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hardAutomation Test Engineer interview question

The E2E suite fails on about 30% of runs and developers now ignore it. How do you turn this around?

What the interviewer wants to hear

  • Measure: identify which tests fail and why
  • Quarantine flaky tests out of the gate with owners and deadlines
  • Fix root causes: waits, data, environments, real bugs
  • Reduce and push tests down the pyramid
  • Protect the gate with policies and visible metrics

Model answer

First I gather data: which tests fail most, how often they pass on rerun, and the error types. Usually a small number of tests cause most failures. I move those out of the blocking gate into a quarantine suite that still runs and reports, and each one gets an owner and a deadline, so the gate becomes green and meaningful quickly. Then I fix root causes by category: fixed sleeps replaced with proper waits, shared data replaced with unique factories, shared environment problems solved with seeded or ephemeral environments, and genuine product race conditions raised as bugs. I also question whether every E2E test is needed and move checks to the API level. Finally I agree on a team policy: new tests must pass many repeated runs before joining the gate, and flake rate is shown on a dashboard so trust is earned back visibly.

Can you answer it under time pressure?

Take a timed hard round and get scored on every answer.

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