I applied through a recruiter. The process took 2 weeks. I interviewed at Meta in Apr 2015
Interview
Contacted by a technical recruiter, and did a short talk about the potential position I was interested. The technical recruiter is very nice and responsible. Then did a telephone interview by an engineer from Facebook. The engineer asked something like why I chose Facebook, and asked me to solve one problem.
Interview questions [1]
Question 1
For a binary tree, write an iterator class, which can in-order traverse the binary tree, implement two operations, next() and hasnext(). E.g., if in-order traversing a binary tree will return 2 3 4 5 6, then first call next(), it will return 2, call next() again, it will return 3, etc.
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.
1 leetcode med, 1 leetcode hard. make sure you know your DSA and leetcode questions. I wasn't able to get an offer bc i didnt complete the second question. Got a reply 2 days later saying they would move on
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.