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 AI

Design a Code Review Agent

Design an AI-powered code review agent that assists developers by reviewing pull requests and producing actionable feedback. The agent should be able ...

ML System Design
7
0
67 people solved
Mar 17, 2026
Meta logo
Meta
Medium
Software Engineer

Implement BFS-based maze solver

Maze Printing and BFS Solver You are given a 2D grid representing a maze. Each cell of the grid is one of: - '#' – wall (cannot be passed) - '.' – emp...

Coding & Algorithms
33
0
327 people solved
Dec 7, 2025
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Meta
Easy
Software Engineer

Implement four coding challenges

You are asked to solve the following four independent coding problems. --- 1) Block Placement Simulator (Tetris-like) You have an empty n x m grid (ro...

Coding & Algorithms
9
0
84 people solved
Feb 8, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI Locked

Solve Tree Columns And Maze Variants

This question evaluates tree traversal and column-based grouping skills along with grid-based graph search, state modeling, and handling dynamic maze ...

Coding & Algorithms
2
0
23 people solved
May 21, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Handle Cross-Team Alignment and Mistakes

The behavioral round focused on three prompts: 1. How do you align requirements across teams? 2. What is the biggest mistake you have made at work? 3....

Behavioral & Leadership
5
0
48 people solved
Apr 8, 2026
Meta logo
Meta
Medium
Software Engineer

Describe difficult project, conflict, and PM collaboration

Behavioral round (15 minutes) Answer the following prompts using concrete examples from your experience. 1. Most difficult project - Describe the m...

Behavioral & Leadership
5
0
74 people solved
Dec 15, 2025
Meta logo
Meta
Medium
Software Engineer

Count Distinct Values in a Sorted Array When K Is Small

Count Distinct Values in a Sorted Array When K Is Small Given an integer array sorted in nondecreasing order, return the number of distinct values. Le...

Coding & Algorithms
1
0
12 people solved
Mar 2, 2026
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Meta
Medium
Software EngineerSenior+

Design Queue And Taxi Matching Services

Answer both independent system design prompts. For each one, clarify requirements, propose APIs, describe core data models, explain the architecture, ...

System Design
2
0
30 people solved
Apr 9, 2026
Meta logo
Meta
Easy
Software Engineer Locked

Design a Trade Ledger Class

This question evaluates the ability to design class interfaces, choose and justify data structures for ordered storage, and reason about sorting behav...

Software Engineering Fundamentals
4
0
55 people solved
Feb 18, 2026
Meta logo
Meta
Medium
Software Engineer

Describe proudest project and cross-team work

Behavioral prompts included: 1. Describe the project you are most proud of. 2. Describe a time you worked across teams to deliver a result. For each, ...

Behavioral & Leadership
3
0
53 people solved
Mar 12, 2026
Meta logo
Meta
Easy
Software EngineerSenior+

Design an online auction system

Design a scalable online auction service. Users can: - Create an auction (item info, start/end time, reserve price optional). - Place bids while the a...

System Design
13
0
175 people solved
Mar 11, 2026
Meta logo
Meta
Medium
Software Engineer

Design a Real-Time Trending Hashtags System

Design the backend system that detects and serves trending hashtags from posts on a large social network (Facebook-scale). The service continuously in...

System Design
2
0
16 people solved
Mar 6, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Build a FastAPI summarization service

Implement a minimal but production-ready FastAPI service for text summarization. Requirements: - Expose an endpoint POST /summarize. - The request bod...

Coding & Algorithms
5
0
53 people solved
Jan 19, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Solve Maze and Suffix Problems

Solve the following two coding problems. Problem A: Find the shortest path through a maze with keys and doors You are given a 2D grid representing a m...

Coding & Algorithms
1
0
18 people solved
Apr 25, 2026
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Meta
Medium
Software Engineer Locked

Compute Exclusive Execution Times

This question evaluates understanding of nested function execution and precise exclusive-time accounting derived from chronological logs, emphasizing ...

Coding & Algorithms
0
0
15 people solved
May 25, 2026
Meta logo
Meta
Medium
Software Engineer

Describe conflict resolution and initiative

The behavioral round reportedly consisted of 7-8 standard questions. A polished version of the expected prompts would be: - Tell me about a time you h...

Behavioral & Leadership
5
0
75 people solved
Mar 4, 2026
Meta logo
Meta
Hard
Software Engineer

Design a price tracking system

Question Design a price tracking system for e-commerce sites (similar to price-history tools such as CamelCamelCamel or Keepa). The system ingests pro...

System Design
13
0
135 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Solve Tree Diameter and Palindromic Counts

This two-problem prompt evaluates proficiency in tree algorithms and recursion for computing longest paths in binary trees, along with string processi...

Coding & Algorithms
2
0
17 people solved
May 21, 2026
Meta logo
Meta
Medium
Software Engineer

Design an online auction system

Design an online auction system (eBay-style). Requirements: - Users create auctions with start/end time and starting price. - Users place bids; system...

System Design
8
0
62 people solved
Feb 25, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Troubleshoot a single-node web outage

This question evaluates operational troubleshooting, root-cause analysis, and resilience design skills for a single-node web server, testing a candida...

System Design
4
0
64 people solved
Jan 22, 2026
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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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