Google's hiring committee process, Googleyness, the types of questions you'll face, and how to prepare in 4 weeks.
Google typically runs 4–5 interviews: 2–3 coding rounds, 1 system design (for senior roles), and 1 Googleyness/behavioral round. After the loop, a hiring committee (people who didn't interview you) reviews the feedback packets and makes the hiring decision. This committee structure is what makes Google's process unique — and why "mostly positive" doesn't always result in an offer.
Googleyness covers: Collaboration and communication, Comfort with ambiguity, Passion for the problem space, Intellectual humility. Interviewers are looking for people who make others around them better. A brilliant jerk won't pass Googleyness. A humble person who asks good questions will.
Questions are typically LeetCode medium to hard. Google emphasizes optimal solutions — a working brute force is not enough for a Strong Hire. Think out loud, reason about time/space complexity, and discuss alternative approaches even if you don't code them. Common topics: arrays, trees, graphs, dynamic programming, string manipulation.
Google system design questions test scalability at Google-scale (billions of users). Focus on: distributed consistency, load balancing, database sharding, caching strategies, and real-time vs. batch processing. Google interviewers appreciate when you reference known Google systems (Bigtable, Spanner, MapReduce) and explain when you would or wouldn't use them.
Week 1: LeetCode arrays, strings, hashmaps (easy → medium). Week 2: Trees, graphs, BFS/DFS, recursion. Week 3: Dynamic programming, advanced data structures. Week 4: System design + behavioral stories (STAR for Googleyness). Do at least 2 mock interviews per week under real-time pressure — not just reading solutions.