Facebook Interview Questions & Reviews
Getting an Interview
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Software Engineer Interview (Neutral Experience; Average Interview)
I applied through an employee referral and the process took 2 weeks - interviewed 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 Question – normal careercup question Answer Question
Software Engineer Interview (Neutral Experience)
I applied through an employee referral and 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 Question – 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. Answer Question
Quantitative Engineering Interview (Neutral Experience; Average Interview)
I applied through a recruiter and the process took 3 days - interviewed at Facebook in February 2014.
Interview Details I applied through campus recruiter. The recruiter was very nice and arranged the phone interview very soon.
The phone interview was 45 minutes. First, The interviewer very briefly asked my background (about 2 minutes?), then moved to the coding test. The coding question was not hard. I gave a simple solution first, but the interviewer asked if I can improve it. Then I gave a better solution. Sounds like the interviewer was satisfied with the second one. the last 5 minutes, the interviewer asked me if I have any questions. I said no.
Interview Question – The question was pretty straightforward. Given a random number generator, and an array consists of M numbers, generate a number from 1 to N, but not in that array. View Answer
Software Engineer Interview (Positive Experience; Difficult Interview)
I applied through a recruiter and the process took 3 weeks - interviewed 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 Question – Given a list of k sublists containing n sorted integers, generate output as one sorted list.
Comment on complexities. View Answers (3)
Front End Engineer Interview (Positive Experience; Average Interview)
I applied through college or university and the process took 1 week - interviewed at Facebook in February 2014.
Interview Details Applied for new grad front end engineer position through University of Waterloo's job posting system. Was contacted by recruiter via e-mail on a Friday, interview schedule for Wednesday of following week. Meet and greet, informal reception occurred on Tuesday evening before interview. Very friendly interviewer and employees at reception. 45 minute interview consisted of questions regarding work experience and projects, followed by 2 technical questions.
ex. [1, [2, [ [3, 4], 5], 6]] => [1, 2, 3, 4, 5, 6]
2. Using HTML and CSS, show how you would create an image that would display another image (aligned to the bottom, right) when the user hovers over the image.
ex. The Facebook "edit profile picture" icon View Answers (3)
Production Engineer Interview (Negative Experience; Average Interview)
I applied online and the process took 2 months - interviewed at Facebook.
Interview Details I applied online for a production engineering position. A recruiter did a screening interview with me to assess where my strengths lay, and to determine which role would be the best fit. They recommended a production engineering role. We scheduled a phone interview which covered several programming/scripting questions. After getting positive feedback, we scheduled another phone interview which covered linux system administration and troubleshooting. Although I received positive feedback from that interview as well, the existing production engineering roles were filled. My recruiter asked if I would be interested in pursuing another role within the organization, specifically a software engineering role. We scheduled an interview with that team. I had a bad day, and couldn't focus during the interview, totally blowing it. I didn't receive an offer, although if given another chance I believe I would be offered one.
Very Difficult Interview
Intern Interview (Neutral Experience; Very Difficult Interview)
I applied online and the process took 4 days - interviewed at Facebook in September 2013.
Interview Details I applied online and my school had their own internship application program but they decided not to use that. Instead, the HR called me and asked me some typical HR questions, which I was able to answer, and then she scheduled me with a manager for further evaluation. She also told me there would be 2 rounds of tech interviews which I thought was weird of an internship..
Interview Question – So dev manager was asking about algorithms and I was able to answer most of them. But then he asked something about NP completeness which I had no clue what it was about. Answer Question
Analyst, Partner Measurement Interview (Negative Experience; Difficult Interview)
I applied online and the process took 1 week - interviewed at Facebook in July 2012.
Interview Details Recruiter reached out for an initial phone call with some behavioral and logic questions. She later followed up with an e-mail of several articles to prepare for an interview with the hiring manager.
The hiring manager for the position was unavailable at the last minute so they had someone else on the team conduct the interview. The person that I spoke to was extremely rude and condescending, suggesting that my work at my current employer was not good enough for them, even though I had more work experience than her. After speaking to her, I no longer had any interest in working for Facebook and would not consider applying again.
Interview Question – If a Facebook user doesn't provide their age, what data would you use to determine their age [for the purpose of ad targeting]? View Answer
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