I applied online through their job website. A few days later, I received a HackerRank challenge. This was followed by a phone interview with an engineer about a week later, and then an invitation to the on-site interview a week after that.

The on-site interview consisted of:

• Three technical interviews
• Lunch with an engineer
• A demo session for some of their new products

The on-site lasted approximately from 11 a.m. to 4 p.m.

All in all, the interview process went really smoothly! All the engineers I spoke to were friendly and helpful in answering questions and participating in the problem-solving process. The problems were harder than average interview problems, but still fair and doable with standard Cracking the Coding Interview-type knowledge.

The only complaint I'd have is that I was told there would be concurrency and systems design problems during the on-site, neither of which actually ended up happening.

Implementing interfaces, dynamic programming/recursive backtracking problems, problems that could only be solved through bit-manipulation.