interviews

medium confidence

Brex requires candidates to use AI in its coding exam, where you build a whole product quickly and must catch the AI's errors. Ask your recruiter which other rounds allow AI tools.

Checked 26 Sept 2025Source

Typical interview loop

How Brex usually runs it for applied AI and LLM engineer roles.

  1. Recruiter screen

    Focus: Motivation and fit

    A 30-minute intro call covering your background, interest in Brex and compensation.

  2. Technical phone screen

    Focus: Practical backend coding

    A 60 to 75 minute practical screen, often building a small backend service from scratch.

  3. AI-assisted coding exam

    Focus: Building with AI, judgment

    You build an entire product in a short window using AI tools, and are judged on how you speed up with AI and fix what it gets wrong.

  4. Onsite coding

    Focus: Clean code, data modeling

    Two hour-long coding rounds where a base problem is extended with new features.

  5. System design

    Focus: Consistency and availability

    An hour-long fintech-flavoured design round, with ledger and transaction-processing themes for senior roles.

  6. Values interview (plus debugging on some teams)

    Focus: Values, ownership, debugging

    A behavioral round against Brex's core values; some teams add a round fixing failing tests in an unfamiliar codebase.

Topics to prepare for Brex

The topics its loop weighs most, each with what interviewers check and what to study.

How it weights your plan

Selecting Brex when you build a plan multiplies each topic’s priority score:

AI coding round+50%
Coding+20%
Behavioral+20%
System design+10%

Official prep and resources

Public candidate write-ups

Ready to prepare for Brex?

Get a day-by-day plan that leans toward what Brex tests most.

Build my Brex prep plan

Company names and logos are trademarks of their owners, shown only to identify them. SAADHO isn’t affiliated with or endorsed by any of these companies.