Meta Software Engineer Interview Questions

Meta Software Engineer interview questions focus heavily on algorithmic problem solving, clean coding, and systems thinking, with senior roles adding larger-scale system design and product-sense prompts. What’s distinctive about interviewing at Meta is the emphasis on writing correct, readable code under time pressure while narrating trade-offs, plus a structured hiring committee and team-matching stage that evaluates consistency of feedback across interviewers. Candidates should expect a recruiter screen, one or two timed coding screens in a shared editor, and an onsite loop with coding, behavioral, and — for higher levels — system or product design. Meta has also piloted AI-enabled coding environments for some interviews, reflecting real-world tooling trends. Effective interview preparation combines sustained practice on medium-to-hard algorithm problems, timed mock interviews in the same editor format, and a clear system-design framework for scoping and scaling solutions. Equally important is preparing concise STAR stories that show impact, ownership, and collaboration. During interviews, communicate assumptions, ask clarifying questions, handle edge cases, and iteratively optimize code while explaining complexity and trade-offs.

352 Questions 1 Company07.06.2026
Showing 20 results
Role
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Meta
Medium
Software Engineer

Implement right side view and local minimum search

Question LeetCode 199. Binary Tree Right Side View — Given the root of a binary tree, return the values of the nodes you can see ordered from top to b...

Coding & Algorithms
29
0
79 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Compute product of array except self

Given an integer array nums, return an array out where out[i] equals the product of all elements in nums except nums[i]. Do it in O(n) time using cons...

Coding & Algorithms
2
0
24 people solved
Jul 29, 2025
Meta logo
Meta
Easy
Software Engineer

Merge overlapping time intervals

Problem You are given a list of closed intervals intervals, where each interval is [start, end] and start <= end. Merge all intervals that overlap and...

Coding & Algorithms
2
0
34 people solved
Dec 15, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Design a Netflix-like video streaming service

This question evaluates competency in designing large-scale streaming platforms, focusing on distributed systems, content storage and encoding pipelin...

System Design
4
0
50 people solved
Dec 15, 2025
Meta logo
Meta
Medium
Software Engineer

Sum numbers formed by root-to-leaf paths

You are given the root of a binary tree where each node contains a single digit from 0 to 9. Each root-to-leaf path represents a number obtained by co...

Coding & Algorithms
4
0
39 people solved
Dec 8, 2025
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Meta
Medium
Software Engineer

Implement string and basic ML algorithms

You are given three implementation tasks that mix algorithms and basic machine learning models. --- Task 1: Longest substring with all distinct charac...

Coding & Algorithms
5
0
65 people solved
Dec 8, 2025
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Meta
Medium
Software Engineer

Explain key ML metrics and techniques

You are asked a set of short conceptual machine learning questions. 1. Confusion matrix and metrics For a binary classification problem: - Def...

Machine Learning
7
0
67 people solved
Dec 8, 2025
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Meta
Easy
Software Engineer

Design a time-versioned key-value store and find common free time

You are given two coding tasks. Task 1: Time-versioned key-value store Design an in-memory data structure that supports: - set(key, value, timestamp):...

Coding & Algorithms
4
0
32 people solved
Nov 12, 2025
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Meta
Medium
Software Engineer Locked

Design an Instagram-like auction platform

This question evaluates expertise in large-scale system design, including distributed systems, data modeling, real-time messaging, consistency models,...

System Design
1
0
23 people solved
Oct 30, 2025
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Meta
Medium
Software Engineer Locked

Implement several string, tree, and BFS problems

This multi-part problem evaluates proficiency with core data structures and algorithms: binary tree traversal with column-aligned output, string parsi...

Coding & Algorithms
6
0
50 people solved
Oct 30, 2025
Meta logo
Meta
Hard
Software Engineer

Solve common array/string/linked-list tasks

You may be asked one or more of the following independent coding tasks. For each task, implement an efficient algorithm and clearly state time/space c...

Coding & Algorithms
5
0
46 people solved
Oct 21, 2025
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Meta
Medium
Software Engineer

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....

Coding & Algorithms
3
0
51 people solved
Oct 21, 2025
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Meta
Medium
Software Engineer

Find shortest substring with N unique characters

You are given a string s and an integer n. Find the shortest contiguous substring of s that contains exactly n distinct characters. If there is no suc...

Coding & Algorithms
3
0
40 people solved
Oct 21, 2025
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Meta
Medium
Software Engineer

Design ticketing and coding practice platforms

You are asked two separate system design questions. --- 1. Design an online event ticketing platform (like Ticketmaster) Design a large-scale web serv...

System Design
2
0
30 people solved
Oct 18, 2025
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Meta
Medium
Software Engineer

Answer common behavioral prompts

You are asked several behavioral questions. Answer each with a concrete example from your experience (use STAR: Situation, Task, Action, Result), and ...

Behavioral & Leadership
2
0
25 people solved
Oct 12, 2025
Meta logo
Meta
Medium
Software Engineer

Answer conflict, ambiguity, feedback, difficult coworker prompts

Prepare behavioral answers for these prompts: 1) Describe a time you had a conflict with your manager. How did you resolve it? 2) Describe a project w...

Behavioral & Leadership
3
0
44 people solved
Oct 2, 2025
Meta logo
Meta
Medium
Software Engineer

Design a real-time ad impression aggregator

Design an ads impression aggregator service with the following requirements: - The system ingests a high-volume stream of impression events (each even...

System Design
3
0
32 people solved
Oct 2, 2025
Meta logo
Meta
Medium
Software Engineer

Find shortest path and compare BFS vs DFS

Given an unweighted graph (directed or undirected), explain how to find the shortest path between two nodes without writing code. Describe the algorit...

Coding & Algorithms
5
0
50 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Demonstrate communication and teamwork

Behavioral and Communication Interview (Software Engineer Onsite) Context: You are a software engineering candidate. Answer concisely using STAR (Situ...

Behavioral & Leadership
2
0
30 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Solve four data structure and algorithms tasks

1) Print the numbers at each level of a binary tree. Given the root, output the values level-by-level (each level on a new line or as a list of lists)...

Coding & Algorithms
4
0
38 people solved
Sep 6, 2025
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Meta Software Engineer Interview Prep
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Frequently Asked Questions

How difficult are Meta Software Engineer interview questions?
Meta Software Engineer interview questions are typically challenging and calibrated to the role level. Entry-level candidates face medium-to-hard algorithm and data-structure problems under time pressure, while mid and senior interviews add depth with larger-scale system design and architectural reasoning. Interviewers assess not only correct solutions but clarity of thought, trade-off analysis, coding quality, and communication. Expect to be evaluated on problem decomposition, complexity analysis, and edge-case handling. Difficulty varies by team and level, so prepare for both algorithmic rigor and practical engineering judgment when demonstrating solutions and trade-offs.
What does the Meta Software Engineer interview process look like and where does this role appear in the loop?
The typical process begins with a recruiter screen, followed by one or more technical phone or virtual screens that test coding and problem-solving. Successful candidates advance to a multi-round onsite or virtual “loop” consisting of two to three coding interviews, at least one behavioral interview, and for mid-to-senior roles one or more system or product design sessions. Software Engineer candidates therefore appear across coding rounds and design rounds, with behavioral rounds assessing impact and collaboration. Recently, some interviews may include an AI-assisted coding session as part of the loop, replacing a traditional coding round for select candidates.
What timeline should I follow to prepare for a Meta Software Engineer interview?
A structured timeline helps: for entry-level roles plan six to eight weeks of focused practice, for mid-level roles eight to twelve weeks, and for senior roles twelve weeks or more. Early weeks should emphasize algorithmic problem practice and mastering common patterns, followed by dedicated system design study and mock design interviews. In the final two weeks, increase timed mocks, rehearse behavioral stories with clear impact metrics, and simulate CoderPad-style sessions to build speed and clarity. Adjust intensity by your baseline skill level and aim for consistent practice rather than last-minute cramming.
What key subtopics should I focus on for a Meta Software Engineer interview?
Focus on core algorithms and data structures—arrays, strings, trees, graphs, heaps, hash tables, and dynamic programming—plus complexity analysis and memory trade-offs. For mid and senior candidates, prioritize system design: APIs, data modeling, storage choices, caching, load balancing, consistency, and monitoring. Also practice writing readable, testable code and debugging under time constraints. Prepare behavioral stories that show ownership and measurable impact. Depending on the team, expect domain-specific topics like concurrency, networking, or ML basics, so align study with the role description and past interview patterns.
What standout tips and common pitfalls should I be aware of when interviewing for Meta Software Engineer roles?
Standout tips include asking clarifying questions upfront, thinking aloud as you explore solutions, structuring your approach before coding, writing clean code with simple tests, and explicitly discussing complexity and trade-offs. Use mock timed interviews and practice on the same coding environment you’ll face. Common pitfalls are diving into premature optimization, remaining silent when stuck, failing to handle edge cases, and neglecting to align design choices with stated constraints. If you encounter an AI-assisted coding round, demonstrate how you validate AI suggestions and keep ownership of the solution and reasoning throughout the session.

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