Interviews
Test automation is not the senior SDET answer
The tool is not the decision. Senior test engineering begins with what failure costs, what evidence is trustworthy and who owns the response.
2 min read
Name a framework and the interviewer learns that you have used a framework. They still do not know whether you can design a test system.
Senior SDET questions are usually decisions disguised as tool questions. What deserves automation? Which signal can block a release? What makes a flaky test expensive? When does broader coverage reduce confidence instead of increasing it?
Start with the cost of being wrong
A payment duplication, a delayed notification and a misplaced pixel do not deserve the same strategy. The expected harm determines the evidence, environment and speed required from the test.
State the failure and its cost before choosing the layer. Otherwise the answer is just a preference for unit, integration or end-to-end tests.
A test is also an operational dependency
Every automated check consumes execution time, data, environments and attention. A test that nobody trusts does not merely fail to help. It teaches the team to ignore red builds.
The senior answer includes ownership: who investigates, how quickly, with which artifacts and when the check loses its right to block release.
Flakiness is an unresolved system behavior
Retrying can reduce noise while you investigate. It is not the investigation. The useful questions are whether the failure follows timing, shared state, environment instability, race conditions or a product behavior the test exposed accidentally.
Describe how you would classify the failure and what evidence would close each branch. That shows a system, not a cleanup habit.
Rehearse the tradeoff, not the definition
Take a scenario and answer in this order: risk, observable behavior, cheapest trustworthy layer, operational owner and the condition that changes the choice.
That is the structure interviewers can use when they decide whether you will improve reliability or merely add more tests.
