It was very strange that I received a call for this position when my resume indicated no experience in hardware testing. The process began with two initial rounds of phone interviews focused on algorithms and OOP concepts, followed by eight back-to-back onsite interviews. It was quite exhausting.

The lunch interview was particularly tiring, as the interviewer continuously asked random behavioral questions. I barely had a chance to eat properly!

For the onsite interviews, prepare thoroughly for everything mentioned in the job description; expect numerous design questions. If you are fortunate, an interviewer might be understanding and offer guidance on these design challenges. Otherwise, they may rigidly stick to their own approach, forcing you to design it their way, even if it doesn't seem logical. To my surprise, most interviewers seemed unfamiliar with AWS.

However, I am glad I did not proceed, as this position felt like a step backward in terms of my professional experience.

Expect random behavioral questions that have no practical relevance. Prepare design questions, especially OOPS ones, properly and on a whiteboard. Coding questions are easy. I signed an NDA, so I can't disclose all details, but nothing was out of the blue.