Google

4 interviews about algorithms and data structures, plus 1 lunch interview. All 4 rounds of questions were about algorithms and data structures. The difficulty ranged from medium to hard, with one hard follow-up question. For the 2nd round interview

This job title requires a strong coding background and a challenging interview. A strong understanding of system design is also necessary. Whoever applies for this role must prepare extensively. Good luck.

The process was good and smooth, not too hard and not too difficult. It was also a very systematic way of generating and presenting information about the company. The entire experience was very smooth as well as very systematic.