I recently completed the interview process with LinkedIn and wanted to share my experience.

Round 0: Phone Screen

1. Bulb Switcher
2. Nested List Weight Sum

I was able to solve both problems during the round.

Round 1: Coding Round 1

1. Find the Celebrity
2. A variation of Number of Islands

Solved both questions along with follow-up discussions.

Round 2: Coding Round 2

1. Find Leaves of an N-ary Tree
2. Max Points on a Line

Answered both questions and handled the follow-up questions as well.

Round 3: System Design (Architect)

A variation of Design Top-K YouTube.

I covered:

• Functional and non-functional requirements
• Scale estimation
• Core entities
• High-level architecture
• Deep dive into key components

There were several follow-up questions during the discussion, which I addressed.

Round 4: Technical Communication

This round focused on deep discussions about my past projects with multiple cross-questions.

Round 5: Host Manager / Hiring Manager

Topics discussed:

• Past projects
• Mentoring experience
• Leading projects
• Reasons for considering a switch

Verdict : Rejected