Top 50
Prep plan
Updated weekly · Last refresh Aug 30

Brex Software Engineer Interview Questions

The questions to prepare for a Brex Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~9htotal time
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1
CodingStart here. 16 questions · ~178 min
Card Affordability CheckMedium
Practice

Determine whether a Brex rewards card can be purchased using matching gems and limited wild gems.

function implementationBrex
Purchase Adds Card If AffordableMedium
Practice

Atomically purchase a Brex card by checking catalog availability, balance, and updating player state.

function implementationBrex
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2
System Design16 questions · ~178 min
High-Throughput Card AuthorizationHard

Assesses system design for low-latency authorization with correct rule evaluation and scalability.

architectureBrex
Design a Banking IntegrationHard

Evaluates system design thinking for integrating with banking/payment infrastructure.

business requirementsBrex
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3
SQL & Data Manipulation11 questions + 3 drills · ~152 min
4
Behavioral & Leadership4 questions · ~44 min
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5
More topics3 questions · ~33 min
API Data Processing PipelineMedium

Tests pipeline design and iterative refinement under changing requirements.

data processingBrex
Brex Execution Interview StructureMedium

Evaluates your understanding of Brex's interview focus across execution, debugging, design, and values.

interview processtechnical interviewDebuggingBrex
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.