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Updated weekly · Last refresh Oct 17

Reply Software Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 16 questions · ~137 min
Palindrome Check ImplementationEasy
Practice

Determine whether a string reads identically forward and backward using a two-pointer scan with constant extra space.

Basic AlgorithmsStringsReply
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2
Technical Fundamentals5 questions · ~43 min
Interface vs Abstract ClassMedium

Tests when to use an interface versus an abstract class, and what inheritance and implementation rules differ.

javaLanguage FeaturesabstractionReply
Core Pillars of OOPMedium

Explain polymorphism, inheritance, abstraction, and encapsulation, including how Java resolves overridden methods at runtime.

technical fundamentalsooptechnical knowledgeReply
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3
Security & Infrastructure15 questions · ~129 min
Infrastructure as CodeMedium

Evaluates understanding of modern infrastructure management practices.

InfrastructureReply
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4
Behavioral & Leadership7 questions · ~60 min
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5
More topics7 questions · ~60 min
DevOps CI/CD PipelinesMedium

Evaluates understanding of DevOps practices and CI/CD pipeline concepts.

CI/CDDevOpsReply
SQL vs NoSQL ChoiceMedium

Evaluates your understanding of data modeling tradeoffs and correct technology selection.

nosqlsqlReply
Describe Your Thesis WorkEasy

Tests your ability to summarize your research clearly and connect it to broader scientific goals.

RoadmappingRisk AssessmentScope ManagementReply
Overfitting MitigationHard

Evaluates your ML troubleshooting skills and practical mitigation strategies.

Machine LearningoverfittingReply
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Second Highest Without AggregatesHard
Practice
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
Rolling Transaction SQL and RankingHard
Practice
Practice drill

Calculate each user's 7-day rolling transaction average and daily spend rank using PostgreSQL window functions.

Window FunctionsDate FunctionsRankingGGreen ExchangeAANT SolutionRakuten
Scenario-Based Business CaseHard
Practice
Practice drill

Aggregate project outcomes and present a defensible SQL-based business case analysis.

project experienceJoinsbusiness problemTikTok
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.