Status: Experience 12+, Masters CS
Position: SDE3 at Amazon
Location: Seattle, WA
Date: Sep 2019

Onsite (direct)

4 Rounds with ~50 mins each

Round 1) LP Question for 20 mins
1.a) Find the prefix from the list of Strings

Round 2) LP Question for 20 mins
2.a) Question similar to https://www.geeksforgeeks.org/merging-intervals/

Round 3) LP Question for 20 mins
3.a) Design a scalable system for persisting contact list from mobile clients(s), every account with a unique account identifier
- Design Storage solution (SQL or NoSQL)
- Design APIs to look up a account identifier, ie get the phone numbers giving an accountId and and reverse look up with phone number and get the accountIds
- Scale the system

Round 4) LP Question for 20 mins
4.a) Implemet find command as in Unix accepting variable arguments any laguage.
Ex: ./find "/root" -name:".tgz" OR -name:".gz" AND -size:"+10MB" OR -size:"-10MB" etc. (There can be many filters based on any file atttributes.)

LP Questions were very straight forward. Please plan for the standard questions any one can ask. Try to answer in S.T.A.R approach.

• Examples a) Tell me a time when you delivered more than expected.

I literally enjoyed talking to Amazonians. They were extremely friendly and helped during the time.
The rejection boosted my confidence. Now I know where to hit the ball and how to plan the game ahead.