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Google interview notes, page 152 of 215

FAANG / Big Tech

Most of these Google write-ups come from Software Engineers (1,167), then Product Managers (686) and Data Scientists (125). The most reported rounds are the product sense round (667), the technical phone screen (660), the behavioral / leadership round (252) and the onsite coding round (214).

2146 interview notes · updated Oct 2026

Google·Software Engineer·Technical Phone Screen

Jun 2026
One-on-one technical interview for a Research Scientist role at Google where the interviewer digs into your resume projects and connects them to problems they're actually working on. You need to be ready to lead the conversation, not just answer questions.
  • Walk me through a project on your resume in technical depth, including the trade-offs you made and what you'd explore next.

“This is where the interview lives or dies.”

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Google·Software Engineer·Onsite - Behavioral / Leadership

Jun 2026
Interviewed at Google and got hit with a classic cross-team resource conflict scenario. Pretty standard for a PM or program management role but it still made me think harder than expected.
  • A resource from another team tells you they don't have bandwidth for a project you're depending on. How do you handle it?

“I went straight to the 'escalate to leadership' answer and the interviewer just kind of waited, like there was more they wanted.”

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Google·Product Manager·Onsite - Product Sense / Strategy

Jun 2026
Google PM interview with a single open-ended product design question. Short session, big existential crisis.
  • Design a time machine.

“I stared at the ceiling for a solid few seconds.”

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Google·Software Engineer·Onsite - Coding / Algorithms

Jun 2026
Google SWE coding round with a pattern matching problem that looks straightforward until you actually think about the wildcard semantics. The example tripped me up more than I expected.
  • Design a rules engine that maps binary input strings to configuration values using a pattern list, where patterns can contain '0', '1', '.', and '*' (wildcard matching any length of binary sequence). Implement a match function that finds the correct pattern for a given binary input and returns its associated value.

“The example input was patterns ('1*0', 5) and ('*10', 10) with input '110', expected output 10.”

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Google·Product Manager·Hiring Manager Screen

Jun 2026
Interviewed for a PM role at Google, pretty standard behavioral screen. Just the one question about strengths and weaknesses, which sounds easy until you're actually sitting there trying not to sound like a LinkedIn post.
  • What are your strengths and weaknesses?

“I gave a pretty safe answer.”

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Google·Data Scientist·Technical Phone Screen

Jun 2026
Google data scientist interview that went deep on statistics and estimation. The core problem was about percentile estimation from histogram data, and it kept branching into follow-ups I wasn't fully ready for. Left feeling like I handled the basics but fumbled some of the harder edge cases.
  • You have an approximate histogram of search query frequencies, where each bucket gives you a left boundary, right boundary, and a count of queries in that range. You don't have the raw data. How would you estimate the nth percentile of the underlying distribution?
  • Walk me through how you'd identify which bucket contains the target percentile rank.
  • Why is returning the midpoint of the bucket a poor estimate for the percentile?
  • How would you improve the estimate using interpolation within the selected bucket?
  • What edge cases would you need to handle, and what's the computational complexity of your approach?
  • What if the selected bucket is very wide, or the buckets are logarithmically spaced? How does that change your approach?
  • How would you handle many percentile queries efficiently over the same histogram?

“This was the main question and it sprawled into like four sub-parts.”

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Google·Product Manager·Onsite - Product Sense / Strategy

Jun 2026
Google PM interview, wearables-focused product design question. One question, pretty open-ended, and I spent way too long trying to sound clever instead of just picking a direction and running with it.
  • You're a PM at a wearable startup focused on biometrics. What product would you build?

“I froze a little because the prompt is so wide open.”

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Google·Product Manager·Onsite - Product Sense / Strategy

Jun 2026
Got a market sizing question for a Google PM role, just the one question from what I can tell. Pretty standard case interview territory but Slack specifically made it interesting.
  • Estimate the total addressable market for Slack.

“I went top-down first, which in hindsight was the wrong call because I ended up with a number so big it felt meaningless.”

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Google·Product Manager·Onsite - Product Sense / Strategy

Jun 2026
Interviewed at Google for a product manager role and got hit with the classic Google Docs improvement question. Not a lot of context to go on, but it's the kind of question that sounds easy and then you realize halfway through your answer that you've said nothing.
  • How would you improve Google Docs, and what metrics would you use to measure success?

“I went straight into feature ideas and only circled back to metrics when they pushed me.”

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Google·Product Manager·Onsite - Product Sense / Strategy

Jun 2026
Got a product design question for a PM role at Google. Just one question, but it's a big one: design TikTok. Lots of directions you could take it and I'm not sure I picked the right one.
  • How would you design TikTok as a product?

“I went straight into user segments and core use cases, which felt right at the time.”

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