Brex interview questions

Showing 1–9 of 9 results

• Answer Behavioral QuestionsMedium

  This question evaluates a candidate's behavioral competencies such as ownership, communication under pressure, conflict resolution, accountability, and motivation reflected in long-term goals.

  BrexSoftware EngineerBehavioral & LeadershipTechnical Screen
• Build AI-Assisted Full-Stack Transactions AppMedium

  This question evaluates full‑stack engineering competencies including API design, data persistence, input validation, transactional integrity for monetary data, frontend-backend integration, automated testing, and developer documentation.

  BrexSoftware EngineerSystem DesignTechnical Screen
• Build a React color multi-select dropdown UIMedium

  This question evaluates front-end React skills including component architecture, state management, data-driven rendering, accessibility considerations, and performance trade-offs involved in implementing a multi-select dropdown that presents selected colors' properties.

  BrexSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Build a Simplified Venmo-Style Peer-to-Peer Payments App with AI ToolsMedium

  An AI-assisted coding round prompt: build a simplified Venmo-style peer-to-peer payments app with users, balances, payments and transaction history, using any AI coding tool. It tests scoping a vague prompt, exact money handling, atomic and idempotent payments under concurrency, and the ability to review and explain generated code.

  BrexSoftware EngineerSoftware Engineering FundamentalsOnsite
• Debug and Explain FixesMedium

  This question evaluates a candidate's debugging and root-cause analysis skills, familiarity with unit testing and regression prevention, and ability to modify a small codebase to fix defects within the coding and algorithms domain.

  BrexSoftware EngineerCoding & AlgorithmsTechnical Screen
• Design Points-from-Transactions ServiceHard

  This question evaluates system design and distributed-systems competency, focusing on transaction processing, idempotency and deduplication, monetary precision and rounding, consistency models, data modeling, and operational controls like observability and fraud prevention.

  BrexSoftware EngineerSystem DesignTechnical Screen
• Design a Peer-to-Peer Money Transfer SystemMedium

  Design a peer-to-peer money transfer product with accurate balances and history despite retries, crashes, and concurrent spending. Define APIs, transfer states, durable accounting, atomic movement, recovery, reconciliation, authorization, and the boundary between an in-memory prototype and production.

  BrexSoftware EngineerSystem DesignOnsite
• Implement discounted card purchasesEasy

  This question evaluates implementation-level skills in resource accounting and state management, specifically handling gem-cost mappings, per-color discounts, bounded arithmetic, and transactional updates to player state.

  BrexSoftware EngineerCoding & AlgorithmsTechnical Screen
• Splendor-Style Card Purchases with Gem Costs, Color Discounts and Concurrent BuysMedium

  Model a Splendor-style card game in code: check whether a player's five-color gem inventory can afford a card, make an all-or-nothing purchase, and apply discounts earned from cards already owned. A follow-up asks how to keep one player's simultaneous purchase requests safe and consistent.

  BrexSoftware EngineerSoftware Engineering FundamentalsTechnical Screen