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
Hard
Software EngineerSenior+

Build a Mistral-powered RAG agent

Build a Minimal RAG Tool Using the Mistral API Context You have an API token and need to implement a small retrieval-augmented generation (RAG) tool i...

ML System Design
8
0
85 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Traverse binary tree by levels with constraints

Given a binary tree and a predicate P(node), perform a level-by-level traversal that collects, for each level, only the nodes whose values satisfy P. ...

Coding & Algorithms
2
0
37 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Schedule and cancel delayed payments

Question Extend an existing in-memory payment system (immediate transfers between accounts, plus a top-N spenders/payers leaderboard) with scheduled p...

System Design
11
0
103 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software EngineerSenior+

How to answer Staff (L6) behavioral interview questions

Staff / L6 “” org-level impact * * - Scope & Impact/// - StakeholdersEM/PM/Infra/Product/ Staff - Options & Trade-offs 2–3 - Influence without Aut...

Behavioral & Leadership
5
0
66 people solved
Jan 12, 2026
Meta logo
Meta
Medium
Software Engineer

Design a marketplace price tracking service

Design a large-scale product price tracking service similar to an e-commerce price monitor. Users can submit product links from a major online marketp...

System Design
2
0
44 people solved
Mar 4, 2026
Meta logo
Meta
Medium
Software Engineer

Describe failures, self-reflection, and conflict resolution

Answer the following behavioral prompts with recent examples: 1. Self-reflection / improvement - “In a recent project, where could you have done be...

Behavioral & Leadership
16
0
122 people solved
Jan 6, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Design a ranking and recommendation system

This question evaluates a candidate's competency in designing end-to-end ranking and recommendation systems, covering candidate generation, ranking, f...

System Design
9
0
64 people solved
Jan 6, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Return right and left side views of a tree

This question evaluates understanding of binary tree data structures and the competency to identify side views by reasoning about which node is visibl...

Coding & Algorithms
4
0
39 people solved
Jan 5, 2026
Meta logo
Meta
Medium
Software Engineer

Find Any Local Minimum with Iterative Binary Search

Find Any Local Minimum with Iterative Binary Search Given a nonempty integer array numbers, return the index of any local minimum. An index i is a loc...

Coding & Algorithms
0
0
13 people solved
Mar 2, 2026
Meta logo
Meta
Medium
Software Engineer

Return Binary Tree Nodes in Vertical Order

Return Binary Tree Nodes in Vertical Order A binary tree has nodes numbered from 0 through n - 1, with node 0 as the root. Arrays left and right conta...

Coding & Algorithms
0
0
12 people solved
Mar 2, 2026
Meta logo
Meta
Medium
Software Engineer

Merge Three Sorted Arrays Without Duplicates

Merge Three Sorted Arrays Without Duplicates You are given three integer arrays sorted in nondecreasing order. Merge them into one sorted array that c...

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

Describe cross-team collaboration and learning from failure

Answer the following behavioral prompts using specific examples from your experience: 1. Cross-team collaboration: Tell me about a project where you w...

Behavioral & Leadership
2
0
38 people solved
Jan 1, 2026
Meta logo
Meta
Medium
Software Engineer

Design a post privacy/visibility system

Design a privacy system for social media posts (similar to Facebook post privacy). Requirements: - Each post can be: Public, Friends, Friends-of-frien...

System Design
5
0
50 people solved
Feb 25, 2026
Meta logo
Meta
Medium
Software Engineer

Design a large-scale web crawler

Design a web crawler that continuously discovers and downloads web pages. Requirements: - Start from seed URLs and crawl at scale. - Avoid duplicate c...

System Design
3
0
46 people solved
Feb 25, 2026
Meta logo
Meta
Medium
Software Engineer

Design a real-time game leaderboard

Design a real-time leaderboard for an online game. Requirements: - Players submit score updates frequently. - Query top N players globally and per reg...

System Design
10
0
83 people solved
Feb 25, 2026
Meta logo
Meta
Medium
Software Engineer

Design an ad click aggregation service

Design a backend service that ingests ad impression and click events and provides aggregated metrics. Requirements: - Ingest a high-volume stream of e...

System Design
3
0
44 people solved
Feb 25, 2026
Meta logo
Meta
Medium
Software Engineer

Find balanced subarray and increasing tree path

You are given two coding problems. Problem 1: Longest balanced subarray (0/1) Given an integer array nums of length n where each element is either 0 o...

Coding & Algorithms
6
0
64 people solved
Nov 2, 2025
Meta logo
Meta
Easy
Software Engineer Locked

Compute Range Sum Quickly

This question evaluates a candidate's understanding of range-sum queries, array preprocessing techniques and algorithmic complexity for answering mult...

Coding & Algorithms
3
0
49 people solved
Feb 18, 2026
Meta logo
Meta
Medium
Software Engineer

Clone list with random pointers

Question You are given the head of a singly linked list where each node has two pointers: next and random. The random pointer may be null or point to ...

Coding & Algorithms
3
0
47 people solved
Sep 6, 2025
Meta logo
Meta
Hard
Software Engineer

Design a scalable banking system

System Design: Core Banking Platform Problem Design a banking system that supports: - Account creation - Balance inquiry - Deposit and withdrawal - At...

System Design
4
0
47 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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