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.

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Solve common array/string/linked-list tasks
You may be asked one or more of the following independent coding tasks. For each task, implement an efficient algorithm and clearly state time/space c...
Design a scalable key-value configuration service
Design a Globally Distributed Key–Value Configuration Service Background You are asked to design a globally distributed key–value configuration servic...
Design an online coding judge
Question Design an online coding practice and judging platform (think LeetCode / HackerRank / Codeforces) where users submit solutions that are compil...
Sort a string by custom order
Given a priority string P of distinct characters and a text string S, reorder S so that all characters appearing in P come first and are grouped in th...
Implement a Timestamped Banking System
Implement an in-memory banking system that processes API calls in nondecreasing timestamp order. Support the following operations: - create_account(ti...
Solve sliding window and tree BFS
Question Solve a typical medium-level sliding-window problem (e.g., longest substring without repeating characters). LeetCode 102. Binary Tree Level O...
Navigate unknown maze to find target
You are given an exploration interface for an unknown 2D maze that exposes only local actions (e.g., move(up/down/left/right) -> bool indicating succe...
Find top-K frequent values with tiebreaks
Question Given an integer array nums and an integer k, return the k values with the highest frequency. The array can contain up to 10^6 elements. When...
Count subarrays summing to target
Given an integer array nums and an integer target T, return the number of contiguous subarrays whose sum equals T. Provide an algorithm that runs in l...
Optimize flight costs and find grid path
1) Given two integer arrays D and R of equal length n, where D[i] is the cost to depart on day i and R[j] is the cost to return on day j, choose indic...
Demonstrate communication and teamwork
Behavioral and Communication Interview (Software Engineer Onsite) Context: You are a software engineering candidate. Answer concisely using STAR (Situ...
Convert BST to sorted doubly list
Convert a binary search tree into a sorted doubly linked list in-place. Reuse the existing tree nodes: the left pointer becomes prev and the right poi...
Reverse between equal-value nodes in list
Given the head of a singly linked list and a target value v, locate the first two nodes whose values equal v (call them A and B, with A before B) and ...
Compute left and right views once
Given the root of a binary search tree, output two lists: the nodes visible from the left side and the nodes visible from the right side, from top to ...
Extend a BFS maze solver stepwise
Maze Solver (4 incremental tasks) You are given an existing codebase for a maze solver that finds a path in a 2D grid. The maze is represented as a re...
Explain behavioral experiences and decisions
Behavioral Interview Prompts — Onsite (Software Engineer) Context You are preparing for the onsite behavioral and leadership round for a Software Engi...
Answer conflict, ambiguity, feedback, difficult coworker prompts
Prepare behavioral answers for these prompts: 1) Describe a time you had a conflict with your manager. How did you resolve it? 2) Describe a project w...
Solve tree traversal and two-pointer problems
Implement the following independent problems: 1) Vertical columns: Given a binary tree, return lists of node values grouped by vertical columns from l...
Implement fast power and k-palindrome
The phone screen included two coding tasks: 1. Fast exponentiation Given a floating-point number x and a signed integer n, compute x raised to th...
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...