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Interview Questions

Real questions from top companies in System Design/Architecture

700+ Easy450+ Medium650+ Hard
All CategoriesBehavioralSpark/Big DataSQLPython/CodingSystem Design/ArchitectureCloud/ToolsGeneral/Othereasymediumhard
1

What architecture are you following in your current project, and why?

System Design/Architecturehardairflowetljoin3.5 min read
CognizantHCLNagarroThoughtworks+1
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2

CDC During Migration - explain approaches for real-time Change Data Capture

System Design/Architectureeasy0.5 min read
MoonfareSnowflake
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3

Briefly explain the architecture of Kafka.

System Design/Architecturehardjoinoptimizationpartition3 min read
Delivery HeroGrover
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4

Describe the data pipeline architecture you've worked with.

System Design/Architecturehardjoinoptimizationpartition3 min read
Fragma Data SystemsGrover
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5

Explain the trade-offs between batch and real-time data processing. Provide examples of when each is appropriate.

System Design/Architecturehardjoin0.8 min read
ExpediaSwiggy
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6

Can you explain the trade-offs you made during the design process?

System Design/Architecturehard
7

Describe a project you worked on, focusing on the data pipeline and your role.

System Design/Architectureeasy
8

Describe a scenario where you had to optimize a slow-running data pipeline.

System Design/Architecturemedium
9

Designing Mixpanel - event-driven analytics platform

System Design/Architecturehard
10

Explain clustering with a real-time example.

System Design/Architectureeasy
11

Explain how to implement schema validation for incoming data streams.

System Design/Architectureeasy
12

Explain how you gather and define requirements for a complex data platform project.

System Design/Architectureeasy
13

Handle midstream schema changes gracefully.

System Design/Architectureeasy

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