There were 3 rounds:

Round 1:

• Online Assessment on HackerEarth
• 3 coding questions purely based on DSA
• Problems asked were based on
  • Arrays & Maths
  • Dynamic Programming
  • Segment Trees

Result: Shortlisted for the next round.

Round 2:

• Technical Round
• Purely based on DSA
• Problems asked in Round 1 were based on:
  • Binary Search
  • Largest Sum Subarray (Kadane’s Algorithm)
  • Merge two Binary Trees with node sum

Result: Shortlisted for the next round.

Round 3:

• Hiring Manager Round
• Based on System Design and Computer Science and Fundamentals
• Problems asked in Round 2:
  • Questions on my past Internship work and projects.
  • What are ACID properties?
  • Mutex and Semaphores
  • Process & Threads
  • An in-depth discussion on URL Shortner.
  • Indexes in Databases
  • Hashing Mechanisms
  • Some more conceptual questions on OS & DBMS

Result: Rolled out an offer.