Top 50
Prep plan
Updated weekly · Last refresh Aug 30

Harvard University Software Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 12 questions · ~105 min
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsHarvard University
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsHarvard University
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2
Pipelines12 questions · ~105 min
Real-Time Dashboard Pipeline DesignHard

Approach for building near-real-time dashboard pipelines with streaming, orchestration, and data quality controls.

Stream ProcessingSchedulingDependenciesHarvard University
Handling Missing Data in PipelinesMedium

Approach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.

InfrastructureETLBatch ProcessingHarvard University
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3
Execution12 questions · ~105 min
Communicate Trade-offs Under ConstraintsEasy

Explain how you communicate scope, timing, and quality trade-offs when demand exceeds available engineering capacity.

Trade-offsRisk AssessmentScope ManagementHarvard University
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4
Security & Infrastructure3 questions · ~26 min
Frontend Web Page SecurityHard

Evaluates your knowledge of common frontend security risks and mitigations.

web securityHarvard University
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5
System Design7 questions · ~61 min
API Rate Limiter DesignHard

Evaluates your system design skills for protecting Persistent Systems APIs under load.

api designperformanceHarvard University
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6
Behavioral & Leadership3 questions · ~26 min
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7
More topics1 question · ~9 min
SQL: Sum Orders by GenderMedium

Tests your SQL skills for joins and conditional aggregation.

sql queriesAggregationsHarvard University
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.