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
Data Engineer
•
Coding
•
medium
Write a Python function to merge overlapping user session intervals. Given an array of intervals where intervals[i] = [start_i, end_i], merge all overlapping intervals and return an array of the non-overlapping intervals.
#Arrays
#Sorting
#Intervals
Data Engineer
•
Coding
•
medium
Given a list of dictionaries representing Facebook post interactions (user_id, post_id, interaction_type, timestamp), write a Python script to return the top 3 most engaged posts for each interaction type.
#Dictionaries
#Heaps
#Data Aggregation
Data Engineer
•
Coding
•
easy
Given an array of integers representing the number of likes on a user's posts, write a Python function to move all zeros (posts with zero likes) to the end of the array while maintaining the relative order of the non-zero elements. Do this in-place.
#Arrays
#Two Pointers
#In-place Manipulation
Data Engineer
•
Coding
•
medium
Write a Python script to parse a massive JSONL file (100GB+) containing WhatsApp message metadata. Calculate the total number of messages sent per country code. You cannot load the entire file into memory.
#File I/O
#Memory Management
#Generators
#JSON
Difficulty Radar
Based on recent AI-sourced data.
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The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
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Think Out Loud
Always explain your thought process before writing code or drawing architecture.