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Updated weekly · Last refresh Aug 30

Niantic Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 27 questions · ~245 min
Implement LRU CacheEasy
Practice

Problem Design a data structure that implements an LRU (Least Recently Used) cache. The cache should support the following operations: - get(key): Retrieve...

Hash TablesQueueLinked ListsNiantic
Count Islands in a GridEasy
Practice

Use DFS on a matrix-as-graph to count connected components of land cells.

MatrixGraphsNiantic
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2
System Design9 questions · ~82 min
Social Graph Friends-of-FriendsHard

Evaluates your ability to design graph algorithms and reason about reachability in social networks.

Niantic
Role Based Access with InheritanceHard

Evaluates your ability to design authorization models and reason about permissions inheritance.

access controlNiantic
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3
Security & Infrastructure3 questions · ~27 min
Operating System FundamentalsMedium

Assesses your understanding of core OS concepts relevant to building reliable software.

fundamentalsOperating SystemsNiantic
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4
Behavioral & Leadership8 questions · ~72 min
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5
More topics3 questions · ~27 min
Reverse Linked ListMedium

Evaluates ability to implement a core linked list algorithm correctly.

normalizationsqlNiantic
Interview Process LogisticsMedium

Evaluates your ability to follow an interview process timeline.

Niantic
Probability of Reaching a GoalHard

Tests your ability to model independent events and compute cumulative probabilities correctly.

probabilitystatisticsNiantic
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Rank Campaigns by ROI Per RegionMedium
Practice
Practice drill

Aggregate Netflix campaign performance and rank campaigns by ROI within each region using a CTE and RANK().

Window FunctionsRankingGroup ByNianticNetflix
SQL Conversion Rate by CampaignEasy
Practice
Practice drill

Calculate daily campaign conversion rates with conditional aggregation, a CTE, and a campaign dimension join.

Date FunctionsGroup ByAggregationsNianticBrazeOutschool
Basic SQL and String ReverseEasy
Practice
Practice drill

Reverse Costar property search strings with PostgreSQL and flag rows whose stored expected value does not match.

sql queriesstring manipulationCostar
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.