Status
4 years Experience in Financial Tech Company.

Online Assessment

1. https://leetcode.com/problems/kth-largest-element-in-an-array/
2. https://leetcode.com/discuss/interview-question/1025705/Amazon-or-OA-or-Prime-Air-time/824897

Interview 1

LP

1. Tell me about a time when you took on something significant outside your area of responsibility. Why was it important? What was the outcome?
2. A time when you faced a problem that had multiple solutions

Coding

The question was quite vague and open ended. Had to build an alert system in which there was a stream of orderEvents. The orderEvents had different statuses like placed/picking/completed. After the order was placed the should create an alert if time period of P seconds had passed but the order was still not completed. P was inputted into the system. There was some other stuff don't remember too much.

Interview 2

LP

1. What's the most innovative new idea that you have implemented?
2. Tell me about a problem you had to solve that required in-depth thought and analysis. How did you know you were focusing on the right things?

Coding

Exact same as https://leetcode.com/problems/binary-tree-level-order-traversal/

Interview 3 Hiring Manager

LP

1. Tell me about a time when you have worked against tight deadlines and didn't have the time to consider all options before making a decision. How much time did you have? What approach did you take? (Multiple followups)
2. Tell me about a time when you received negative feedback from your manager. How did you respond? (Multiple followups)

Coding

It was a OOD question and was "Design a calculator", similar to the Windows calculator. The user enters character by character. BODMAS rules won't apply and you have to eagerly calculate based on whatever operator was last. Think of other methods you can add like clear and clearall. It was an open ended question and a blank slate was given.

Interview 4

LP

1. What measures have you personally put in place to ensure performance improvement targets and standards are achieved?

Coding

XXXXXXXXXXXXXXXX
X . . . . . . . . . X . . A . .X
X . . . . . . . . . X . . . . . .X
X . . . . . . . . . XXXXXXX
X . . . . A . . . . . N . . . .X
X . . . . . . . A . . . . . . . .X
XXXXXXXXXXXXXXXX

N -> Person
X -> Wall
A -> Amazon Echo Speaker

Count how many speakers the person's voice will reach to. Can go in 4 directions (top, down, left, right). Cannot go though wall. Ans for above example is 2

I gave simple BFS approach. Followup: Why BFS over DFS?

-------------------------------------------------------X-------------------------------------------------------

I thought it went well but finally faced rejection.

Practise LP extensively, you are gonna be grilled especially by the Hiring Manager. Many of the questions are very ambiguous and open ended so you won't find them on leetcode. So I would advise you to go through Amazon questions on careercup.com and other sites. Also ask many questions to clarify. These are all the tips I have and I hope you find this post useful.