SDE 2 at Acko

How it went

What they would tell you

How to prepare

Their background

Round by round

1. 1

   Coding Round60 min

   I had two problems to solve they were similar to below problems

   • Maximum Employees to Be Invited to a Meeting
   • Apply Substitutions
2. 2

   Low Level Design60 min

   Two interviewer They asked me to design a small social network app, Here is what we talked about

   • User profiles- how to store and manage them
   • Friends and connections- how users add and manage friends
   • Posts and timelines- how to show what your friends are up to
   • Notifications- alert users when someone likes or comments on their posts
   • Privacy- let users control who sees their posts
   • Scaling- what if thousands of people are using the app at the same time? I sketched out basic database tables (users, posts, friendships), API endpoints (add friend, post, like, comment), and talked about caching and sharding for large scale Interviewer asked me lots of followups

What came up