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

Design a Concurrent, Memory-Bounded Tally Service

Design a Concurrent, Memory-Bounded Tally Service Design and implement the core of a TallyService with two operations: - bump(timestamp): record one e...

Software Engineering Fundamentals
7
0
80 people solved
Jul 1, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Describe Using AI at Work

This question evaluates AI literacy, communication of technical impact, ethical judgment about safeguards, and the ability to quantify business or eng...

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

Design an Instagram-Style Social Feed

A Meta software-engineer onsite system-design question: design an Instagram-style social feed (photo/video sharing with a personalized home feed). It ...

System Design
7
0
86 people solved
May 14, 2026
Meta logo
Meta
Hard
Software EngineerSenior+ Locked

Design Top-K, Crawler, and Chess Systems

This question evaluates system-design competency across scalable distributed services, covering real-time streaming Top-K aggregation, large-scale dis...

System Design
10
0
111 people solved
Jun 2, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Solve Parser, Trading, Tree, And Deck Tasks

You will solve several independent programming tasks. For each task, implement clean, tested code and state the time and space complexity. 1. Validate...

Coding & Algorithms
5
0
37 people solved
Apr 9, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Find Shortest Unique Prefixes

This question evaluates string-processing skills and understanding of data structures for prefix management (e.g., tries), along with algorithmic effi...

Coding & Algorithms
2
0
14 people solved
Jun 18, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Design Search And Web Crawling Systems

This question evaluates system-design and distributed-systems competencies including large-scale indexing and query-serving, relevance ranking and per...

System Design
7
0
69 people solved
May 21, 2026
Meta logo
Meta
Hard
Software Engineer

Design an Online Game Leaderboard

Question Design the backend system for an online game's leaderboard. The system should support: 1. Recording and updating player scores from game sess...

System Design
17
0
149 people solved
Apr 27, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Design an On-Demand Delivery Platform

Design an on-demand local delivery marketplace for restaurants or grocery stores. The platform should support customers browsing merchants, building s...

System Design
4
0
57 people solved
Apr 25, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Explain Collaboration, Ambiguity, and Prioritization

This question evaluates collaboration, ambiguity management, and prioritization competencies, focusing on interpersonal communication, stakeholder ali...

Behavioral & Leadership
3
0
53 people solved
May 14, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Palindrome After Deleting at Most One Character

This question evaluates a candidate's ability to reason about two-pointer string traversal and palindrome verification under a single edit constraint....

Coding & Algorithms
1
0
15 people solved
Jun 20, 2026
Meta logo
Meta
Hard
Software Engineer AI

Design an Automated Ticket Investigation Agent

Design an AI-enabled agentic system that automatically investigates support or engineering tickets. The system should: - Read an incoming ticket and u...

ML System Design
8
0
73 people solved
Apr 27, 2026
Meta logo
Meta
Medium
Software Engineer

Select words to maximize unique characters

Problem You are given an array of strings words. You may choose any subset of these strings and concatenate the chosen strings in any order. Your goal...

Coding & Algorithms
38
0
516 people solved
Dec 15, 2025
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Solve Three Coding Interview Problems

The interview included three coding tasks: 1. Common ancestor in an N-ary tree You are given the root of an N-ary tree and two target nodes. Dete...

Coding & Algorithms
4
0
53 people solved
Feb 2, 2026
Meta logo
Meta
Medium
Software EngineerSenior+

Prepare Leadership And Collaboration Stories

Prepare concise behavioral interview answers for the following prompts. Use specific examples from your own experience, quantify impact where possible...

Behavioral & Leadership
2
0
33 people solved
Apr 9, 2026
Meta logo
Meta
Medium
Software Engineer

Design a distributed job scheduler

Question Design a distributed job scheduler that can run background jobs at specific times or on recurring schedules (similar to cron but scalable and...

System Design
9
0
65 people solved
Dec 8, 2025
Meta logo
Meta
Easy
Software EngineerSenior+

Design a location-based radius top-K search

Design a location-based search service. Input: - latitude, longitude - radius (meters) - K Output: - The top K locations within the radius. The term “...

System Design
34
0
294 people solved
Mar 11, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Design an Online Judge and Live Comments

The onsite included two system design prompts: 1. Design an online judge platform where users submit code for programming problems. The system must su...

System Design
24
0
172 people solved
Apr 8, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Validate Sorted Order Under a Custom Alphabet

This question evaluates a candidate's ability to apply custom ordering rules and string comparison logic, a common variant of array and string validat...

Coding & Algorithms
2
0
18 people solved
Jun 20, 2026
Meta logo
Meta
Medium
Software Engineer

Design an Expected O(1) Randomized Container

Design an Expected O(1) Randomized Container Design a generic container that stores distinct elements and supports: - insert(element) -> bool: add an ...

Software Engineering Fundamentals
0
0
16 people solved
Mar 2, 2026
Editorial prep
Meta Software Engineer Interview Prep
Concept walkthroughs, worked examples, and the real questions.

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.

Explore more Meta Software Engineer interview questions

Real questions from candidate reports, grouped by topic, role and company.

By category
Other roles at Meta
Software Engineer questions at other companies
Browse all