call(back)

Brex

Fast, practical fintech loops — a coding exercise close to real work, a design round on card and ledger systems, and a hiring-manager conversation.

Typical loop

  1. 1Recruiter screen
  2. 2Hiring-manager conversation
  3. 3Practical coding round
  4. 4System design round on ledgers and cards
  5. 5Values and collaboration round

Questions

Callback's practice questions and the LeetCode questions Brex has been asking, filtered together.