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Updated weekly · Last refresh Oct 17

Affirm Software Engineer Interview Questions

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

50questions
~10htotal time
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1
CodingStart here. 11 questions · ~134 min
Parse JSON Records and Fraud FlagMedium
Practice

Parse JSON ticket records, group statuses by loan, detect fraudulent loans, and return results sorted by loan ID.

clean codeArraysAlgorithmsAffirm
Boolean Expression TreeHard
Practice

Build a boolean decision tree, evaluate signal values, and apply leaf modifications using depth-first traversal.

dfsData StructuresAlgorithmsAffirm
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2
SQL & Data Manipulation10 questions + 1 drill · ~132 min
Infer JSON SchemaHard
Practice

Infer scalar and list types from nested JSON records using PostgreSQL JSONB traversal.

Data Wranglingdata validationdata extractionAffirm
Detect Bug and Manage PIIMedium
Practice
Practice drill

Identify duplicate dictionary keys and return each bug's distinct PII values as a PostgreSQL array.

null handlingData ManipulationData StructuresAffirm
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3
System Design11 questions · ~134 min
RPC-Based Broadcast SystemHard

Design reliable RPC over a broadcast-only, non-persistent queue with unmodifiable clients.

latencydistributed systemsdata streamsAffirm
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4
Pipelines7 questions · ~86 min
Transaction Log to Archived CSVMedium
Recently asked

Assesses your data pipeline design and handling of time-based partitioning.

data processingETLAffirm
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5
Execution5 questions · ~61 min
What Roadmap Did You ChooseMedium
Recently asked

Evaluates planning, prioritization, and collaboration in roadmap execution.

roadmapAffirm
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6
Behavioral & Leadership3 questions · ~37 min
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7
More topics3 questions · ~37 min
Leading a Project End-to-EndMedium
Recently asked

Evaluates your ownership, technical decision-making, and ability to communicate tradeoffs.

architectureProject ManagementAffirm
Infrastructure Troubleshooting in AWSHard
Recently asked

Assesses incident troubleshooting skills and breadth of infrastructure knowledge in AWS.

InfrastructureTroubleshootingAffirm
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The finish line: interview-readyComplete all 50 questions plus 1 hands-on drill to finish this plan.