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Amazon interview notes, page 21 of 159

FAANG / Big Tech

Most of these Amazon write-ups come from Software Engineers (1,092), then Data Scientists (182) and Product Managers (165). The most reported rounds are the technical phone screen (618), the behavioral / leadership round (309), the online assessment (228) and the system design round (159).

1581 interview notes · updated Oct 2026

Amazon·Software Engineer·Technical Phone Screen

Apr 2026
Amazon coding screen for a software engineer role. One question, path traversal on a nested structure, seemed straightforward until I actually had to handle the mixed dot-and-bracket notation cleanly.
  • Implement a function get(object, path) that retrieves a value from an arbitrarily nested structure of maps and arrays, where the path string uses dot notation for keys and bracket notation for array indices (e.g. "a.b[1].c.d[2][13]").

“My first instinct was to split on dots and call it a day, which obviously breaks the moment you hit a bracket.”

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Amazon·Software Engineer·Technical Phone Screen

Apr 2026
Amazon SWE interview with a grid pathfinding problem. Classic BFS setup but the twist with the one-time wall removal made it trickier than it looked at first glance.
  • Given an m x n binary grid where 1 means passable and 0 means blocked, find the minimum number of steps to travel from the top-left to the bottom-right cell. You can convert at most one blocked cell into a passable cell during your journey. Return -1 if it's impossible even with that conversion.

“My first instinct was plain BFS and I actually started coding it before remembering the conversion mechanic.”

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Amazon·Product Manager·Onsite - Product Sense / Strategy

Apr 2026
Amazon PM interview with a market sizing question about weddings. Not much else to report.
  • Estimate how many weddings the average person attends over the course of their lifetime.

“I blanked for a second and just started rattling off assumptions out loud.”

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Amazon·Software Engineer·Online Assessment (OA)

Apr 2026
Amazon OA for a new grad SWE role, one coding problem about counting subarrays that meet a specific remainder condition. Pretty niche problem, not your typical two-sum warmup.
  • Given an array of integers (PIDs) and an integer k, count the number of contiguous subarrays where the sum modulo k equals the length of that subarray.

“The problem wraps a modular arithmetic condition in a security tool story, which is fine but kind of distracting.”

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Amazon·Machine Learning Engineer·Technical Phone Screen

Apr 2026
Amazon ML Engineer technical screen, basically a grid pathfinding problem. Pretty standard BFS territory but the constraints were tight enough that you had to actually think about efficiency.
  • Given an m x n grid where cells are either empty or blocked, find the length of the shortest path between two given coordinates using only 4-directional movement. Return -1 if no path exists.

“BFS is the obvious move here and I went straight to it, which was fine.”

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Amazon·Data Scientist·Technical Phone Screen

Apr 2026
Amazon DS interview with a deep experiment design question about validating an automated package-allocation system against a manual baseline. One question, but it was dense enough to feel like a full case.
  • Design a rigorous experiment to prove that an automated package-allocation system outperforms the manual baseline. Cover randomization strategy, interference/spillover mitigation, primary and guardrail metrics, pre-specified analysis plan, power calculations, ramp/rollback criteria, anti-gaming measures, and a fallback approach if clean randomization isn't feasible.

“This one hit hard.”

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Amazon·Software Engineer·Onsite - Coding / Algorithms

Apr 2026
Amazon SWE coding round, basically one sliding window problem the whole time. Pretty standard stuff but I still managed to second-guess myself halfway through.
  • Given a string, find the length of the longest substring that contains no repeated characters.

“Started with brute force out loud which, in retrospect, probably wasn't the move.”

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Amazon·Software Engineer·Onsite - Behavioral / Leadership

Apr 2026
Amazon SWE behavioral round, one question about stepping outside your expertise. Pretty standard leadership principles territory but it still made me sweat a little.
  • Tell me about a time you had to solve a problem that was well outside your area of expertise. How did you approach it, what did you learn, and what was the outcome?

“I had a story ready but it felt a bit thin on the 'what I actually did to learn' part.”

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Amazon·Software Engineer·Technical Phone Screen

Apr 2026
Amazon SWE coding round, two questions back to back, both from the classic scheduling/interval problem family. Nothing too exotic but you need to actually know your data structures cold.
  • Given a list of meeting time intervals, determine whether a person can attend all meetings without any overlap.
  • Given a list of meeting time intervals, find the minimum number of conference rooms required to hold all meetings.

“Sort by start time and check adjacent pairs.”

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Amazon·Software Engineer·Hiring Manager Screen

Apr 2026
Interviewed for a business analyst role at Amazon, got one question that seemed straightforward but required more structure than I expected.
  • How would you identify inefficiencies in a team's workflow using data?

“I fumbled the opening a bit, started listing metrics before actually defining what 'inefficiency' means in context.”

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