A MathWorks submitted employee referral. Then the hiring manager called me and asked a few technical questions. It was followed by a programming challenge which I had two days to solve. It was a mildly difficult. Once I emailed the solution back. Another engineer called me and asked me a few technical questions. Then a recruiter called me and told me they were going to move me to an onsite interview. Before the interview, I was asked to put together some slides to discuss a previous project. The hiring manager reviewed the slides and gave his comments. All communication was via email. At the onsite interview, I first presented the slides to a group of about 10 engineers. It was then followed by five interviews, each of which was about 45 minutes. Most the interviews were mostly technical. I felt reasonably challenged. After the onsite interview, I was told that they were going to do reference and background check. In another week, I was offered the job. They were willing to wait until my interviews with other companies were finished. Very kind of them. Sadly, I did not accept the offer. My experience of MathWorks' interview process is very positive. They were moving extremely fast. I feel the interview process was a little too long, including two phone interviews, one programming challenge, and slides for presentation. But after all these activities, I felt that I got to know this company very well.