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Updated weekly · Last refresh Aug 30

Anthropic Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 15 questions · ~147 min
Find Infinite Loop InstructionMedium
Practice

Simulate Anthropic Claude Code bytecode and return the first instruction in a repeated machine-state cycle.

DebuggingAnthropic
Count URLs Matching DomainMedium
Practice

Traverse a URL graph with BFS and count unique reachable URLs belonging to a specified domain.

parsingAnthropic
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2
System Design14 questions · ~137 min
Batch GPU Inference APIHard
Recently asked

Evaluates your ability to design scalable inference services with throughput and portability in mind.

api designscalabilityAnthropic
Global Model Weights DistributionHard
Recently asked

Tests your design for reliable, scalable artifact distribution across many clusters.

cloud architecturescalabilityAnthropic
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3
Execution14 questions · ~137 min
Discuss a New Product IdeaMedium

Assesses how you structure product reasoning, define users, and communicate impact.

Anthropic
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4
Behavioral & Leadership4 questions · ~39 min
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5
More topics3 questions · ~29 min
Model Downloader Pipeline DesignMedium

Assesses systems thinking for efficient data transfer and throughput-aware design.

data pipelineAnthropic
Session PersistenceMedium

Assesses your security and infrastructure approach to maintaining user sessions reliably.

persistencesession managementAnthropic
Mode and MedianEasy

Tests your SQL or data manipulation skills for basic statistics.

statisticsAnthropic
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Rolling 30-Day Active UsersHard
Practice
Practice drill

Calculate daily rolling 30-day active users from a BCG event log using CTEs, date intervals, and distinct aggregation.

Window FunctionsDate FunctionsRunning TotalsAnthropicAtlassianThe Boston Consulting Group
Token Consumption Moving AveragesMedium
Practice
Practice drill

Use aggregation, joins, and window functions to calculate three-day token averages and cumulative usage for enterprise Claude accounts.

sqlAnthropic
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

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