Meta Interview Questions
Practice 1,126 real Meta interview questions for 2026. Covers top categories — Coding & Algorithms, Analytics & Experimentation, Data Manipulation (SQL/Python), Behavioral & Leadership, and System Design — across Software Engineer, Data Scientist, Machine Learning Engineer, Data Engineer, and Product Manager roles. Real questions from actual interviews with detailed solutions. Expect a software-engineering-heavy loop: timed algorithmic coding (trees, arrays, graph/maze problems, delimiter/CSV parsing), system-design prompts like leaderboards, flight search and online-judge architectures, and an increasingly common AI-assisted coding round that mirrors real workflows. Data Scientist rounds emphasize product analytics and experimentation—designing tests, diagnosing spend drops and bots, evaluating unconnected content, and writing SQL for multi-account, seller, and vehicle metrics. Machine Learning Engineer questions skew toward recommender and ranking work (place and friend recommendation, sparse-matrix ops, linear-regression derivations, newsfeed dislike models). Data Engineers focus on data modeling, ETL, capacity calculations, reservations/utilization queries, and production SQL/Python tasks. For interview preparation, prioritize timed coding practice, system-design templates, rigorous SQL drills (joins/CTEs/aggregation), clear A/B-testing frameworks, and concise STAR behavioral stories tied to measurable impact.

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Quantify Latent Demand for Group Video Calling Feature
Scenario A consumer messaging app is preparing to launch group video calling. You have access to rich data: message logs (timestamps, thread IDs), fri...
Construct a 95% Confidence Interval for Comment Counts
Comment Activity Analysis: Mean CI, Sampling Distribution, and 95th Percentile Context You have a simple random sample of users with their comment cou...
Design Metrics to Measure Inappropriate Content Severity and Prevalence
Harmful-Content Detection: Measurement Plan and Experiment Design Objective You are launching a new harmful-content detection system and must define h...
Detect and Reduce Spammy Friend Requests Effectively
Detecting Spammy Friend Requests Context Assume a consumer social platform where users can send friend requests (optionally with a short message). The...
Promote Inclusion and Overcome Barriers in Social-Commerce Team
Behavioral Interview: Barriers, Feedback, and Inclusion (Data Scientist — Social Commerce) Context You are interviewing for a Data Scientist role on a...
Improve Team Dynamics: Addressing Unwelcoming Behavior Effectively
Behavioral & Leadership (Meta, Data Scientist) — Onsite Scenario You are interviewing for a Data Scientist role and will be evaluated on past workplac...
Demonstrate Culture Fit and Motivation in Meta Interview
Behavioral Interview: Culture Fit and Motivation (Meta — Data Scientist, Onsite) Prompt Answer the following using the STAR framework (Situation, Task...
Analyze Algorithm's Impact on Diverse Demographics and Validate Causes
A/B Test: Heterogeneous Lift in CTR for a New Ad-Ranking Algorithm Context You ran a user-level A/B test of a new ad-ranking algorithm. The reported r...
Calculate Probability of Honest and Relevant Chatbot Answers
Chatbot Evaluation: Honesty and Relevance Scenario You are evaluating a customer-service chatbot. Define two events for any given answer: - H: the ans...
Evaluate and Experiment with Harmful Content Detection Model
Evaluating a Harmful-Content Detection Model: Offline and Online Context You are given a binary classification model that detects harmful content in a...
Answer key behavioral prompts effectively
Prepare responses for these behavioral prompts: 1. Proudest project: Describe the project you’re most proud of and why. 2. Conflict: Tell me about a t...
Design structure for top-K frequent elements
You are working with a large collection of items represented by integer IDs (e.g., product IDs, user IDs, etc.). Updates and queries arrive over time....
Prove high-quality pixels improve ad performance
Context You support an ads platform where each advertiser has a pixel. Pixel quality varies due to missing/invalid signals, which can affect attributi...
Compute sliding-window medians
Given an array nums and an integer k, compute the median for each contiguous subarray (window) of length k and return the sequence of medians in order...
Solve tree, array, and maze tasks
You are given a set of algorithmic problems from a software engineering onsite. 1. Tree path length: Given the root of a binary tree, return the numbe...
Solve diverse LeetCode algorithm problems
Question LeetCode 695. Max Area of Island LeetCode 380. Insert Delete GetRandom O( 1) LeetCode 19. Remove Nth Node From End of List LeetCode 1004. Max...
Explain behavioral experiences and decisions
Behavioral Interview Prompts — Onsite (Software Engineer) Context You are preparing for the onsite behavioral and leadership round for a Software Engi...
Measure whether posts strengthen friendships
Product question You are a Data Scientist on a social network. A stakeholder asks: “Do posts help strengthen relationships between friends?” Task Desc...
Evaluate expression without stack, constant space
Question Given a string s representing a valid arithmetic expression of non-negative integers, the operators +, -, `, /, and spaces (there are no pare...
Compute posterior fake probability using Bayes' rule
A platform runs an automated detector to flag fake accounts. - Prior probability an account is fake: \(P(F)=0.02\). - True positive rate (sensitivity)...