← Back to Directory

Meta interview notes, page 12 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·Software Engineer·Onsite - System Design / Architecture

Apr 2026
System design round at Meta for a software engineer role. The whole session was basically one big question about building an auction platform, and they pushed pretty hard on the real-time and consistency pieces. Felt like a solid interview but there's a lot of ground to cover in 45 minutes.
  • Design an online auction platform where users can browse auctions, place bids, and see other bids update in real time. Auctions have a fixed end time, the highest valid bid wins, and bids must always be strictly increasing.
  • How would you handle the bid acceptance pipeline to make sure bids are validated, persisted, and published in the right order without losing any?
  • How would you partition your message queue to maintain bid ordering per auction while still parallelizing processing across your service fleet?
  • Walk me through your QPS estimates for this system, including the fan-out effect from viewers watching each auction.
  • How do you ensure exactly one winner per auction when the auction ends, especially under race conditions or retries?
  • What mitigations would you add for fraud and last-second sniping behavior?

“This is a meaty prompt and I burned a few minutes just decomposing it.”

View Post

Meta·Product Manager·Onsite - Product Sense / Strategy

Apr 2026
Went through a product metrics round at Meta for a PM role. One question, pretty focused, but it pushed me to think carefully about what 'engagement' actually means in a group context.
  • What metrics would you use to increase the number of posts that receive comments within a group?

“I went straight for volume metrics and kind of regretted it mid-answer.”

View Post

Meta·Data Scientist·Technical Phone Screen

Apr 2026
Went through a Meta interview that hit on experimentation fundamentals. Pretty straightforward round but the question had more depth to it than I expected going in.
  • What is A/B testing and when should you use it?

“Thought I had this cold but I fumbled the 'when should you use it' part.”

View Post

Meta·Product Manager·Onsite - Product Sense / Strategy

Apr 2026
Meta PM interview, got a competitive strategy question that felt pretty open-ended. Not a lot of structure to work with from the original so I'm filling in what I can from memory.
  • If another team inside the company started building something that directly competed with your product, what would you do?

“I blanked for a second because I expected an external competition angle, not an internal one.”

View Post

Meta·Software Engineer·Onsite - Behavioral / Leadership

Apr 2026
Behavioral round at Meta for a software engineer role, two questions back to back. Nothing too wild but the second one made me think harder than I expected.
  • Tell me about the project you are most proud of. What was your role, what was the impact, and what makes it stand out to you?
  • Describe a situation where you delivered something different from what stakeholders originally asked for. Why did you deviate, how did you bring stakeholders along, and what happened in the end?

“I had a story ready for this and it came out okay.”

View Post

Meta·Software Engineer·Technical Phone Screen

Apr 2026
Meta SWE interview with a banking system extension problem. Pretty focused on getting the implementation right under pressure, and the ranking logic had some gotchas worth knowing about.
  • You have an existing banking system. Add a top_spenders(timestamp, n) function that returns the top n accounts ranked by total outgoing transfer amount up to that timestamp, formatted as 'account_id(total_outgoing)'. Deposits don't count, only transfers where the account is the source. Ties go alphabetically by account_id ascending. If fewer than n accounts exist, return all of them.

“The deposit exclusion is the part that trips people up.”

View Post

Meta·Product Manager·Onsite - Product Sense / Strategy

Apr 2026
Meta PM interview with a single product design question about the DMV. Not the flashiest prompt but it requires more thought than it seems.
  • Design a product for the DMV.

“My first instinct was to go straight to a mobile app and call it a day.”

View Post

Meta·Product Manager·Onsite - Product Sense / Strategy

Apr 2026
PM interview at Meta where the case study was framed around DoorDash. Two questions but they were really just one big question dressed up as two, which I didn't realize until I was halfway through my answer.
  • What goals and north star metric would you define for DoorDash?
  • How would you decide between shipping new features to grow order volume versus streamlining the restaurant onboarding process to expand supply?

“I went straight to GMV and the interviewer kind of just waited.”

View Post

Meta·Machine Learning Engineer·Onsite - Coding / Algorithms

Apr 2026
Meta ML Engineer interview with an AI-assisted coding round where they actually let you use tools like Copilot or Claude. The twist is they're not just watching you code, they're watching how you talk to the AI, whether you're steering it or just copy-pasting whatever it spits out.
  • You are given a coding problem and have access to an AI coding assistant during the interview. How do you approach decomposing the problem, prompting the AI effectively, reviewing its suggestions, and integrating them into a working, tested solution?

“This is the whole round basically.”

View Post

Meta·Technical Program Manager·Onsite - System Design / Architecture

Apr 2026
Meta TPM interview with a single system design question about building an election system for a university. Pretty open-ended, which was both the interesting part and the stressful part.
  • Design an election system for the University of Washington.

“The scope creep on this one was real.”

View Post