Meta Interview Questions
Practice 1,129 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."
Solve binary tree, grid, and heap tasks
Answer the following independent coding tasks: 1) Range sum in a BST: Given the root of a binary search tree and integers low and high, return the sum...
Design coding platform with global leaderboard
Scenario Design a LeetCode-like online coding practice platform that also has a global leaderboard (e.g., Top K users by score) and can show a user’s ...
Compute unmatched parentheses length
Problem You are given a string s consisting only of characters '(' and ')'. Repeatedly remove any matched pair of parentheses as part of a valid paren...
Copy linked list with random pointers efficiently
Given the head of a singly linked list where each node has next and random pointers, create a deep copy of the list. First provide an O(n) time, O(n) ...
Analyze User Transfer Distribution in Initial Launch Period
P2P Payments: Transfers per User in the First 30 Days Scenario A new peer‑to‑peer (P2P) payments feature has just launched. You are asked to analyze h...
Determine Features for Effective Hashtag Recommendations
Hashtag Recommendation System Design Context You are designing a hashtag recommendation system for a social-media platform. Given a user u composing a...
Design and Validate Initial Restaurant Recommendation Model
Restaurant Recommendations on Facebook — First-Iteration Model Scenario You are tasked with designing a first-iteration machine-learning system to rec...
Determine Success Metrics for New Group Video-Call Feature
Scenario Meta is exploring a new group video-call feature. Questions 1. Beyond the provided tables/logs, what additional data sources or surveys would...
Interpreting metrics when autoplay videos reduce time‑spent but increase DAU
Autoplay Snippets: Time‑Spent Down, DAU Up — Explain and Test Context You are analyzing an A/B test where short autoplay video previews were enabled i...
Calculate Total Interactions for Each Product
Interactions +----------+-----------+------------+--------------+ | buyer_id | seller_id | product_id | interactions | +----------+-----------+-------...
Define Success Metrics for Euro-Chat Customer-Service Chatbot
Scenario An e-commerce company has deployed a customer-service chatbot ("euro-chat") to handle B2C support inquiries across web/app chat. The bot can ...
Analyze Free Shuttle Impact on Employee Participation Rates
Scenario You have panel data for 1,000+ sites over time (e.g., monthly). Some sites adopt free shuttle buses at different dates, while others never ad...
Convince Product Manager to Launch 'Show Similar Products' Button
Scenario Instagram is considering adding a "Show similar products" button on product-tagged content to boost shopping-related engagement. The feature ...
Classify Reviewers Using Bayesian Probability for Accuracy Analysis
Scenario Classifying reviewers as lazy or careful with limited labels Context (completed) You are auditing a pool of reviewers who can be either: - La...
Analyzing abuse in the content‑reporting system
Scenario: Measuring Valid Reports and Detecting Abuse in a Reporting System Context and Assumptions We analyze a user reporting system to understand: ...
Analyze Recent User Engagement in Video Calls
calls +-----------+-----------+---------------------+---------+---------+ | caller_id | callee_id | call_start_timestamp| country | call_id | +-------...
Build Trust Quickly with New Team Stakeholders
Behavioral: Cross-Functional Collaboration (Data Scientist, Onsite) Scenario You are interviewing for a data scientist role with significant cross-fun...
Choose Metrics for Evaluating Fake-User Classifier
Classifier Evaluation for Detecting Fake Users Scenario A sudden spike in daily average comments may be driven by fake users. You are asked to build a...
Build Predictive Model for Buyer Engagement Uplift
Predicting Engagement Uplift for a New "Show similar products" Button Scenario A new UI control (a "Show similar products" button) may change buyer en...
Design Experiment to Measure Shopping Feature Impact
Experiment Design: Measuring Instagram Shopping's Impact Scenario Instagram is launching an in-app Shopping feature (e.g., product tags, shop surfaces...