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Updated weekly · Last refresh Sep 13

Top 50 api testing Interview Questions

The most frequently asked api testing questions across all roles and companies, ranked by real interview frequency. Updated daily.

50questions
~9htotal time
55companies covered
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1
CodingStart here. 14 questions · ~157 min
POST vs GET RetrievalMedium
Practice

Build a retrieval request by choosing GET or POST based on sensitive fields and encoded query length.

api requestsapiapi testingJPMorganChase
Deep Compare Nested JSONHard
Practice
Recently asked

Recursively compare parsed JSON responses while ignoring object key order and preserving array order.

json parsingapiabstractionApple
Basic JSON Parsing ScriptEasy
Practice

Parse a JSON response and verify that required key-value pairs are present and exactly match expected values.

Hash Tablesapi integrationArraysAlten Nederland
HTTP Server and Endpoint QueryHard
Practice

Start a local HTTP server, query its endpoint, and return the status and decoded response body.

api requestsCodinghttpCoreWeave
Troubleshooting API Issues Step by StepMedium
Practice

Classify API failures by priority and return ordered remediation steps using rule-based condition checks.

api requestsAPIsapiChargebee
Robust Unit and Integration TestingMedium
Practice

Validate whether unit and integration test definitions satisfy isolation, dependency, assertion, and uniqueness rules.

clean codeapi testingTestingQXO
Parsing and Validating JSONHard
Practice

Parse a JSON string and recursively validate its types, required fields, ranges, and patterns against a supplied schema.

data parsingCodingapi testingADP
Process Device DataMedium
Practice

Parse device telemetry JSON, filter overheated devices, and sort the remaining records by descending utilization.

apiapi testingArray ManipulationNVIDIA
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2
Behavioral & Leadership11 questions · ~123 min
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3
Execution14 questions · ~157 min
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4
Technical Fundamentals7 questions · ~79 min
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5
SQL & Data Manipulation3 questions + 3 drills · ~64 min
6
More topics1 question · ~11 min
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