It's been a while since I had the interview, but if I recall correctly, the first round was some behavioral and concept questions involving binary and hex conversions.
The next rounds I think were back to back, where the first one was behavioral again, with you talking about your experience and projects. Then the last round is an easy LeetCode question with a panel.
A variation of LeetCode two sum.
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Illumina's interview process for their Software Engineer in Test roles in San Diego, California is extremely selective, failing the vast majority of engineers.
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