QA Engineer Interview Questions UK: 8 Real Questions and What Interviewers Want

Applying for a QA Engineer job in the UK? Here is what you are likely to be asked. These questions come from our QA Engineer question bank of 16 questions, written for UK employers at mid-level level.

Eight QA Engineer interview questions, and what the interviewer is thinking

1. What is the difference between quality assurance, quality control and testing, and how does a QA engineer contribute to each?

Why they ask: They check you see QA as prevention, not just bug finding.

2. How do you create a test strategy for a new feature or product?

Why they ask: Strategy design is a core responsibility at QA engineer level.

3. Which quality metrics do you track, and how do you make sure they are not misused?

Why they ask: Metrics show whether you can measure quality sensibly.

4. How do you approach exploratory testing, and how do you make it structured and repeatable?

Why they ask: They check you can apply skilled manual testing, not just scripts.

5. How do you work within a CI/CD pipeline as a QA engineer, and what quality gates would you put in place?

Why they ask: They check you understand modern delivery and quality in the pipeline.

6. A critical bug is found in production just after release. What do you do?

Why they ask: They test your response to incidents and learning culture.

7. Tell me about a time you improved a quality process or introduced a new practice that raised the quality of a product.

Why they ask: They want to see proactive improvement beyond individual testing tasks.

8. What does a typical day for a QA engineer look like?

Why they ask: They check your understanding of the role's mix of activities.

A sample answer to question 1

What is the difference between quality assurance, quality control and testing, and how does a QA engineer contribute to each?

Quality assurance is process-oriented and preventative: it focuses on how we build software, with standards, reviews, definitions of done and clear acceptance criteria, so defects are less likely to appear. Quality control is product-oriented and detective, checking the output against requirements. Testing is the main activity within quality control, executing tests to find defects and give information about risk. As a QA engineer, I contribute to all three. For assurance, I take part in refinement to challenge requirements, suggest testability improvements and help define the definition of done. For control and testing, I design test strategies, write and execute functional and exploratory tests, and build automation. I also look at metrics such as escaped defects and defect leakage to improve our process. The best results come from shifting left, involving QA early, rather than being a gate at the end of the process.

Common mistake to avoid: Describing QA as the team that finds bugs at the end; Mixing up the terms

Want the rest?

Full model answers, key points and common mistakes for all 16 questions are on the QA Engineer interview questions page. The first five are free, no sign-up needed.