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I think you should do as many side projects as you can and then prepare a lot of interview questions from the book. Luck is very important. Other than that, you need experience for around 2 to 3 years.

The interview process begins with a phone call from a recruiter. They will discuss the job, highlight why you might enjoy it, and inquire about your experience and interests. If there's a potential fit, they will schedule you for a phone screen with

The interview questions were very challenging. They asked me some algorithms regarding numbers. However, the solutions should be very quick and simple. If you consult mathematical books, you will find the answers.