Skip to main content

Meta (Facebook) Software Engineer Interview Questions

Review this list of 86 Meta (Facebook) Software Engineer interview questions and answers verified by hiring managers and candidates.
  • " Project Overview: Real-Time Risk Management System Objective The goal was to develop a real-time risk management system capable of processing and analyzing large volumes of trading data to provide near-instantaneous risk assessments. This system was crucial for enabling traders to make informed decisions while managing their exposure to various market risks in real-time. Complexity Factors 1. \\Data Volume and Velocity\\ \\High Throughput:\\ The system needed to ha"

    Scott S. - " Project Overview: Real-Time Risk Management System Objective The goal was to develop a real-time risk management system capable of processing and analyzing large volumes of trading data to provide near-instantaneous risk assessments. This system was crucial for enabling traders to make informed decisions while managing their exposure to various market risks in real-time. Complexity Factors 1. \\Data Volume and Velocity\\ \\High Throughput:\\ The system needed to ha"See full answer

    Software Engineer
    Behavioral
    +2 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    Video answer for 'Design a streaming service like Netflix.'
    +1

    "using a relational database isn't a good choice for this system! we need more availability here than consistency (CAP theorem)"

    Anonymous Capybara - "using a relational database isn't a good choice for this system! we need more availability here than consistency (CAP theorem)"See full answer

    Software Engineer
    System Design
    +2 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 

    "Functional Requirement Upload the file of any type POST v1/drive Upload the another version of file. POST v1/drive/{fileId} Delete the file. DELETE v1/drive/{fileId} Share the file. POST v1/drive/{fileId} Control the access level of the file. Provide the file accessibility following the directory structure. Non Functional Requirement Reliability: The file along with its versions uploaded should be"

    Vikash A. - "Functional Requirement Upload the file of any type POST v1/drive Upload the another version of file. POST v1/drive/{fileId} Delete the file. DELETE v1/drive/{fileId} Share the file. POST v1/drive/{fileId} Control the access level of the file. Provide the file accessibility following the directory structure. Non Functional Requirement Reliability: The file along with its versions uploaded should be"See full answer

    Software Engineer
    System Design
    +1 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    Software Engineer
    System Design
    +1 more
  • 🧠 Want an expert answer to a question? Saving questions lets us know what content to make next.

  • Meta (Facebook) logoAsked at Meta (Facebook) 
    +46

    "a. Sort the array elements. b. take two pointers at index 0 and index Len-1; c. if the sum at the two pointers is target; break and return the pair d. if the sum is smaller, then move left pointer by 1 e. else move right pointer by 1; run the logic till the target is met or right pointer crosses the left pointer."

    Komal S. - "a. Sort the array elements. b. take two pointers at index 0 and index Len-1; c. if the sum at the two pointers is target; break and return the pair d. if the sum is smaller, then move left pointer by 1 e. else move right pointer by 1; run the logic till the target is met or right pointer crosses the left pointer."See full answer

    Software Engineer
    Data Structures & Algorithms
    +5 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 

    "Evication Strategy: LFU Access Pattern: Write Around"

    Yomna H. - "Evication Strategy: LFU Access Pattern: Write Around"See full answer

    Software Engineer
    System Design
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    +1

    "public class CircularBuffer { private T[] buffer; private int head; private int tail; private int size; private final int capacity; public CircularBuffer(int capacity) { this.capacity = capacity; this.buffer = (T[]) new Object[capacity]; this.head = 0; this.tail = 0; this.size = 0; } public void enqueue(T item) { if (isFull()) { throw new IllegalStateException("Buffer is full"); } buf"

    Vidhyadhar V. - "public class CircularBuffer { private T[] buffer; private int head; private int tail; private int size; private final int capacity; public CircularBuffer(int capacity) { this.capacity = capacity; this.buffer = (T[]) new Object[capacity]; this.head = 0; this.tail = 0; this.size = 0; } public void enqueue(T item) { if (isFull()) { throw new IllegalStateException("Buffer is full"); } buf"See full answer

    Software Engineer
    Data Structures & Algorithms
    +1 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    Software Engineer
    Data Structures & Algorithms
    +1 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    +1

    " import lombok.*; import lombok.extern.slf4j.Slf4j; import org.springframework.boot.CommandLineRunner; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.stereotype.Component; import org.springframework.stereotype.Repository; import org.springframework.stereotype.Service; import java.util.*; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import java."

    Yash G. - " import lombok.*; import lombok.extern.slf4j.Slf4j; import org.springframework.boot.CommandLineRunner; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.stereotype.Component; import org.springframework.stereotype.Repository; import org.springframework.stereotype.Service; import java.util.*; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import java."See full answer

    Software Engineer
    System Design
    +2 more
  • "find total sum. assign that to rightsum traverse from left to right: keep updating left sum and right sum, when they match return the index. else if you reach end return -1 or not found"

    Rahul J. - "find total sum. assign that to rightsum traverse from left to right: keep updating left sum and right sum, when they match return the index. else if you reach end return -1 or not found"See full answer

    Software Engineer
    Data Structures & Algorithms
    +1 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 

    "Yes to peer manager from stackholder team the problem was every time she wanted say something she used to have three way connect with me and my manager"

    Graig - "Yes to peer manager from stackholder team the problem was every time she wanted say something she used to have three way connect with me and my manager"See full answer

    Software Engineer
    Behavioral
    +3 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 

    "Given a Binary Tree, the task is to find its vertical traversal starting from the leftmost level to the rightmost level. If multiple nodes pass through a vertical line, they should be printed as they appear in the level order traversal of the tree. The idea is to traverse the tree using dfs and maintain a hashmap to store nodes at each horizontal distance (HD) from the root. Starting with an HD of 0 at the root, the HD is decremented for left children and incremented for right children. As we"

    Anonymous Mongoose - "Given a Binary Tree, the task is to find its vertical traversal starting from the leftmost level to the rightmost level. If multiple nodes pass through a vertical line, they should be printed as they appear in the level order traversal of the tree. The idea is to traverse the tree using dfs and maintain a hashmap to store nodes at each horizontal distance (HD) from the root. Starting with an HD of 0 at the root, the HD is decremented for left children and incremented for right children. As we"See full answer

    Software Engineer
    Data Structures & Algorithms
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    +1

    "def calc(expr): ans = eval(expr) return ans your code goes debug your code below print(calc("1 + 1")) `"

    Sarvesh G. - "def calc(expr): ans = eval(expr) return ans your code goes debug your code below print(calc("1 + 1")) `"See full answer

    Software Engineer
    Data Structures & Algorithms
    +3 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 

    "Follow STAR Example: In my most recent role at x, we've been working every quarter to set our quarterly goals or even decide for the year but given in 2022 we've been through a great resignation phase there was a high attrition because of which we have overloaded engineering teams. During last quarterly planning, I started to question with my manager about giving a focus to our engineering, so we complete one thing absolutely fine which is more impactful for our customers and add immediate val"

    Ash I. - "Follow STAR Example: In my most recent role at x, we've been working every quarter to set our quarterly goals or even decide for the year but given in 2022 we've been through a great resignation phase there was a high attrition because of which we have overloaded engineering teams. During last quarterly planning, I started to question with my manager about giving a focus to our engineering, so we complete one thing absolutely fine which is more impactful for our customers and add immediate val"See full answer

    Software Engineer
    Behavioral
    +3 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    Software Engineer
    Data Structures & Algorithms
    +1 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    Software Engineer
    Behavioral
    +1 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 

    "Do they ask these kinds of rapid fire questions?"

    Garrett M. - "Do they ask these kinds of rapid fire questions?"See full answer

    Software Engineer
    System Design
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    Video answer for 'Merge k sorted linked lists.'
    +7

    "A much better solution than the one in the article, below: It looks like the ones writing articles here in Javascript do not understand the time/space complexity of javascript methods. shift, splice, sort, etc... In the solution article you have a shift and a sort being done inside a while, that is, the multiplication of Ns. My solution, below, iterates through the list once and then sorts it, separately. It´s O(N+Log(N)) class ListNode { constructor(val = 0, next = null) { th"

    Guilherme F. - "A much better solution than the one in the article, below: It looks like the ones writing articles here in Javascript do not understand the time/space complexity of javascript methods. shift, splice, sort, etc... In the solution article you have a shift and a sort being done inside a while, that is, the multiplication of Ns. My solution, below, iterates through the list once and then sorts it, separately. It´s O(N+Log(N)) class ListNode { constructor(val = 0, next = null) { th"See full answer

    Software Engineer
    Data Structures & Algorithms
    +4 more
  • Meta (Facebook) logoAsked at Meta (Facebook) 
    Video answer for 'Design an API for searching a folder.'
    Software Engineer
    System Design
    +1 more
Showing 41-60 of 86