Junior Software Tester Interview Questions UK: 8 Real Questions and What Interviewers Want

Before your Junior Software Tester interview, it helps to see the questions from the interviewer's side. We have picked eight from our set of 15 and added the reason each one gets asked.

Eight Junior Software Tester interview questions, and what the interviewer is thinking

1. What is the software testing life cycle, and where does a tester contribute at each stage?

Why they ask: They check you understand the structure of testing work beyond running scripts.

2. What details would you include when raising a defect so that a developer can act on it straight away?

Why they ask: Bug reporting is a daily task, and clarity saves developers' time.

3. What is the difference between severity and priority? Can you give an example of high severity but low priority?

Why they ask: A classic question that checks your understanding of defect triage.

4. What are boundary value analysis and equivalence partitioning? Can you give an example?

Why they ask: Test design techniques are fundamental knowledge for any tester.

5. What are the different levels and types of testing, for example smoke, sanity, regression and exploratory testing?

Why they ask: They check core vocabulary and when each type applies.

6. You find a bug and the developer says it is not a bug. What do you do?

Why they ask: They test professionalism and use of evidence.

7. Tell me about a time you found a defect that others had missed. How did you go about finding it?

Why they ask: They look for attention to detail and curiosity, even from limited experience.

8. What does a junior software tester do on a typical day?

Why they ask: They check you have realistic expectations.

A sample answer to question 1

What is the software testing life cycle, and where does a tester contribute at each stage?

The software testing life cycle describes the stages of testing activity. It starts with requirements analysis, where testers review requirements for clarity and testability and raise questions early. Next comes test planning, covering scope, approach, resources and risks. Then test case design, where we write test cases and scenarios using techniques like equivalence partitioning and boundary value analysis, and prepare test data. In environment setup, we make sure the test environment and builds are ready, often with a smoke test to confirm the build is stable enough to test. Test execution follows, running the tests, logging defects and retesting fixes. Finally, test closure involves reporting results, lessons learned and archiving test assets. In Agile teams these stages happen within each sprint rather than in sequence, but the activities still apply. As a junior, I would mostly design and execute tests, log defects and support retesting.

Common mistake to avoid: Reciting stages without examples; Describing testing as only executing tests

Want the rest?

Full model answers, key points and common mistakes for all 15 questions are on the Junior Software Tester interview questions page. The first five are free, no sign-up needed.