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Meta interview notes, page 25 of 238

FAANG / Big Tech

Most of these Meta write-ups come from Software Engineers (1,194), then Data Scientists (489) and Product Managers (453). The most reported rounds are the technical phone screen (1,190), the product sense round (466), the system design round (255) and the behavioral / leadership round (205).

2377 interview notes · updated Jul 2026

Meta·Product Manager·Onsite - Product Sense / Strategy

Apr 2026
Meta product sense interview, one question about Facebook Groups. Pretty open-ended and I spent way too long on the problem definition before getting to actual ideas.
  • How would you design a product to drive deeper engagement within Facebook Groups?

“I went straight to features and the interviewer pulled me back to ask who exactly I was solving for.”

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Meta·Product Manager·Onsite - Behavioral / Leadership

Apr 2026
Interviewed for a PM role at Meta. One behavioral question about handling difficult conversations, which tracks with the kind of leadership-fit stuff they tend to probe on.
  • How do you handle difficult conversations?

“Pretty standard behavioral territory but I still fumbled it a bit.”

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Meta·Software Engineer·Technical Phone Screen

Apr 2026
Meta coding screen for a software engineer role. One question, pretty classic bracket matching problem. Nothing too wild but it's the kind of thing that trips you up if you haven't touched stacks in a while.
  • Given a string containing only bracket characters ('(', ')', '{', '}', '[', ']'), write a function to determine whether the string is valid. A valid string means every open bracket is closed by the matching type, and brackets are closed in the correct order.

“Stack problem, pretty textbook.”

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Meta·Software Engineer·Onsite - Product Sense / Strategy

Apr 2026
Meta PMM interview with a product optimization case focused on Amazon Seller Central. Short and specific, not the broad strategy question I was expecting.
  • How would you optimize the Amazon Seller Central listing experience, and what improvements would you suggest?

“Weird question to get in a Meta PMM loop but I rolled with it.”

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Meta·Software Engineer·Technical Phone Screen

Apr 2026
Coding round at Meta for a Research Scientist position. Just one problem but it had enough nuance to keep me on my toes for a bit.
  • You have two linked lists where each node holds a string value. Determine whether the full strings formed by concatenating each list's nodes are identical.

“My first instinct was to just collect all node values into two big strings and compare them.”

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Meta·Software Engineer·Onsite - System Design / Architecture

Apr 2026
Meta SWE system design round, one question, design Google Drive. Pretty open-ended and I spent the first few minutes just trying to figure out what scope they actually wanted.
  • Design a cloud file storage and sync system similar to Google Drive.

“Jumped straight into storage and APIs before nailing down the requirements, which I think hurt me.”

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Meta·Data Scientist·Technical Phone Screen

Apr 2026
Short stats question at Meta, probably a data or analytics role screen. Nothing crazy, just one conceptual question but it can trip you up if you're not precise with the language.
  • What is the difference between covariance and correlation, and when would you use each?

“Seemed basic until I started explaining it out loud.”

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Meta·Data Scientist·Technical Phone Screen

Apr 2026
Meta DS interview with two SQL problems built around a video-calling app scenario. Both questions came from the same pair of tables and the difficulty was less about syntax and more about not double-counting users across caller and recipient columns.
  • Given a call_logs table and a user_profile table, write a SQL query that returns the percentage of French users who made or received at least one call yesterday.
  • Using the same tables, write a SQL query that computes the average total call duration per U.S. daily-active user for today.

“The double-join tripped me up a bit.”

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Meta·Software Engineer·Onsite - System Design / Architecture

Apr 2026
Meta system design round focused entirely on a ticketing platform, the kind of question that sounds scoped until you realize they want you to cover everything from data models to flash sale queuing in 45 minutes. Dense but fair.
  • Design a ticketing system that supports event browsing, seat selection with holds, checkout, and refunds.
  • How would you handle seat reservation consistency to prevent double-booking across concurrent users?
  • How would you architect the system to handle flash sale traffic spikes without degrading the experience for all users?
  • Walk through the payment integration, specifically how you'd handle retries and avoid charging a user twice.
  • How would you partition your data storage to scale across many concurrent events?

“I jumped straight into the data model before clarifying scale and that was a mistake.”

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Meta·Software Engineer·Technical Phone Screen

Apr 2026
Meta coding screen, pretty standard binary search territory. One question, clean setup, nothing tricky about the problem statement itself.
  • Given a sorted array, find the index of the first or last occurrence of a target number.

“Classic binary search variant.”

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