Generally the interaction with the recruiter is pretty positive. When it comes to the onsite interview it was not great at all. At lease two interview rounds, the interviewers didn't know the correct optimal solution, so they basically raised false doubt about the correctness of the code, which I had to walk the code using the example given. In one round, the interviewer was not a developer at all, he didn't understand the perf difference between a list and hashset, so when I correctly used a hashset to help achieve o(1) lookup, he raised laughable question why I didn't use the result list to do that. With interview panel like this, and the hiring manager from India, the interview is just a waste of time, as it is very obvious they will not hire you no matter what great performance you have, unless you are Indians. Oracle sucks for a good reason, their hiring process is totally screwed.