Zynga Principal Software Engineer interview questions

Applied through a referral for central tech team. Recruiter contacted me within 2 days. Scheduled an hour interview with the hiring manager. We talked about project experiences, tech stack, one coding problem. I passed this and get scheduled for 4 rounds of virtual interviews. 2 panel interviews about 1:30 hrs each (1 coding and 2 system design), 30 min cultural fit interview with senior director, and 45 min cross functional interview with program manager. All folks were on time and were very friendly.

I dropped out after the initial phone screen. I have six years gamedev experience and over a decade in web development with experience in multiple languages, but they started with "what is the difference between an object and an interface" and proceeded to move through comp Sci 104 for a principal level position. Change your process, maybe recognize you shouldn't be presenting your higher level candidates with junior-at-best level questions