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.
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