The process took 3 months. I interviewed at Meta (Pittsburgh, PA) in Feb 2015
Interview
I had two coding phone interviews but did not move forward to the team matching interview.
For each round, a engineer first introduced himself ask a little bit about your experience. Then they go to coding questions directly. I perform good at first round but not that good at second round.
Interview questions [1]
Question 1
The coding questions are not that hard for both two rounds.
In the first round, the two questions are (1) return the sum of the k-largest digits ([0-9]) in the array (2) implement a LRU cache (least recently used)
In the second round, the two questions are (1) return the index of the largest element, if more than one element reaches max, pick one unifromly at random; (2) clone a graph. the graph is directed, unweighted and not necessarily fully connected.
Recruiter call was pretty standard, first round was 2 Meta tagged LC mediums in 45 minutes. On-site was 2 coding sessions of 2 LC mediums, a system design interview and a behavioral interview with an engineering manager.
Interview questions [1]
Question 1
How do you answer if someone asks how long a deliverable or project will take?
The entire process usually takes 3–8 weeks, depending on scheduling and the specific role. Coding interviews heavily emphasize common DSA topics such as arrays, strings, trees, graphs, BFS/DFS, heaps, hash maps, and dynamic programming. System design becomes increasingly important for E4+ positions.
Interview questions [1]
Question 1
Given an array of integers and a target value, return the indices of two numbers that add up to the target