LinkedIn Software Engineer Interview Experience — A Five-Round IC2 Loop With an AI/Coding Round

Elimination Round

• Maximum Depth of Binary Tree
• Zigzag Level Order Traversal

Round 1 – DSA

• Max Points on a Line / Max Collinear Points
• Minimum Length Substring

Round 2 – AI + Coding

• LRU Cache with Counters

1. Given different workloads, predict and calculate the cache's hit/miss ratio.
2. This round required combining coding with reasoning about AI/system behavior.

Round 3 – Hiring Manager

• Behavioral interview questions
• Discussion combining past personal projects and work experience

Round 4 – System Design

• Design Google Calendar

1. Detailed discussion of the system's overall architecture and core components.
2. Discussion of scalability and specific design decisions.

Round 5 – Technical Communication

• Deep dive into a past personal project

1. Detailed discussion of technical decisions and challenges faced.
2. Discussion of trade-offs between different approaches and implementation details.