I applied through college or university. The process took 4 weeks. I interviewed at Illumina (San Diego, CA) in Mar 2016
Interview
Started with a university on-campus screen interview that lasted 30 minutes. I was contacted a week later saying that I would be brought onsite, which happened about three weeks later. I was interviewed for over four hours by about 10 different people, and I was told I'd hear back in a few day to a week. A week later, I was called to set up another phone interview with another manager, which I did a couple days later for 30 minutes. It took another week and a half for them to send me an email saying that I didn't get the offer but that it was "really close".
Overall okay experience, though I wish there had been more transparency.
Interview questions [1]
Question 1
They mostly asked hypothetical sort of technical questions in addition to stats questions.
Before the interview date, everything was arranged on a call and email for a day and time. On the day itself, after registering at the security counter, was brought into a meeting room where the interview was held, before the interviewers came in after a while.
Interview questions [1]
Question 1
An actual issue faced on the job was presented as a question for problem solving
If they want to interview itll move quick. Really clean cut interview, doesnt seem like your personality or character matters much. The interviewer was stern and made everything feel like a rush. Perhaps they already had a decision
Phone screen with HR into video interview with actual engineer. Would have been on site next interview. Job description did not match requirements they actually wanted, job was on site hire immediately.