Facebook

www.facebook.com

Facebook Software Engineer Interview Questions

Updated 29 Jan, 2015
Updated 29 Jan, 2015
429 Interview Reviews

Interview Experience

Interview Experience

61%
23%
15%

Getting an Interview

Getting an Interview

24%
21%
15%

Interview Difficulty

3.3
Average

Interview Difficulty

Hard

Average

Easy

429 Candidate Interview Reviews Back to all interviews

Sort: Popular Date Difficulty

1 person found this helpful  

Software Engineer Interview

Anonymous Interview Candidate
Anonymous Interview Candidate
Interview Details

Online Application, submitted the resume only. Contacted next day for a phone interview.
After the first interview was schedule for a second phone interview. Finally went for the onsite interview in Menlo Park where there was 3 interview in the same day.

Interview Questions
  • Print a binary tree level per level.
        1
     2 3
    4 5 6 7

    Would print
    1
    23
    4567
     
    View Answers (2)
No Offer

Other Interview Reviews for Facebook

  1. 6 people found this helpful  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied through an employee referral – interviewed at Facebook.

    Interview Details

    Started with a quick phone call from a recruiter at facebook. He was very nice and polite but not technical. Questions were related to past experience but I felt as though it was more just a quick fit check before moving to a more technical interview.

    Next step was a call with a Senior Engineer. The phone call was about one hour in which the you will be quized about elementary data structures and algs.

    Interview Questions
    • Create an iterator to traverse a binary tree. When the next function is called on the binary tree return the value at the next node as if you are doing an inorder traversal of the tree. Restrictions: Nodes do not have pointers to their parent node and you can't use recursion.   View Answer
    No Offer
  2.  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied through a recruiter. The process took 3 weeksinterviewed at Facebook in March 2014.

    Interview Details

    Phone call interview with engineer. Interviewer was very nice, talked about my previous work and his previous work. Then got into coding questions.

    Interview Questions
    • Given a list of k sublists containing n sorted integers, generate output as one sorted list.
      Comment on complexities.
       
      View Answers (4)
    No Offer
    Positive Experience
    Difficult Interview
  3.  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied through an employee referral. The process took 2 weeksinterviewed at Facebook in December 2013.

    Interview Details

    employee referral, contacted by HR, phone interview, normal interview question, no reply for 2 weeks, contacted HR. employee referral, contacted by HR, phone interview, normal interview question, no reply for 2 weeks, contacted HR.

    Interview Questions
    No Offer
    Average Interview
  4. Is this helpful? The community relies on everyone sharing – Add Anonymous Interview Review


  5. 1 person found this helpful  

    Software Engineer Interview

    Anonymous Interview Candidate in Vancouver, BC
    Anonymous Interview Candidate in Vancouver, BC
    Application Details

    I applied through college or university. The process took 5 daysinterviewed at Facebook in March 2012.

    Interview Details

    Get contacted by HR after drop resume in a campus event.
    Attended the on campus interview.

    The process is very fast paced. And the interviewer is very friendly.

    He provided hints and gave follow-up discussion about your solution.

    Interview Questions
    No Offer
    Positive Experience
    Average Interview
  6. 72 people found this helpful  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Interview Details

    phone interview starting with introducing yourself followed by two code questions.
    The first coding question is very standard coding question and the second one is
    a little more related to facebook's certain functionality

    Accepted Offer
  7. 20 people found this helpful  

    Software Engineer Interview

    Anonymous Interview Candidate in Menlo Park, CA (US)
    Anonymous Interview Candidate in Menlo Park, CA (US)
    Application Details

    I applied through college or university – interviewed at Facebook.

    Interview Details

    Process:
    This is for undergrad full-time software candidates in USA. Submitted resume at college career fair. Got email about on-campus interviews. At this stage, there are 3 possible outcomes: onsite invitation, a phone interview for an additional chance, or reject. I was invited to onsite interview.

    Onsite was a "University Day" that included three interviews (not four like they said in the email) before lunch and then a tour, new-hire panel, etc after lunch.

    All interviews were 45-mins length.

    Interviews themselves:
    On-campus interview: 3 coding questions. I don't remember signing any NDA at this point so, the questions were k-Nearest Points to Origin, finding a substring, and 3-sum.

    On-site interview: 3 interviews, 45 mins each. 1st interview: 2 coding questions. 2nd interview: behavioral questions (about team conflict, etc.) and a coding question. 3rd interview: 2 coding questions. Coding questions were easy and required *no knowledge* of special algorithms or data structures (such as graphs, DP, trees, etc). Recursion and strings were common.

    I did not get an offer from Facebook; however, I received offers from other companies. The interview questions themselves were considerably easier at Facebook than those asked at Google, LinkedIn, MS, Amazon, etc.

    Since the questions are not very hard, my guess is the decision is based upon fit and most importantly how *quickly* you were able to arrive at your solution and how *perfect* your code was. Make sure you focus and are confident.

    Advice: practice the easier questions and practice coding them. Also, looking at some of the other experiences on Glassdoor, it looks like a majority of the questions are re-used.

    Interview Questions
    No Offer
    Positive Experience
    Easy Interview
  8.  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    The process took 2 weeksinterviewed at Facebook.

    Interview Details

    I applied through an internal referral. The process took about one week. A recruiter contacted me via email. At the interview, an engineer called me via phone. He was in bad mood. He asked me Why Facebook and was not satisfied with my answer at all. He interrupted me a lot during the whole interview.

    Interview Questions
    No Offer
    Negative Experience
    Average Interview
  9.  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied through college or university. The process took 3 weeksinterviewed at Facebook.

    Interview Details

    Applied through university career fair. Received a call within a week, and scheduled an interview a week later. Was asked a question on graphs. The interview experience was pleasant. The interviewer gave me time to think. The interview went on for 45 minutes. The process was smooth. Received a reject email a week later.

    Interview Questions
    No Offer
    Positive Experience
    Average Interview
  10.  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Interview Details

    Overall interview process was fantastic! Loved it though I did not get the offer.

    Sourcing Recruiter contacted me on Linkedin when I was not looking. After 6 month or so I contacted same recruiter. I got prompt response from this point till the end.

    I went through 1st technical round of interview onsite as I was local to their HQ. They prefer onsite though one can choose phone interview. For me onsite worked out well.Nearly 1-hour interview with one person. Two programming questions one on link list and other on BST. For each involved finding the solution (easy to optimal) and then write code optimal solution. I did this pretty well as I had prepared for data structures and algos.

    They immediately called me for full day onsite interview. Again I prepared lot on data structures, algorithms and related problem solving. And boom..that was my mistake. I forgot to focus on system side (locking, synchronization, deadlock) in detail. 5 interviewers, 45 min each. No on asked on data structures/algo. Two interviewers asked on locking related question, 1 design, 1 manager and last guy did combo of everything. Mostly I screwed up on locking related questions as I took many hint and long time... sigh..

    Everyone was professional. Communication was prompt and fast!

    Interview Questions
    • Design backend system to run app like facebook where query is to get two levels of friends of friend. Open ended question..   Answer Question
    No Offer
    Positive Experience
    Difficult Interview

Work at Facebook? Share Your Experiences

Facebook

 
Click to Rate
or

The difficulty rating is the average interview difficulty rating across all interview candidates.

The interview experience is the percentage of all interview candidates who said that their interview experience was positive, neutral or negative.

Your response will be removed from the review – this cannot be undone.