Meta
Social media and metaverse company behind Facebook, Instagram, and WhatsApp.
4 Rounds
~21 Days
Very Hard
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Software Engineer
•
Coding
•
easy
Given a string s representing a user's text input, return true if the string can be a palindrome after deleting at most one character.
#Two Pointers
#String Manipulation
Software Engineer
•
Coding
•
medium
Given a string of '(' , ')' and lowercase English characters representing a malformed mathematical expression in a Meta internal tool. Remove the minimum number of parentheses so that the resulting string is valid and return it.
#Stacks
#String Manipulation
Software Engineer
•
Coding
•
medium
Given the root of a binary tree representing a hierarchical DOM structure, return the vertical order traversal of its nodes' values (from top to bottom, column by column).
#Breadth-First Search
#Hash Table
#Binary Trees
Software Engineer
•
Coding
•
medium
Given a list of user session intervals [start, end] representing the time a user spent active on the Facebook app, merge all overlapping sessions to return an array of non-overlapping continuous active sessions.
#Sorting
#Arrays
#Intervals
Software Engineer
•
Coding
•
medium
Given two nodes p and q in a binary tree representing an organizational chart, return their lowest common ancestor (LCA). Each node has a reference to its parent node, but you do not have a reference to the root.
#Trees
#Pointers
#Linked Lists
Software Engineer
•
Coding
•
medium
Given an array of integers representing daily ad click counts and a target integer k, return the total number of continuous days (subarrays) whose sum of clicks equals exactly k.
#Prefix Sum
#Hash Table
#Arrays
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.