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4,402 sdet interview questions shared by candidates

General questions about Object-Oriented Programming concepts. Questions on SOLID principles and high-level questions about design patterns. Questions on HTTP concepts and API testing, UI testing with different kinds of selectors (some of XPath and CSS). Finally, a coding challenge of basic to intermediate difficulty; that should take 10-20mins at most. There were also questions about experience in other areas, like mobile testing or performance testing (if you have it.)
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Software Development Engineer In Test (SDET)

Interviewed at Unosquare

4.1★
Feb 22, 2025

General questions about Object-Oriented Programming concepts. Questions on SOLID principles and high-level questions about design patterns. Questions on HTTP concepts and API testing, UI testing with different kinds of selectors (some of XPath and CSS). Finally, a coding challenge of basic to intermediate difficulty; that should take 10-20mins at most. There were also questions about experience in other areas, like mobile testing or performance testing (if you have it.)

A very common question in Software Development Engineer (SDE) interviews is:"Tell me about yourself."This question is almost always asked to start the interview. While it seems simple, it's crucial. Interviewers use it to:Break the iceGet an overview of your backgroundAssess your communication skillsSee how you connect your experience to the roleIt's important to prepare a concise and relevant answer that highlights your skills and passion for software development.

Software Development Engineer In Test (SDET)

Interviewed at CodSoft

3★
May 15, 2025

A very common question in Software Development Engineer (SDE) interviews is:"Tell me about yourself."This question is almost always asked to start the interview. While it seems simple, it's crucial. Interviewers use it to:Break the iceGet an overview of your backgroundAssess your communication skillsSee how you connect your experience to the roleIt's important to prepare a concise and relevant answer that highlights your skills and passion for software development.

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