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Facebook Software Engineer Interview Questions

Updated Nov 27, 2014
Updated Nov 27, 2014
84 Interview Reviews

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58 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

Other Interview Reviews for Facebook

  1.  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Interview Details

    phone interview. ask one project, and why want to work in facebook. Then ask two coding question. The first one is implement strstr(), and follow up is how to speed it up. The second question is 3 sum, and the element can be duplicated. Follow up is how to speed it up.

    Interview Questions
    • the interviewer ask me how to optimize the strstr() brute force method, and I said we can use KMP algorithm to do it, then he move on, and don't ask me to implement it.   Answer Question
    Accepted Offer
  2. 2 people found this helpful  

    Software Engineer Interview

    Anonymous Interview Candidate in Menlo Park, CA
    Anonymous Interview Candidate in Menlo Park, CA
    Application Details

    I applied online. The process took 3 weeksinterviewed at Facebook in November 2014.

    Interview Details

    The whole process was very fast.

    I have applied through the web site and got reply on a same day.

    1. Screening with recruiter (15-20 mins)
    2. Phone interview with an engineer (45 mins)
    3. Onsite interview with 4 people (2 coding, 1 system design, 1 culture fit + coding)

    Interview Questions
    • I found system design question more difficult than others as I had no experience in designing large scalable systems.   View Answers (2)
    Accepted Offer
    Positive Experience
    Difficult Interview
  3.  

    Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Interview Details

    First I got a phone interview, where I was asked a few background questions like previous experience. After this, I received an email for an on-site interview. After a brief tour of the campus in Palo Alto, I was brought to a room where a Senior Software Engineer interviewed me. I was asked a number of simple questions, and then one complex coding question.

    Interview Questions
    Declined Offer
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  5.  

    Software Engineering Interview

    Anonymous Interview Candidate in Seattle, WA
    Anonymous Interview Candidate in Seattle, WA
    Application Details

    I applied through college or university. The process took 4+ weeksinterviewed at Facebook in October 2014.

    Interview Details

    Got an on-campus interview through the career fair at my university. The on-campus interview was a total of forty-five minutes: first five to ten minutes was talking about the interviewer and about my past experiences and the rest of the time was for one technical question, which was relatively easy. Two days after the on-campus interview, I was invited to an on-site interview at their Seattle office during one of their University Days. The interview style was the same as the on-campus interview. They also took us on a tour around Seattle during the on-site.

    Interview Questions
    Accepted Offer
    Positive Experience
    Difficult Interview
  6.  

    Software Engineer Interview

    Anonymous Interview Candidate in Ann Arbor, MI
    Anonymous Interview Candidate in Ann Arbor, MI
    Application Details

    I applied in-person. The process took 2 weeksinterviewed at Facebook in September 2014.

    Interview Details

    Met at career fair and talked with a recruiter. Received an email to do an onsite interview. Within a couple days of the interview I was asked to attend a Campus day (on site) and was given a couple of possible dates. FB arranged flights and hotels (really really nice hotels) for the visit. Offers were extended within a week of the interview

    Interview Questions
    • Find lowest common ancestors of a tree given nodes.   View Answer
    Accepted Offer
    Positive Experience
    Average Interview
  7. 16 people found this helpful  

    Software Engineer Interview

    Anonymous Interview Candidate in Menlo Park, CA
    Anonymous Interview Candidate in Menlo Park, CA
    Application Details

    I applied through a recruiter. The process took 4+ weeksinterviewed at Facebook in July 2014.

    Interview Details

    I was hiring specifically for an iOS position. The recruiters start with Obj-C 5 multiple choice questions, which required some surprising depth. I won't get into specifics, but take time to understand memory management (even with arc), blocks, addresses and pointers.

    After was a phone interview which mostly involved a collaborative coding question. The questions asked here were very typical algorithmic questions, the answers usually involved a hash to cache meta values to increase performance.

    Protip: Be familiar with NSSet and NSOrderedSet. These data structures are more performant than NSArrays for some operations, and I found myself using them in almost every answer.

    Then you have an onsite visit, with 4 additional interviews: 2 coding, 1 design, and 1 "culture fit" which, for me, was really another coding interview.

    Your recruiter will contact during the next week or two afterwards to give you updates on your status. I believe there are three different meetings where your interviewing notes are reviewed and given consideration.

    Interview Questions
    • What is something other people misunderstand about you?   View Answer
    Negotiation Details
    I went back and forth once between a competing company and received higher offers each time. Ask your recruiter for honest assessments of your interviews - if you did well FB will be much more willing to "one up" the competition.
    Accepted Offer
    Positive Experience
    Average Interview
  8. 2 people found this helpful  

    Software Engineer Interview

    Anonymous Interview Candidate in Menlo Park, CA
    Anonymous Interview Candidate in Menlo Park, CA
    Application Details

    I applied through an employee referral. The process took 2 weeksinterviewed at Facebook in July 2014.

    Interview Details

    Introduced into the whole process via a referral, so I was able to move quickly to an onsite interview. This was easily the best interview experience I've had in a long time - recruiter was friendly and extremely responsive, and each of the interviews was engaged during the interview.

    Everything moved very quickly once I indicated that I felt prepared to interview.

    Interview Questions
    • Nothing terribly surprising - be prepared to talk through CS fundamentals, large scale design, and code code code.   Answer Question
    Accepted Offer
    Positive Experience
    Difficult Interview
  9. 4 people found this helpful  

    Software Engineer Interview

    Anonymous Interview Candidate in Seattle, WA
    Anonymous Interview Candidate in Seattle, WA
    Application Details

    I applied through college or university. The process took 2+ weeksinterviewed at Facebook in April 2014.

    Interview Details

    Two interviews - one on my university campus, one on the nearest Facebook campus. Got back promptly after the second interview. The culture is amazingly open, any intern can look at any piece of code in the company - nothing is secret. Additionally a lot of trust is put in interns and employees.

    Interview Questions
    • Standard rotated binary search question. You have a sorted array that has been shifted/cycled, perform a search on it   View Answers (2)
    Negotiation Details
    No negotiation, there seemed to be a formula for salary for interns.
    Accepted Offer
    Positive Experience
    Average Interview
  10.  

    Software Engineer Interview

    Anonymous Interview Candidate in Menlo Park, CA
    Anonymous Interview Candidate in Menlo Park, CA
    Application Details

    I applied through an employee referral. The process took 6 weeksinterviewed at Facebook in February 2014.

    Interview Details

    The whole process took around 6 weeks. I did my first phone screen in beginning of January and had my onsite in February. Involved algorithm and design problems. Not too hard.

    Negotiation Details
    It was a very good offer so din't have to negotiate
    Accepted Offer
    Positive Experience
    Difficult Interview

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