Meta | Infra E4 | US
April 28, 2025 · 43 reads
Summary
My interview experience for an Infra E4 role at Meta included a phone screen with two algorithm questions and an onsite round featuring five technical problems, including both data structures & algorithms and a system design challenge.
Full Experience
Phone screen
- 3Sum Closest
- Continuous Subarrays, variant (maybe?) with length of subarray must be at least 3 and absolute value of the difference between any pair of numbers is in [0, 1].
Onsite
- Diameter of Binary Tree
- Binary Tree Vertical Order Traversal
- Pow(x, n)
- Group Shifted Strings
- Design Ad Click Aggregator
Interview Questions (7)
1.
3Sum Closest
Data Structures & Algorithms
2.
Continuous Subarrays Variant
Data Structures & Algorithms
Continuous Subarrays, variant (maybe?) with length of subarray must be at least 3 and absolute value of the difference between any pair of numbers is in [0, 1].
3.
Diameter of Binary Tree
Data Structures & Algorithms
Diameter of Binary Tree
4.
Binary Tree Vertical Order Traversal
Data Structures & Algorithms
5.
Pow(x, n)
Data Structures & Algorithms
Pow(x, n)
6.
Group Shifted Strings
Data Structures & Algorithms
Group Shifted Strings
7.
Design Ad Click Aggregator
System Design
Design Ad Click Aggregator