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Updated weekly · Last refresh Oct 30

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
~21htotal time
41companies covered
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1
api testingStart here. 4 questions · ~100 min
Test a Python FunctionMedium
Practice
Recently asked

Design Python unit tests for a Motorola signal report parser, covering aggregation, thresholds, rounding, and malformed input behavior.

api testingTestingpythonMotorola SolutionsMotorola
REST and Microservices MCQsMedium
Practice
Recently asked

Process REST API, testing, problem-solving, and microservices MCQs within a time budget and aggregate the results.

api testingTestingAlgorithmsDeliveroo
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2
api requests5 questions · ~125 min
Build a Basic HTTP FuzzerMedium
Practice
Recently asked

Generate deduplicated HTTP requests by mutating one query parameter at a time.

api requestsapi testingedge casesGoogle
HTTP Server and Endpoint QueryHard
Practice
Recently asked

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

api requestsCodinghttpCoreWeave
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3
Coding5 questions · ~125 min
Using Regular Expressions in TestsEasy
Practice
Recently asked

Use regular expressions to determine which test values fully match a supplied validation pattern.

CodingArraysStringsByteDance
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4
clean code7 questions · ~175 min
Async Operations in Three StylesHard
Practice
Recently asked

Implement one operation with callbacks, a Combine-style publisher, and async/await, then verify identical results.

clean codeswiftapi testingSpeechify
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5
api9 questions · ~225 min
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6
application development4 questions · ~100 min
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7
More topics16 questions · ~400 min
Money Transfer API DesignHard
Practice

Implement a REST-style money transfer operation with validation, atomic balance updates, and idempotency handling.

data persistenceapiapi testingRevolut
Requests Module POSTEasy
Practice
Recently asked

Construct JSON POST request arguments with headers, optional bearer authentication, and a timeout for requests.post.

api integrationapi requestsapi testingCoreWeave
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