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Google interview notes, page 117 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·Product Manager·Onsite - Product Sense / Strategy

May 2026
Google PM-style estimation question about a hypothetical contact lens product that records HD video and syncs to the cloud. One question, pretty open-ended, the kind where you can go in a dozen directions and second-guess yourself the whole time.
  • Google has invented a contact lens that shoots HD video and syncs footage to the cloud. How much total storage capacity should Google allocate to support this product?

“I started with user volume and worked down to per-user storage needs, which felt right, but I kept second-guessing my HD video size estimates mid-answer.”

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Google·Data Scientist·Onsite - Behavioral / Leadership

May 2026
Behavioral round at Google for a Data Scientist role. The focus was on research background and how you handle cross-functional work, which sounds straightforward until you're actually in it trying to pick the right project to talk about.
  • Pick a project from your résumé that best shows your research skills, and walk through a time you worked with a cross-functional team, including what made it hard and how you handled it.

“This is basically two questions stitched together and I did not handle the seam well.”

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Google·Software Engineer·Technical Phone Screen

May 2026
Google technical screen, probably for a backend or software engineering role. Just one question but it had some depth to it.
  • What problems can arise from using a HashMap in a multithreaded environment, and how would you address them?

“I knew the basics: race conditions, infinite loops from rehashing in older Java versions, data corruption.”

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Google·Software Engineer·Technical Phone Screen

May 2026
Google SWE interview with a problem I hadn't seen framed quite this way before. The core idea was clean but the follow-up about doing the computation on compressed data without unpacking it is where things got interesting.
  • You have a long integer vector with lots of consecutive repeated values. Design a compact storage format that uses space proportional to the number of runs rather than the total length of the vector. Then, given two such compressed vectors of the same logical length, compute their dot product directly on the compressed form using a two-pointer approach, no decompression allowed.

“The run-length encoding part came pretty naturally.”

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Google·Product Manager·Onsite - Product Sense / Strategy

May 2026
Interviewed for a PM role at Google and got hit with a risk question that felt deceptively simple but really wasn't.
  • What project risks are you currently unprepared to address?

“The word 'currently' threw me.”

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Google·Product Manager·Onsite - Product Sense / Strategy

May 2026
Google PM interview with one of those product sense questions that sounds playful but actually requires real structure. Single question, no indication of outcome shared.
  • You're the first PM at a startup that has invented teleportation, but it only works between two small rooms right now. What's your first move?

“I spent way too long on the 'cool factor' of the premise and not enough time grounding it in basics.”

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Google·Product Manager·Onsite - Product Sense / Strategy

May 2026
Got a product design question for a newsfeed algorithm at Google. Pretty open-ended, which sounds fun until you're actually sitting there trying to figure out where to even start.
  • How would you design a newsfeed ranking algorithm for Google?

“I went straight into ranking signals without setting up the problem first, which was a mistake.”

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Google·Product Manager·Onsite - Product Sense / Strategy

May 2026
Google product design interview, one question about building a GIF creation tool. Pretty open-ended, which I wasn't fully prepared for.
  • Design a website for creating GIFs.

“I started with users and use cases which felt right, but I spent way too long on the surface stuff like what the upload flow looks like and not enough on the harder parts like how you handle frame editing or sharing.”

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Google·Technical Program Manager·Onsite - Behavioral / Leadership

May 2026
TPM loop at Google, just one question worth noting. Pretty standard behavioral territory but the technical angle made it trickier than expected.
  • Walk me through a situation where you had to apply technical judgment to make a decision.

“I fumbled this a bit because I went too broad.”

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Google·Product Manager·Onsite - Behavioral / Leadership

May 2026
Went through a Google PM interview that had a mix of behavioral and motivational questions. Nothing too surprising but the failure question took more out of me than I expected.
  • Tell me about a time a project failed or a major conflict blew up. What happened, how did you deal with it, and what did you take away from it?
  • Why do you want to work at Google, and how does the company's mission connect to where you want to take your career?

“I had a story ready but mid-answer I realized it sounded like I was blaming my team, which was not the vibe I wanted.”

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