I applied through a recruiter. The process took 3 days. I interviewed at Meta (Seattle, WA) in Mar 2015
Interview
Was contacted by facebook recruiter. I thought I will give it a try. I selected in person tech screen vs phone interview since I think it is much easier to express yourself in person, plus there is whiteboard. Especially, if it is a graph or tree problem, easier to draw on whiteboard.
I had to sign NDA unfortunately, so won't be able to share the exact question. But for a software engineer (not senior), the question was pretty hard to solve in 40 minutes. Backtracking was required and the best solution to the problem is n! (n factorial). So if you haven't heard of the problem before, it is quite likely you will spend time just on finding an optimal solution before jumping to code. That's what I did. However, I was able to code most of the solution and interviewer seemed happy. He himself told me that.
Interviewer was pretty nice. He answered my questions pretty well and seemed down to earth, only thing I am not sure is the choice of question. I was informed that they will not move ahead with the on-site round, which is what I expected.
Interview questions [1]
Question 1
NDA signed. But the question involved matrix calculations and required backtracking. Best solution was n!
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
Grateful doesn't even begin to describe how I feel about landing this role. The interview loop was smooth and friendly. They kicked things off with a technical round where I faced a DSA question about verifying an alien dictionary. Lucky for me, the time I'd spent on PracHub paid off, as it had the same type of problem just days before. After that, I had a system design discussion and a behavioral interview. Everything felt very collaborative, and by the end, I received an offer that I was thrilled to accept.
Interview questions [1]
Question 1
Given a list of words written in an alien language and the order of letters in that language's alphabet, determine whether the words are sorted lexicographically (Verifying an Alien Dictionary). Walk through the comparison approach using a character-to-index map, the O(C) time complexity where C is total characters, and how you'd extend it to handle words with mixed-case letters or words containing characters outside the given alphabet.