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4,400 sdet interview questions shared by candidates

1. Tell me about yourself and your roles & responsibilities 2. Write a Java program to find the maximum sum subarray 3. Example of implementing multiple inheritance in Java 4. Why is String immutable? How does it differ from String Buffer? 5. How do you prepare test cases when requirements are unclear? 6. If 10 test cases fail inconsistently, how do you debug them? 7. Explain the Bug Life Cycle 8. How do you wait in Selenium until a file download is fully complete? 9. What is the purpose of DataProviders in TestNG? 10. Challenges faced while working on automation frameworks 11. What are TestNG Listeners? How do you implement them? 12. Write an XPath using the sibling axis 13. Describe a situation where you disagreed with a developer and how you handled it 14. Explain the Factory Design Pattern 15. When do you stop testing a feature? 16. How do you automate calendar controls in Selenium? 17. How do you get attribute values in Selenium? 18. Explain multithreading in Java 19. Global variables vs. environment variables in Postman 20. If a GET API takes 1 minute, can another HTTP method be used for quicker validation? 21. What is the purpose of the TRACE HTTP method? 22. How do you ensure test cases are complete and provide maximum coverage? 23. How do you test security vulnerabilities in an application? 24. Find duplicates in a list using Java Streams
avatar

SDET-2

Interviewed at ZEE5

3.1★
Dec 7, 2025

1. Tell me about yourself and your roles & responsibilities 2. Write a Java program to find the maximum sum subarray 3. Example of implementing multiple inheritance in Java 4. Why is String immutable? How does it differ from String Buffer? 5. How do you prepare test cases when requirements are unclear? 6. If 10 test cases fail inconsistently, how do you debug them? 7. Explain the Bug Life Cycle 8. How do you wait in Selenium until a file download is fully complete? 9. What is the purpose of DataProviders in TestNG? 10. Challenges faced while working on automation frameworks 11. What are TestNG Listeners? How do you implement them? 12. Write an XPath using the sibling axis 13. Describe a situation where you disagreed with a developer and how you handled it 14. Explain the Factory Design Pattern 15. When do you stop testing a feature? 16. How do you automate calendar controls in Selenium? 17. How do you get attribute values in Selenium? 18. Explain multithreading in Java 19. Global variables vs. environment variables in Postman 20. If a GET API takes 1 minute, can another HTTP method be used for quicker validation? 21. What is the purpose of the TRACE HTTP method? 22. How do you ensure test cases are complete and provide maximum coverage? 23. How do you test security vulnerabilities in an application? 24. Find duplicates in a list using Java Streams

What frameworks have you used for test automation? Explain the pros and cons of some of these frameworks. How would you optimize a test automation suite for maximum maintainability, reusability and performance? How would you go about testing an API and what kinds of test cases would you implement?
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Sdet

Interviewed at Glassdoor

3.9★
Jul 19, 2023

What frameworks have you used for test automation? Explain the pros and cons of some of these frameworks. How would you optimize a test automation suite for maximum maintainability, reusability and performance? How would you go about testing an API and what kinds of test cases would you implement?

Techical interview 01 1 Dijiktra's algorithm 2 child process vs orphan process 3 TCP vs UDP 4 Algorithm for input "acavffacff" ouput "ffffaaaccv" Technical Interview 02 1 Talk about any one project 2 System design based on that 3 Algorithm for input "rrrturdd" and output "3r1t1u1r2d" HR round 1 What do you know about the company 2 Why SDET role, and what do you look forward to 3 What are five most memorable things of your college life 4 Any experience where team mate was not co operative , how did you handle it
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Software Development Engineer In Test (SDET)

Interviewed at Junglee Games

4.2★
Aug 15, 2025

Techical interview 01 1 Dijiktra's algorithm 2 child process vs orphan process 3 TCP vs UDP 4 Algorithm for input "acavffacff" ouput "ffffaaaccv" Technical Interview 02 1 Talk about any one project 2 System design based on that 3 Algorithm for input "rrrturdd" and output "3r1t1u1r2d" HR round 1 What do you know about the company 2 Why SDET role, and what do you look forward to 3 What are five most memorable things of your college life 4 Any experience where team mate was not co operative , how did you handle it

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