Sdet Interview Questions

4,404 sdet interview questions shared by candidates

1. Domain Round - Topics covered Roles and responsibilities, About the projects, About Test Framework, Test Plan, Test Scenarios, Agile, CI/CD - I demonstrated working CI/CD on my laptop (via screen share), a small program (remove duplicate elements from a string) 2. DSPS - Asked what all DS I knew and listed. Questions asked - a) remove duplicate elements from a string. Asked me to optimize to O(n). b)Stack - find min element and optimize it 3. Manager round - General questions about the project, work, etc 4. 2 hours coding - a)remove duplicate elements from a string asked me to optimize it. Yes, again same question. b) Selenium - web scraping - extract all links from a page and check for valid n broken links. c) Selenium - automate date field with parameters (not with hard coded value) and date navigation .
Jul 29, 2022

1. Domain Round - Topics covered Roles and responsibilities, About the projects, About Test Framework, Test Plan, Test Scenarios, Agile, CI/CD - I demonstrated working CI/CD on my laptop (via screen share), a small program (remove duplicate elements from a string) 2. DSPS - Asked what all DS I knew and listed. Questions asked - a) remove duplicate elements from a string. Asked me to optimize to O(n). b)Stack - find min element and optimize it 3. Manager round - General questions about the project, work, etc 4. 2 hours coding - a)remove duplicate elements from a string asked me to optimize it. Yes, again same question. b) Selenium - web scraping - extract all links from a page and check for valid n broken links. c) Selenium - automate date field with parameters (not with hard coded value) and date navigation .

SQL - Remove duplicate id in a column API - Payment API Endpoint, possible test scenario. Java - d/b finalize and garbage collector API - HTTP Verbs , option usage API - HTTP Status Code Performance testing - what is throughput and how to control ? API - Status code if the request resource is not authorized Testng annotation order Explain about hashmap CI/CD workflow
Sep 19, 2022

SQL - Remove duplicate id in a column API - Payment API Endpoint, possible test scenario. Java - d/b finalize and garbage collector API - HTTP Verbs , option usage API - HTTP Status Code Performance testing - what is throughput and how to control ? API - Status code if the request resource is not authorized Testng annotation order Explain about hashmap CI/CD workflow

he then directly moved to DSA he asked me about the DS concepts i know based on that he asked total 3 dsa questions 1st Q Valid Parenthesis 2nd Q Check whether the tree 2 is subtree of Tree 1 or not 3nd Q LCA in BST
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Software Development Engineer In Test (SDET) Intern

Interviewed at IDFC FIRST Bank

4.1
Sep 16, 2025

he then directly moved to DSA he asked me about the DS concepts i know based on that he asked total 3 dsa questions 1st Q Valid Parenthesis 2nd Q Check whether the tree 2 is subtree of Tree 1 or not 3nd Q LCA in BST

Write a method to find if 2 strings are anagrams. Write code to give all possible phone numbers given the digits in the number. This is basically translating something like 1800-myinterview to actual numbers.
Jun 30, 2010

Write a method to find if 2 strings are anagrams. Write code to give all possible phone numbers given the digits in the number. This is basically translating something like 1800-myinterview to actual numbers.

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