I just finished my Google L4 onsite (Kirkland) last week.
The phone screen was about a month ago: LeetCode plus Googliness.
The onsite was LeetCode plus Solution Design. I spent a whole month preparing System Design for it, and it didn't come up at all.
The interviewer mainly dug into projects I had done before, asking in detail about the difficulties I ran into and how I overcame them. This part was very detailed, mainly:
- How did the problem originally come about?
- How did I find and settle on a specific technical solution? What were the trade-offs?
- How did I write the Design Doc, and how did I convince my manager and the seniors to adopt and execute my design?
- What pushback did I run into along the way?
- Did the final result meet expectations? And so on.
I shared a design about reducing system latency, and it was actually launched to production. Overall, this round felt a lot like a Behavioral round that leaned heavily on technical depth.
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