Derived from 1 submission for ALL. Format details may vary across different teams or locations.
The SDE-2 role at Facebook targets engineers with 3-5 years of experience, requiring proficiency in algorithmic problem-solving, system design, and behavioral alignment. The process is rigorous, with a strong emphasis on multi-step reasoning and scalable design principles.
Format: Two coding questions, typically involving data structures and algorithms.
Topics Covered:
Example Questions:
Facebook’s onsite consists of 3-4 technical rounds, each focused on coding or design. Below are the canonical problems observed:
InterviewDigestNULL."The candidate participated in a multi-round interview process at Facebook, including screening, technical, design, and behavioural rounds. The candidate was rejected, potentially due to not solving one of the coding problems in the first onsite round.
Two coding questions were asked. The first involved calculating a moving average. The second required finding the nearest island from a starting point using BFS.
Two coding problems were solved. The first involved populating next right pointers in each node of a binary tree using a queue. The second required finding the union of two lists of non-overlapping, sorted intervals.
Two coding problems were solved. The first involved printing a linked list backward. The second required finding the minimum number of knight moves to reach a target position.
A system design round focused on designing a streaming service for registered users, similar to Netflix.
Two coding problems were solved. The first involved finding the Kth largest element in an array using a heap. The second required cloning a graph using DFS.
A behavioural round focused on project discussions and behavioural questions.