Meta Analytics & Experimentation 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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Design Real-Time Auctions for Social Posts
Design a real-time auction feature for a large social photo and video app. A creator can attach an auction to a post. Viewers can place bids, and ever...
Design a live video comments system
System Design: Live Video Comments (FB Live-style) Design a system that supports real-time comments for a live video stream. Core user experience - Vi...
Design an in-memory database with TTL and history
Design and implement an in-memory key–field–value store with monotonic timestamps. Keys and fields are strings; values are integers. Provide these API...
Schedule and cancel delayed payments
Question Extend an existing in-memory payment system (immediate transfers between accounts, plus a top-N spenders/payers leaderboard) with scheduled p...
How to evaluate new listing notifications?
You work on an online marketplace. The product team wants to build a feature that notifies buyers when new products are listed that match their intere...
Design measurement to detect fake accounts
Context You work on a social platform. The only product surface you can rely on is friend requests (sending/receiving/accepting/declining). Assume you...
Write SQL for car rental utilization by city
SQL / Data Query Prompt (Car Rental) You are given four tables: user - user_id location - location_id - city car - car_id - car_size (e.g., compact, m...
Define metrics and data model for product features
You are interviewing for a full-stack/data-oriented role. For each of the following product areas, answer Product Sense and Data Modeling prompts. Cho...
Assess Group Video Chat Demand
You are a Data Scientist supporting a social communication product. The company is considering launching a Group Video Chat feature, but the feature d...
Design weapon-selling ad detection from posts
ML System Design: Detect weapon-selling ads from user posts You work on a platform with user-generated content (UGC): posts may include text, images, ...
Find a String Containing Another
Given a list of strings, determine whether any string in the list contains another string from the same list as a contiguous substring. Return one str...
Solve two linked list/array tasks
You are given two independent coding tasks. Task 1: Remove the N-th node from the end of a singly linked list Given the head of a singly linked list a...
Solve Tree Views, Columns, and Calculator
The interview note referenced three separate coding tasks. Solve each task independently. Task 1: Binary tree side views Given the root of a binary tr...
Write SQL for call analytics
You are given two tables. Table: calls - call_id BIGINT - sender_id BIGINT - receiver_id BIGINT - call_ts TIMESTAMP — stored in UTC - pickup CHAR(1) —...
How would you drive product growth?
Assume you are interviewing for a Product Growth Analyst role at Meta. Answer the following product growth and analytics cases. For each case, clarify...
Design a ticket or hotel reservation system
Design a reservation system (Ticketmaster-style event seats or hotel rooms). Requirements: - Users search availability by date/event. - Users select s...
Design a nearby places (proximity) service
Design a proximity search service like Yelp/Google Maps. Requirements: - Store places with (place_id, name, lat/lng, category, rating). - Query: “find...
Explain a recent project and measured impact
Behavioral & Leadership: High-Impact Project Deep Dive You are interviewing for a software engineering role. Provide a concise, metrics-driven walkthr...
How would you grow Meta products?
You are interviewing for a Product Growth Analyst role at Meta. For each of the following cases, explain how you would: (i) define the primary metric ...
Write SQL for call metrics
You have two tables. calls ( call_id BIGINT, sender_id BIGINT, receiver_id BIGINT, call_ts TIMESTAMP, picked_up BOOLEAN, call_type VARCHAR...