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

Discuss achievements, ambiguity handling, growth, and conflict management

Discuss achievements, ambiguity handling, growth, and conflict management Behavioral & Leadership Interview Prompts (Software Engineer — Onsite) Conte...

Behavioral & Leadership
2
0
27 people solved
Jul 15, 2025
Meta logo
Meta
Hard
Software Engineer

Design a Dropbox-like file storage and sync service

Design a Dropbox-like file storage and sync service Design a cloud file storage and synchronization service like Dropbox / Google Drive. The system sh...

System Design
7
0
55 people solved
Jul 15, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Extend BFS maze solver with keys and arrows

This question evaluates mastery of breadth-first search, state-space modeling for grid-based traversal, and handling augmented states like keys and on...

Coding & Algorithms
21
0
156 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Software Engineer AI Locked

Solve tree, array, and maze tasks

This set of problems evaluates proficiency in algorithms and data structures, covering binary tree diameter computation, array optimization for maximu...

Coding & Algorithms
2
0
26 people solved
Oct 17, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Design a flight search platform

This question evaluates understanding of distributed systems, API and data model design, large-scale data ingestion and indexing, search ranking and c...

System Design
1
0
26 people solved
Oct 17, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Design a live video comments system

This question evaluates skills in designing scalable, low-latency real-time systems, covering fan-out delivery, ordering and consistency semantics, du...

System Design
8
0
64 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Extend a BFS maze solver stepwise

This question evaluates proficiency in grid-based graph traversal and pathfinding, covering BFS mechanics, stateful reachability with keys and doors, ...

Coding & Algorithms
7
0
52 people solved
Feb 11, 2026
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Meta
Medium
Software EngineerSenior+ Locked

Design a Top-K trending items service

This question evaluates competency in large-scale system design, real-time streaming ingestion, distributed aggregation, and trade-offs between exact ...

System Design
8
0
96 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Solve maze tasks and compute shortest routes

This multi-part question evaluates proficiency in grid-based pathfinding and shortest-path reasoning, debugging and incremental code extension, handli...

Coding & Algorithms
6
0
81 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software Engineer

Compute sparse dot product and count islands

You are asked to solve two coding problems. Problem 1: Sparse vector dot product Given two vectors A and B of the same length n (potentially large, e....

Coding & Algorithms
3
0
54 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Design a game leaderboard service

This question evaluates a candidate's ability to design scalable, low-latency ranking services, testing competencies in distributed systems, data mode...

System Design
1
0
26 people solved
Oct 12, 2025
Meta logo
Meta
Medium
Software Engineer

Design keyword search for social posts

Design a Facebook-like post search feature: - Input: one or more keywords. - Output: all (or top-K) posts that contain the keyword(s). - Assume posts ...

System Design
4
0
31 people solved
Oct 2, 2025
Meta logo
Meta
Easy
Software Engineer Locked

Compute Sliding Window Averages

This question evaluates proficiency in array manipulation, sliding-window techniques, and algorithmic efficiency including time and space complexity. ...

Coding & Algorithms
1
0
20 people solved
Jan 29, 2026
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Meta
Easy
Software Engineer Locked

Solve four OA coding problems

This set of four problems evaluates core algorithmic competencies including array manipulation and counting in sorted arrays, resource-constrained opt...

Coding & Algorithms
2
0
50 people solved
Jan 26, 2026
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Meta
Medium
Software EngineerSenior+ Locked

Solve string transform and min-move sorting

This two-part problem evaluates string manipulation and algorithmic problem-solving competencies, specifically rule-based text transformation and comp...

Coding & Algorithms
6
0
99 people solved
Jan 22, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Maximize score in 15-sum card game

This question evaluates algorithmic problem-solving in combinatorial search, state-space optimization, and memoization by asking for the maximum achie...

Coding & Algorithms
9
0
110 people solved
Jan 18, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Compute unmatched parentheses length

This question evaluates string-processing skills and understanding of parentheses matching and cancellation, focusing on linear-time sequence analysis...

Coding & Algorithms
4
0
43 people solved
Jan 18, 2026
Meta logo
Meta
Hard
Software Engineer

Design a bank system with transfers

Single-Process BankSystem: APIs, Data Model, Algorithms, and Edge Cases Context and Assumptions You are asked to design and implement a single-process...

System Design
4
0
66 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Count palindrome substrings in a string

Given a lowercase ASCII string s, count the number of substrings that are palindromes and return the count. Implement an O(n^ 2) solution using expand...

Coding & Algorithms
6
0
69 people solved
Sep 6, 2025
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
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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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