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Google interview notes, page 78 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 product design interview, one question, no frills. They asked me to build a campus on the moon and I spent the first two minutes wondering if this was a joke.
  • How would you design and build a Google campus on the moon?

“I froze for a bit because I kept waiting for a constraint that never came.”

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Google·Software Engineer·Hiring Manager Screen

May 2026
Standard culture-fit screen for a Software Engineer role at Google. Nothing technically demanding, just a lot of open-ended questions about how you work and why you're here. Pretty low-pressure but you still need to have real answers ready.
  • Tell me about yourself.
  • Why do you want to join this team and work on this product area specifically?
  • What kind of work environment brings out your best performance?
  • How do you handle situations where the path forward is unclear or requirements are incomplete?
  • How do you respond to critical feedback on your work?
  • Walk me through how you typically collaborate with others on a team.

“The classic opener.”

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Google·Product Manager·Onsite - Product Sense / Strategy

May 2026
Google PM interview with a product design and estimation question rolled into one. Not the hardest thing I've ever done but the estimation piece tripped me up more than I expected.
  • How would you design an elevator system for a skyscraper, and how many elevators would you estimate are needed?

“I spent way too long on the design half and then rushed the estimation, which I think was the wrong call.”

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Google·Software Engineer·Technical Phone Screen

May 2026
Google SWE interview with a board game simulation problem. The kind of question that looks deceptively simple until you start thinking about state and move ordering, and then it gets messy fast.
  • You have a 1D board represented as a string of dots, tokens, and coins. Tokens can jump exactly 3 positions to the right, can't land on other tokens, and collect any coin they land on (not ones they jump over). What's the maximum number of coins you can collect with optimal moves?

“I spent the first few minutes just re-reading the constraints because I kept second-guessing whether tokens block each other or just the destination cell.”

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Google·Software Engineer·Onsite - Coding / Algorithms

May 2026
Google SWE coding round with a sweep-line interval problem. Pretty clean problem statement but the edge cases around overlapping endpoints and tracking the active set tripped me up more than I expected.
  • Given a list of on-call rotations, each defined as a name and a half-open time interval, produce a consolidated timeline where each output segment is a maximal contiguous interval with a constant set of on-call people. Gaps with nobody on call should be omitted, and names within a segment can be in any order.

“My first instinct was to sort by start time and merge greedily, which is wrong because overlapping intervals can end at different points and you need to split on every boundary, not just starts.”

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Google·Product Manager·Onsite - Product Sense / Strategy

May 2026
PM strategy question at Google, basically a market entry case asking whether Google should get into online furniture retail. Short but made me think harder than expected.
  • Should Google enter the online furniture-selling market?

“I went straight to competitive landscape and kind of forgot to first ask why Google would even want to do this.”

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Google·Software Engineer·Onsite - Coding / Algorithms

May 2026
Google SWE coding round with a recursive string parsing problem. Nothing crazy on the surface but the nested structure trips you up if you're not careful about how you handle the recursion.
  • Given a string representing a math expression built from nested add(x, y) and sub(x, y) function calls, compute and return the integer result. Both arguments can be integers or further nested calls.

“My first instinct was to reach for a parser library but obviously that's not happening in an interview.”

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Google·Software Engineer·Technical Phone Screen

May 2026
Google SWE coding round, pretty much what you'd expect. One grid problem, some follow-ups, and a lot of time spent hoping I remembered my graph traversal.
  • Given a 2D binary grid of '1's (land) and '0's (water), count the number of islands, where an island is a group of horizontally or vertically connected land cells.

“I went with DFS pretty much immediately.”

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Google·Data Scientist·Technical Phone Screen

May 2026
Google DS interview, one question that sounds deceptively simple but ends up being a lot to unpack in real time.
  • Walk me through your most impressive project: the problem, your approach, what you personally contributed, the technical challenges and trade-offs you faced, and what the actual outcomes were.

“This one sounds like a gimme until you're actually in it.”

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Google·Product Manager·Onsite - Product Sense / Strategy

May 2026
Google PM interview with a metrics investigation question about a drop in 'Open' rates for Google Docs. Single question, product analytics focus, no fluff.
  • You're the PM for Google Docs and you notice a 10% drop in 'Open' metrics. How do you investigate and respond to this?

“I started with segmentation instincts, which was the right call.”

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