Meta Behavioral & Leadership 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.

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"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."

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"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."

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"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."
Measure fake account prevalence
A social platform is concerned about fake accounts. Leadership wants to understand how serious the problem is and whether a new detection model or enf...
Describe leadership and inclusion examples
Prepare strong behavioral answers for the following prompts: - Tell me about a breakthrough project you led or meaningfully influenced. - Tell me abou...
Discuss conflicts, deadlines, and persuasion
Behavioral and Leadership Prompts for a Data Engineer (Onsite) Context: You are interviewing for a Data Engineer role. Answer each prompt with specifi...
Check diagonal equality in a matrix
Given an m x n integer matrix, determine whether every top-left to bottom-right diagonal contains identical values (all elements along each such diago...
Solve linked list, top-K, and string reduction
Solve the following algorithmic tasks: 1) Given a singly linked list, return the k-th node from the end (1-indexed). Describe one-pass and two-pass ap...
Handle palindrome & decimal addition
Question LeetCode 266. Palindrome Permutation Given two non-negative decimal number strings, implement addition that supports a decimal point. https:/...
Design searchable status & geolocation services
System Design: Searchable Short-Form Status Updates with Nearby Search Context Design a microblogging service where users post short text updates (thi...
Solve LeetCode array & stream problems
Question LeetCode 346. Moving Average from Data Stream LeetCode 249. Group Shifted Strings LeetCode 163. Missing Ranges Remove duplicates from a chara...
Find posts with >60s unconnected viewing time
Context You work on a social app where users can view posts. A view can be from a connected user (viewer is friends/connected with the post author) or...
Compute maximum score using up to 3 categories
Problem A library runs a summer reading program. Each book a student reads earns a certain number of points, and each book belongs to a category. A st...
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...
Find longest palindromic substring
Given a string s, return the longest contiguous substring of s that is a palindrome. Input - A single string s. Output - A string representing the lon...
Build harmful-content text classifier
You are given a text dataset and asked to build a model that predicts whether a piece of content is harmful (binary classification). Task - Propose an...
Design concurrent expiring job registry
Design (and discuss how you would implement) an in-memory job registry that supports concurrent access. Each job has a unique jobId and an expiration ...
Define metrics for harmful-content severity
Context You are a Data Scientist working on integrity/harmful-content for a social media product. The company wants a single “severity” metric (or met...
Compute CTR for peak vs non-peak hours
You work on a video ads platform. You are given three tables and asked to compare CTR during peak hours vs non-peak hours. Tables Assume the following...
Convert multi-currency revenue to USD totals
You are analyzing ad revenue recorded in multiple currencies and need to compute US revenue and global revenue in USD. Tables Assume the following sch...
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...
Write SQL for library analytics
Given a library database, write SQL to answer the following: 1) Count the number of books that are currently not returned (i.e., still checked out) an...
Implement range-sum tree and sort merged lists
1) Given a binary tree whose nodes store integer values, and two integers low and high defining an inclusive range [low, high], write a function that ...