I applied through a recruiter. The process took 6 weeks. I interviewed at Arista Networks (Burnaby, BC) in Jan 2015
Interview
The process started with an on-site interview where I was asked some knowledge questions about C++ and objects (such as const situations, virtual method table behaviour, polymorphism, and referencing non-virtual methods). This initial interview also included a simple coding exercise in the style of an ACM programming contest question.
The second interview had two parts, each with a different interviewer. The first part involved designing a stack. The second part was a discussion about data in EXEs and memory, including code, constants, variables, and parameters. We also talked about endianness and how variable-argument routine (e.g. printf) calls are structured on the stack.
Interview questions [1]
Question 1
I was asked to design a C++ stack that could handle arbitrarily-sized data for multiple different clients. This turned out to be simpler that it initially seemed, as the data size was fixed in advance for each client and thread-safety was not a concern.
Pretty good, not too complicated, was comfortable. Mostly LC questions, and was easy enough that you should be able to do it after doing NC150. good luck for the interview!
Starts with online test, then three rounds of technical interviews follow.
Not a lot of discussion, just go straight to the technical challenges which have to be solved in time
I interviewed at Arista Networks (Warsaw, Masovia)
Interview
By now I have had only first interview, that was focused on pure DSA. Despite that I would already recommend checking out gdb, cause it came in handy in my case.