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

Find Kth Largest and Tree Ancestors

In a technical phone interview, the candidate was asked two coding problems in the same round: 1. K-th largest element in an array Given an unsor...

Coding & Algorithms
3
0
56 people solved
Feb 22, 2026
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Meta
Medium
Software Engineer Locked

Determine feasibility and clean parentheses string

This pair of problems evaluates proficiency with graph algorithms (dependency modeling and cycle detection/topological ordering) and string processing...

Coding & Algorithms
29
0
195 people solved
Feb 12, 2026
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Meta
Medium
Software EngineerSenior+ AI

Solve Matrix, Tree, Nested, LCA, Maze Tasks

Answer the following independent coding tasks. For each task, implement a clean API, handle edge cases, and analyze time and space complexity. 1. Trav...

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

Extend cloud file system with copy and compression

In-Memory Cloud File System V2: Copy, Capacity Updates, Compress/Decompress Design an in-memory file system with per-user quotas and additional operat...

Coding & Algorithms
9
0
71 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software Engineer

Design a bank system with scheduled transfers

Bank System (OOD): Accounts, Transfers, Scheduling, Top Spending, Merge Design an in-memory banking system that supports: - account creation - deposit...

Coding & Algorithms
2
0
41 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software Engineer

Design an in-memory cloud file system

In-Memory Cloud File System (OOD) Design an in-memory cloud file system that supports files owned by users with storage quotas. Data model / rules - E...

Coding & Algorithms
5
0
43 people solved
Feb 11, 2026
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Meta
Medium
Software Engineer Locked

Solve three array/string/graph coding tasks

This set of three coding tasks evaluates proficiency in fundamental data structures and algorithms, covering multi-way array merging, custom character...

Coding & Algorithms
4
0
59 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Solve maze reachability and two follow-ups

This set of tasks evaluates graph and state-space search with constrained movement (maze rolling ball), tree algorithms and recursion for computing di...

Coding & Algorithms
12
0
96 people solved
Feb 7, 2026
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Meta
Medium
Software Engineer

Solve tree view and parentheses cleanup

Solve the following two algorithm problems. 1. Right-side view of a binary tree Given the root of a binary tree, return the values of the nodes that w...

Coding & Algorithms
6
0
43 people solved
Feb 1, 2026
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Meta
Medium
Software Engineer Locked

Compute dot product of sparse vectors

This question evaluates proficiency with sparse data representations and algorithmic efficiency by requiring the dot product to be computed from lists...

Coding & Algorithms
3
0
33 people solved
Jan 18, 2026
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Meta
Medium
Software Engineer Locked

Implement cd and merge intervals

This question evaluates proficiency in filesystem path normalization (string parsing, tokenization, and edge-case handling) and interval-merging algor...

Coding & Algorithms
3
0
57 people solved
Jan 16, 2026
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Meta
Hard
Software Engineer Locked

Count three-digit numbers with distinct digits

This question evaluates a candidate's understanding of digit manipulation, basic combinatorics, and implementation of value-range constraints in codin...

Coding & Algorithms
2
0
42 people solved
Jan 6, 2026
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Meta
Medium
Software Engineer Locked

Solve counting and frequency coding tasks

This question evaluates algorithmic skills in counting, frequency analysis, constraint-based pair counting, and stream-oriented tokenization and ranki...

Coding & Algorithms
3
0
43 people solved
Jan 5, 2026
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Meta
Medium
Software Engineer Locked

Implement power, reduce string, parse tree, debug maze

This multi-part question evaluates numerical algorithms (fast exponentiation), string-processing and reduction logic, recursive parsing and tree const...

Coding & Algorithms
3
0
49 people solved
Jan 1, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Maximize Letters from Disjoint Words

This question evaluates understanding of combinatorial selection, set-based constraints, and efficient representation and enumeration of candidate sub...

Coding & Algorithms
2
0
23 people solved
Dec 30, 2025
Meta logo
Meta
Medium
Software Engineer

Answer four string/array/battery coding questions

You are given four independent coding questions. Problem A — Uppercase vs lowercase count difference Given a string s (ASCII), count how many characte...

Coding & Algorithms
4
0
46 people solved
Dec 16, 2025
Meta logo
Meta
Medium
Software Engineer

Validate near-palindrome and course prerequisite feasibility

Coding round (40 minutes): two problems You do not need to run code, but you should: - Explain your approach clearly. - Walk through the logic on exam...

Coding & Algorithms
2
0
30 people solved
Dec 15, 2025
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Meta
Medium
Software Engineer

Convert 32-bit integer to hexadecimal

Problem Given a 32-bit signed integer num, return its hexadecimal representation as a string. Requirements - Use lowercase letters a-f. - Do not inclu...

Coding & Algorithms
1
0
25 people solved
Dec 15, 2025
Meta logo
Meta
Medium
Software Engineer

Return all root-to-leaf path sums

Problem You are given the root of a binary tree where each node contains an integer value (may be negative). Return an array/list containing the sum o...

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

Explain ACID and isolation levels

Explain what a database transaction is, define the ACID properties (Atomicity, Consistency, Isolation, Durability), and describe common transaction is...

Software Engineering Fundamentals
7
0
69 people solved
Dec 8, 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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