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
Meta logo
Meta
Medium
Software Engineer

Solve grid path and top‑k frequency

Part A — Grid Reachability with Obstacles: Given an m×n matrix of 0s and 1s where 0 indicates a passable cell and 1 indicates a blocked cell, starting...

Coding & Algorithms
4
0
31 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Compute vertical order of a BST

Compute the vertical order traversal of a binary search tree. Define coordinates so the root is at column 0, row 0; the left child is (col−1, row+ 1) ...

Coding & Algorithms
2
0
40 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software EngineerSenior+

Set up a Python interview environment

You can use AI coding tools. Prepare a clean laptop for a Python-based onsite and explain your steps: ( 1) Install pyenv and set up a project-specific...

Data Manipulation (SQL/Python)
10
0
76 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Compute top-N outgoing spenders

Add a feature to report the top N accounts by total outgoing payments across both immediate pays and scheduled payments. Implement: List<String> topNS...

Coding & Algorithms
3
0
24 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Implement encoding validation and grid shortest path

Part A — Byte-encoding validation: You are given an array of integers in [0, 255] representing bytes. Determine whether the sequence encodes valid cha...

Coding & Algorithms
3
0
36 people solved
Sep 6, 2025
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Meta
Medium
Software Engineer Locked

Validate parentheses and find k-th largest

This pair of problems evaluates mastery of fundamental data structures and algorithmic techniques: Problem A tests understanding of stack-based parsin...

Coding & Algorithms
6
0
65 people solved
Jan 6, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Answer four array/time/grid query questions

This set of four problems evaluates array manipulation and comparison, time parsing and minute-difference calculation, linear path enumeration with ex...

Coding & Algorithms
14
0
181 people solved
Jan 6, 2026
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Meta
Medium
Software Engineer Locked

Design a food ordering and delivery system

This question evaluates a candidate's ability to design scalable, reliable backend systems including API design, data modeling, state management, disp...

System Design
8
0
73 people solved
Jan 5, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Find shortest path in an OOP maze

This question evaluates graph traversal and shortest-path reasoning within an object-oriented codebase, focusing on state representation, neighbor exp...

Coding & Algorithms
2
0
38 people solved
Jan 5, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Add two binary strings

This question evaluates proficiency with binary arithmetic and string manipulation, focusing on carry propagation and handling of very long inputs wit...

Coding & Algorithms
3
0
33 people solved
Jan 5, 2026
Meta logo
Meta
Hard
Software Engineer

Design a product notifications system

System Design: Push Notifications and In‑App Messaging Platform Context Design a notifications platform for a large consumer mobile app with millions ...

System Design
2
0
45 people solved
Aug 14, 2025
Meta logo
Meta
Medium
Software Engineer

Handle last-minute track change

Behavioral Question: Switching Tracks Mid-Interview Loop You are midway through a software engineering onsite when the interview focus changes (e.g., ...

Behavioral & Leadership
2
0
34 people solved
Aug 14, 2025
Meta logo
Meta
Medium
Software Engineer

Find missing ranges in interval

Given a sorted unique integer array nums and two integers lower and upper defining an inclusive interval [lower, upper], return all missing ranges not...

Coding & Algorithms
2
0
31 people solved
Aug 14, 2025
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Meta
Medium
Software Engineer

Implement tree column grouping and minimal parentheses fixes

Part A — Binary tree column grouping: Given the root of a binary tree, group node values by their vertical columns from leftmost to rightmost using x-...

Coding & Algorithms
3
0
32 people solved
Aug 13, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Design ad click tracking and dashboard at scale

This question evaluates a candidate's skills in designing large-scale distributed systems including real-time data ingestion and aggregation, storage ...

System Design
4
0
46 people solved
Jan 1, 2026
Meta logo
Meta
Medium
Software Engineer

Design a mini banking system

Design a mini banking system In-Memory Banking System — Design and Implementation You are to design and implement an in-memory banking system that sup...

System Design
9
0
87 people solved
Aug 7, 2025
Meta logo
Meta
Hard
Software Engineer

Design user top-10 songs service

Design user top-10 songs service Design a Service to Compute Each User's Top 10 Songs Context You are designing a backend service for a large-scale mu...

System Design
2
0
31 people solved
Aug 7, 2025
Meta logo
Meta
Medium
Software Engineer

Solve linked-list and top-K algorithm tasks

Question Given a singly linked list, return the k-th node counted from the end. Given an integer array, return the top k most frequent numbers. Given ...

Coding & Algorithms
6
0
52 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Solve linked list, top-K, and string reduction

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...

Coding & Algorithms
5
0
38 people solved
Jul 31, 2025
Meta logo
Meta
Hard
Software Engineer

Design coding platform leaderboard system

Design coding platform leaderboard system System Design: Scalable Coding Platform with Live Global Leaderboard Context Design a coding challenge platf...

System Design
15
0
83 people solved
Jul 29, 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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