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Updated weekly · Last refresh Oct 9

Cisco Software Engineer Interview Questions

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

50questions
~10htotal time
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1
CodingStart here. 11 questions · ~132 min
Minimum Time Path in TreeHard
Practice

Find the shortest walk through mandatory nodes in a tree using subtree pruning and the unique start-to-destination path.

dfsbfsAlgorithmsCisco
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2
SQL & Data Manipulation3 questions + 2 drills · ~56 min
Inner vs Outer JoinMedium
Practice

Use an outer join to retain departments without employees and compare its result with an inner join.

null handlingJoinsjoin typesCisco
Nth Salary SQLMedium
Practice
Practice drill

Use ranking to return the nth distinct salary from an employee table.

system designnull handlingsqlBBirdeyeDDatafortuneCisco
SQL for Operational InsightsMedium
Practice
Practice drill

Aggregate monthly incident volume, resolution rates, and resolution times for Cisco support teams.

Joinssql queryData AnalysisCisco
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3
System Design10 questions · ~120 min
Kafka-like Queue in GoHard

Implement a simplified Kafka-like message queue in Go and explain an AWS deployment using EC2, ECS, S3, and Terraform.

cloud architecturedistributed systemsdata streamsCisco
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4
Security & Infrastructure11 questions · ~132 min
SSH vs TLSHard

Explain how SSH and TLS differ in purpose, handshake, identity, encryption, and common infrastructure use.

authenticationNetworkingcryptographyCisco
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5
Execution5 questions · ~60 min
Using AI Tools at WorkMedium
Recently asked

Assesses how you apply AI tools responsibly to improve engineering productivity and quality.

implementationCisco
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6
Technical Fundamentals4 questions · ~48 min
Physics Law ExampleEasy
Recently asked

Assesses your ability to explain concepts clearly using a concrete example.

Cisco
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7
More topics6 questions · ~72 min
Pointers and Product ArchitectureMedium
Recently asked

Assesses your systems thinking and your ability to connect low-level concepts to product architecture.

pointersarchitectureCisco
Optimizing Data Processing PipelinesMedium
Recently asked

Assesses your performance thinking for data processing systems and your optimization approach.

data processingoptimizationCisco
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.