Caltech (California) Software Engineer Interview Questions

The questions to prepare for a Caltech (California) Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

Binary Search Implementation

Medium

Tests ability to implement and reason about a fundamental search algorithm.

SearchingAlgorithms

Caltech (California)

Linked List Reversal

Easy

Tests basic coding ability and pointer/data-structure manipulation.

RecursionLinked ListsArrays

Caltech (California)

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NUMA for VM Placement

Hard

Tests systems knowledge around CPU/memory locality and performance optimization.

Trade-offsRisk AssessmentScope Management

Caltech (California)

Real-Time Chat Architecture

Hard

Tests your ability to design scalable real-time systems with low latency and reliability.

Trade-offsRoadmappingRisk Assessment

Caltech (California)

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What Drives Your Best Work

Easy

Tests whether your motivation translates into ownership, KPI focus, prioritization, and clear stakeholder communication.

CommunicationUser NeedsLeadership

Caltech (California)

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Handling Missing Values

Medium

Tests data cleaning decisions and analytical impact of missingness.

Data WranglingCase WhenAggregations

Caltech (California)

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