I had multiple interviewers, which seemed to range from SE III to Principal in skill level. I had a lunch interview with three managers. It took all day. I was interviewed by very intelligent but very friendly people. It was a very positive experience.
One of the interviewers had me problem-solve how to protect against malicious code, which is something I wasn't very familiar with. We reasoned through various ways to protect the stack and to detect heap corruption.
The following metrics were computed from 14 interview experiences for the F5 Senior Software Engineer role in United States.
F5's interview process for their Senior Software Engineer roles in the United States is very selective, failing most engineers who go through it.
Candidates reported having mixed feelings for F5's Senior Software Engineer interview process in United States.