What kind of specific questions to expect for onsite interview at labs126 for a Quality Assurance position?
One of the sad realities of QA at Amazon is there is much less standardization in the expectations of that role than others. For example getting interviewed as an sde is a much more reliable experience because the sde bars are more concrete. So really only someone at lab 126 would know what you should expect.
Test strategy, planning, automation approach, test case development for situations, non functional testing, QA methodologies, bugs, priorization, dealing with ambiguity. Scripting, knowledge of test frameworks, and some coding problem solving. On non tech side - Leadership principles. Consider 40% tech and 60% LPs.
If it's an automation role you could be asked to write simple framework to test login to page using excel sheet with credentials.
Which level .. is it senior qa??
It is for entry level QA
Expect more questions along test plan, test case enumeration with couple of coding questions with basic dat structures like array , strings