Top 12
Prep plan
Updated weekly · Last refresh Nov 6

Google Full Stack Engineer Interview Questions

The questions to prepare for a Google Full Stack Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 3 questions · ~37 min
BFS or DFS TraversalEasy
Practice

Traverse a Gartner Peer Insights relationship graph with BFS or DFS while avoiding repeated nodes.

StackQueueGraphsGoogle
Longest Zero-Sum SubarrayMedium
Practice

Find the longest zero-sum subarray using prefix sums and a hash map in O(n) time.

ArraysArray ManipulationAlgorithmsGoogle
Trees and Maps for OptimizationHard
Practice

Build a tree-backed index with maps for efficient hierarchical path lookup.

CodingData StructuresTreesGoogle
2
System Design4 questions · ~49 min
Design a Crypto ATMHard

Design the ML components of a crypto ATM, including transaction risk scoring, serving, monitoring, and safe fallbacks.

system designml inferenceanomaly detectionGoogle
Cloud-Native API DesignHard

Explain a practical approach to designing reliable, secure, observable APIs for cloud-native services.

api designcloud architecturedistributed systemsGoogle
Reliability with Multiple ServicesHard

Design reliable infrastructure for integrating multiple first-party services, including failure isolation, observability, recovery, and safe ML operations.

backend integrationInfrastructuredistributed systemsGoogle
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3
Behavioral & Leadership4 questions · ~49 min
Leading Cross-Team Platform AlignmentMedium

Tests cross-team technical leadership, stakeholder alignment, influence without authority, and ownership on a complex project.

Stakeholder ManagementLeadershipcross-functional collaborationGoogle
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4
More topics1 question · ~12 min
Data Structures TradeoffsHard

Explain a data-structure choice using access patterns, complexity, memory, ordering, and measurable performance tradeoffs.

performanceData StructurescomparisonGoogle
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