The interview started at my local university. I didn't initially consider them, but a friend referred me, and I applied.

The interview was done in two parts:

• The first was a simple whiteboard question (some basic recursion/string processing).
• The second was a personality quiz (why should you work for Microsoft, what products don't you like, how could you improve them, etc.).

They rang back and told me I was considered for Round 2, and they flew me to Sydney, Australia (pretty awesome in itself!). This was an all-day event split into four parts.

• The first was a simple C string processing question, which I confidently answered, but the interviewer didn't show any signs if I was right or not.
• The second question was a low-level kernel question that I didn't know the answer to, but the interviewer helpfully explained it to me when I told him that I had designed my own kernel in assembly but didn't know this particular instruction.
• The third session, I was taken out and sat aside (no question), but took this opportunity to show the recruiter some personal projects I was working on (I think this is what got me in!).
• The fourth session, I had a headache and completely bombed.

They offered me a position on the spot, which I was thrilled about and accepted!

I honestly believe having personal projects will put you above every other candidate (though technical skills are required too!).

Design an algorithm in C for a string-processing task.

What assembly instruction can be used to ensure atomic access for people entering/exiting a hypothetical garden with one gate?

Write an algorithm to convert from RGB to HSV.

One-on-one. Take this time to show the interviewer your personal projects and achievements.