Top 33
Prep plan
Updated weekly · Last refresh Aug 30

Nextdoor Mobile Engineer Interview Questions

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

33questions
~5htotal time
Track your progressSign up free to work through all 33 questions and resume where you left off.
Start practicing free →
1
CodingStart here. 18 questions · ~170 min
Cycle Detection in Dependency GraphEasy
Practice

Use iterative DFS coloring to detect circular dependencies in an Applied Intuition simulation module graph.

dfsbfsGraphsNextdoor
Merge Overlapping IntervalsEasy
Practice

Merge overlapping intervals in a list of intervals.

ArraysSearchingSortingNextdoor
Real-Time Messaging With Offline SyncHard

Tests your ability to architect reliable real-time messaging with offline behavior and robust sync recovery.

QueueabstractionGraphsNextdoor
Local Profile Cache Data StructureMedium

Tests your ability to design efficient local caching for fast mobile reads and updates.

Hash TablesdeduplicationoopNextdoor
Image Caching and Async LoadingMedium

Tests your ability to design smooth image loading and caching strategies for mobile performance.

Hash TablesabstractionoopNextdoor
Resilient Networking Layer DesignHard

Tests your ability to build fault-tolerant networking for real-world mobile conditions.

Hash TablesQueueabstractionNextdoor
More Coding questions with a free account
2
Behavioral & Leadership14 questions · ~132 min
Balancing Technical Debt and DeliveryMedium

Tests prioritization under pressure: balancing technical debt, delivery commitments, and stakeholder alignment with clear ownership.

Stakeholder ManagementOwnershipPrioritizationNextdoor
More Behavioral & Leadership questions with a free account
3
More topics1 question · ~9 min
The finish line: interview-readyComplete all 33 questions to finish this plan.