What does an SDET interview cover?

SDET interviews usually cover coding (data structures and algorithms), automation framework design, API testing, SQL, CI/CD and testing fundamentals, plus scenario questions like how to test a given feature.

How should I prepare for an SDET interview?

Balance coding practice, automation framework design, API and backend testing, and testing theory; build a small end-to-end framework you can explain and do timed coding reps.

Which tools should an SDET know?

Common ones include Selenium or Playwright, TestNG or JUnit, REST Assured or Postman for APIs, SQL, and a CI tool such as Jenkins or GitHub Actions.

SDET Interview Prep Dashboard

This dashboard pulls your SDET interview preparation into one place — tracking topics, tools and readiness across Selenium, Playwright, API testing, CI/CD and more. It's built to give structure to interview prep instead of studying at random.

What SDET interviews cover

SDET rounds typically mix coding (Java or Python data structures and algorithms), automation framework design (Selenium/Playwright, TestNG, POM), API testing (REST Assured, Postman), SQL, CI/CD and testing fundamentals and scenario questions like "how would you test X?".

How to prepare

Balance the four pillars — coding, automation, API/backend testing and testing theory — rather than over-investing in one. Do timed coding reps, build a small end-to-end framework you can talk through, and practise explaining your test strategy out loud.

Track your readiness

Use the dashboard below to mark topics as weak, in-progress or ready, so you can see at a glance where to focus before your next round.