I applied to kla tencor through an employee referral. Got a call from the hr and he talked a lot about the role and what would be expected of me if i took the job. I was pumped about the job because it matched my skillset. I didn't hear from the hr for over a month and then he scheduled my on site interview.

I interviewed with 5 other candidates. The interview started with a presentation by one of their directors introducing us about the company and what it did. Then we had to learn image processing algorithms mostly related to comparing images and drawing a histogram to show which algorithm was better and why. Then we had 6 one on one interviews with managers from each of the app dev team.

Resume specific questions and brain teasers.... They take the brain teasers seriously... I didn't prepare for them