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
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Meta
Medium
Software Engineer

Find buildings with rightward view

Find buildings with rightward view You are given an array of building heights aligned along a street that faces the ocean to the right. Return the ind...

Coding & Algorithms
3
0
25 people solved
Aug 7, 2025
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Meta
Medium
Software Engineer

Decide palindrome within k deletions

Decide palindrome within k deletions Given a string s and integer k, decide whether s can be transformed into a palindrome by deleting at most k chara...

Coding & Algorithms
1
0
22 people solved
Aug 7, 2025
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Meta
Medium
Software Engineer

Solve grid shortest path and robot cleaning

Question LeetCode 1091. Shortest Path in Binary Matrix; LeetCode 489. Robot Room Cleaner https://leetcode.com/problems/shortest-path-in-binary-matrix/...

Coding & Algorithms
3
0
39 people solved
Aug 4, 2025
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Meta
Medium
Software Engineer

Find Lowest Common Ancestor with Parents

Question LeetCode 1650. Lowest Common Ancestor of a Binary Tree III Compute the time and space complexity of your solution https://leetcode.com/proble...

Coding & Algorithms
1
0
11 people solved
Aug 4, 2025
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Meta
Medium
Software Engineer

Count uniques in sparse sorted array

Question A sorted array contains many duplicates but only a very small number of distinct values. Design an algorithm that counts how many unique numb...

Coding & Algorithms
29
0
10 people solved
Aug 4, 2025
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Meta
Medium
Software Engineer

Maximize vacation streak with PTO

Question Given an array of characters containing 'w' (workday) and 'h' (holiday) and an integer n representing the number of PTO days you can convert ...

Coding & Algorithms
12
0
10 people solved
Aug 4, 2025
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Meta
Medium
Software Engineer

Solve LeetCode array & stream problems

Question LeetCode 346. Moving Average from Data Stream LeetCode 249. Group Shifted Strings LeetCode 163. Missing Ranges Remove duplicates from a chara...

Coding & Algorithms
19
0
60 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Solve classic LeetCode problems

Question LeetCode 215. Kth Largest Element in an Array LeetCode 249. Group Shifted Strings Variant of LeetCode 56. Merge Intervals extended to 2-D rec...

Coding & Algorithms
7
0
34 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Solve diameter and shortest bridge problems

Question LeetCode 543. Diameter of Binary Tree LeetCode 934. Shortest Bridge https://leetcode.com/problems/diameter-of-binary-tree/description/ https:...

Coding & Algorithms
19
0
58 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Solve 4 LeetCode algorithm problems

Question LeetCode 636. Exclusive Time of Functions LeetCode 253. Meeting Rooms II LeetCode 314. Binary Tree Vertical Order Traversal LeetCode 215. Kth...

Coding & Algorithms
1
0
7 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Check tree nodes equal subtree average

Question LeetCode 2265. Count Nodes Equal to Average of Subtree – Adapted: Verify that every node’s value equals the average of all values in its subt...

Coding & Algorithms
12
0
29 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Compare two string linked lists

Question Given two singly linked lists where each node stores one character as a string, determine whether the sequences of characters represented by ...

Coding & Algorithms
7
0
20 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Solve various LeetCode data-structure questions

Question LeetCode 129. Sum Root to Leaf Numbers LeetCode 2089. Find Target Indices After Sorting Array LeetCode 270. Closest Binary Search Tree Value ...

Coding & Algorithms
16
0
46 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Design prefix-sum function and max stack

Question LeetCode 303. Range Sum Query – Immutable (design a reusable prefix-sum function) LeetCode 716. Max Stack (similar design question) https://l...

Coding & Algorithms
4
0
15 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Find closest BST value and remove parentheses

Question LeetCode 270. Closest Binary Search Tree Value LeetCode 1249. Minimum Remove to Make Valid Parentheses (follow-up: achieve without using a st...

Coding & Algorithms
13
0
55 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Solve tree leaf sum and target indices search

Question LeetCode 129. Sum Root to Leaf Numbers LeetCode 2089. Find Target Indices After Sorting Array (array already sorted; require O(log n) time) h...

Coding & Algorithms
7
0
34 people solved
Jul 29, 2025
Meta logo
Meta
Medium
Software Engineer

Check Palindrome and Add Decimal Strings

Question LeetCode 266. Palindrome Permutation – Given a string, determine whether any permutation can form a palindrome. Follow-up: If a palindrome pe...

Coding & Algorithms
24
0
66 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Handle palindrome & decimal addition

Question LeetCode 266. Palindrome Permutation Given two non-negative decimal number strings, implement addition that supports a decimal point. https:/...

Coding & Algorithms
11
0
35 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Solve vertical order & diameter variants

Question LeetCode 314. Binary Tree Vertical Order Traversal LeetCode 543. Diameter of Binary Tree – modified to return the number of nodes (edges + 1)...

Coding & Algorithms
1
0
4 people solved
Jul 29, 2025
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Meta
Medium
Software Engineer

Design weighted random index picker

Design and implement a data structure that, given an array of positive integer weights w[0..n−1], supports pick() that returns index i with probabilit...

Coding & Algorithms
5
0
46 people solved
Jul 29, 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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