Guy got an offer as a Senior software engineer at Microsoft

The system design interview.

I used the site to get tips for system design, and then I did mock system design interviews. I also practiced behavioral questions and in general, gained confidence going into the interviews.

Read a lot of material so that you know in advance what to expect more or less in the interview (the fact that an interviewer can surprise you with a question does not mean that you cannot know what the structure of the interview is going to be). Also, practice a lot offline all the professional parts that you can practice on your own (Leetcode style). Finally, I recommend the IGotAnOffer platform because there is something unique about the experience of "standing" in front of an interviewer. I think that being interviewed before the actual interview with the type of questions that are asked at the top companies, makes you arrive much more prepared.