I applied through an employee referral. I interviewed at Meta in Sep 2015
Interview
I was reached by a Facebook recruiter through referral program. The recruiter was very quick, and I was phone interviewed in next couple of days. The coding question is not difficult, but has to be bug free for all coding questions. I answered two coding questions, and the last question had a followup question. The followup question is a bit difficult, so I messed up with some coding details.
Interview questions [1]
Question 1
For an array of non-negative integer numbers, and a target number, determine whether there's a subarray whose sum equals to target number
Took about a month altogether, which felt longer given the intensity of the process. Kicked off with a technical screening, followed by two rigorous coding interviews. The DSA question on binary tree vertical order traversal hit me hard at first, but then I recognized the prompt instantly — I had just worked through something similar on PracHub. The final round was focused on system design, and while I ended up receiving an offer, I ultimately declined it. Overall, a challenging experience that definitely sharpened my skills.
Overall, the process took a little over two weeks, which felt a bit longer than I anticipated. After a quick screening, I went through two technical rounds focusing on coding and DSA concepts. One of the questions was a classic palindrome check; mid-way through, I realized it was something I had practiced on PracHub just days earlier. The final step was a casual behavioral interview. I was relieved to get an offer shortly after, which I happily accepted.
Interview questions [1]
Question 1
Given a string, determine if it is a valid palindrome considering only alphanumeric characters and ignoring case.
I applied online. I interviewed at Meta (Menlo Park, CA)
Interview
It's honestly striaght from leetcode tagged
There are no surprises if you do tagged you would be good and do well.
System design is much harder. Would recommend using hello interview.
Interview questions [1]
Question 1
Design Twitter and consider if it was suddenly an extremely low latency env