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Prep plan
Updated weekly · Last refresh Oct 17

X Development Software Engineer Interview Questions

The questions to prepare for a X Development Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 6 questions · ~89 min
Implement Look-and-SayMedium
Practice

Generate the nth look-and-say sequence term by applying run-length encoding to the previous term.

coding challengeArraysAlgorithmsX Development
String Reverse ExplanationEasy
Practice

Reverse a string while preserving every character, using Python string operations or a linear scan.

string manipulationX Development
Nested Geospatial ParsingMedium
Practice

Traverse arbitrarily nested geospatial points iteratively and retain coordinates inside an inclusive bounding box.

bounding boxesArraysjson parsingX Development
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2
Behavioral & Leadership4 questions · ~59 min
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3
More topics5 questions · ~74 min
Design a Cloud MigrationHard

Plan a safe, observable migration of an existing ML service to the cloud.

cloud environmentcloud architecturearchitecture patternsX Development
Backend for Real-Time Grid SimulationHard

Plan a resilient backend architecture for real-time electrical grid simulation in Tapestry.

Trade-offsTechnical Fluencyapi designX Development
Satellite Imagery Geospatial PipelineHard

Design a geospatial pipeline that ingests satellite imagery, processes spatial data, and serves reproducible datasets to machine learning models.

data integrationdata pipelinetransformationsX Development
IoT Telemetry Ingestion PipelineHard

Design a fault-tolerant telemetry pipeline for millions of smart grid IoT devices with streaming ingestion, quality controls, and replayable storage.

Data QualityStream ProcessingmonitoringX Development
Isolated Testing Environments PlatformHard

Plan delivery of a developer productivity platform for fast, isolated testing environments across early-stage project teams.

environment managementCI/CDdeveloper experienceX Development

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