Top 50 QA Engineer Interview Questions
The 50 most important questions to prepare for QA Engineer interviews. Questions from real interview reports rank first. Updated daily.
Reverse a string in Python using character traversal and return the reversed result.
CNA
Act Digital
Los Alamos National LaboratoryDetermine whether a string reads the same forward and backward using a two-pointer scan.
SnapLogicFind the first non-repeating character in a string using frequency counting and a second pass in O(n) time.
Cloudsek
Brightside Health
McAfeeUse a hash map to find two array elements that sum to a target in O(n) time.
iCapital
Paycom
Blend360Find the second highest salary in each department without using aggregate functions.
Credit Genie
Devoteam
Cisco Restaurant + BarFind the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
eClinicalWorksNNeenOpal Canada
InformaticaFind duplicate customer profiles by grouping on identifying fields and returning only repeated records.
Adtalem Global Education
University of Southern California
Blue Cross Blue Shield of MichiganIdentify repeated UST QA test executions using a CTE, GROUP BY, HAVING, and a project join.
UST
Kpmg Us
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