HashedIn Interview Experience for Software Engineer-II 2021

I was contacted by a HashedIn recruiter. The process took about a week. 

Round 1 (Coding):  This was a technical coding round of 1 hour with a Software Engineer II which also included a few questions on Core Java fundamentals.

• Tell me about yourself.
• Explain a project.
• (LC Easy): https://leetcode.com/problems/maximum-number-of-balls-in-a-box/. I was asked to provide the space and time complexity as well.

Core Java Questions:

• What is immutability?
• Is try with multiple catch allowed? Explain.
• What is garbage collection?
• Tell me a little about HashMaps.

Round 2 (System Design): This round was of 1.5 hours with a Senior Software Engineer. 

• I was asked to design a Food Delivery App (Swiggy). 
• This round revolved around designing database schemas, identifying relationships between entities and establishing primary key-foreign key constraints. 
• A few complex SQL queries were also asked with respect to the above design including questions on ACID properties and Hibernate annotations. 

Round 3 (Managerial): This was a half an hour round with a Senior Manager. I was asked the following questions:

• Tell me about yourself.
• Have you ever worked on multiple tasks simultaneously?
• Have you ever communicated with clients directly?

Verdict: SELECTED