Status: 5 YOE, BE IT from tier3 College
Position: SE 3 at PayPal
Location: Banglore
Date: 17/May/2021

Round 1: HackerRank test with two medium level question(LC) sorry I dont remeber the question exactly.

Round 2: Technical Round one in this round Interviewer asked me 3 Questions
1) Find a number in an array and different ways to find a number (Not sure what was the expectation from this question but i discussesd about binary and linear search and another appraoch is to used Set datastructure to find an element.
2) Find the longest repeating substring in a string eg: "abcdijkijkastabcduast" here ans is abcd as it is the long repeating substring in string. If any one have a better optimum solution for this problem please post it in comment.

Round 3: Technical Round Second this was onsite round taken by someone for US. This round has three coding question
1) Find the kth largest element in array. You can find this question in LC.
2) Find the intercetion of two list. Complexity if both list are sorted and non sorted.
3) String compression question. eg: i/o: aabbbcdde o/p: a2b3cd2e. Famous question in LC.

Round 4: Design Round LLD as well as HLD: Interviewer asked me to design a parking lot system with multiple floor parking and it should also accept online booking of parking and allow multiple vehicle parking and how will you scale and what database architecture will you used.

Round 5: Hiring manager round . It was more like machine coding round rather than a Mangerial round. Interviewer directly given me an Spring boot application and asked me to create two end point for getting employee_id from database and saving an employee in database. Employee have several field optional and several mandatory. Although able to do it in 30 40 bit but seems like interviewer is not satisfied with the answer .In the end he said i was expecting a design pattern,exception handling and idempotency handling in the code.
I got the rejection mail today by recrutior but didn't got feedback of the last round that why i got rejeted and where i need to improve. This is something which i hate about giving interview no feedback provided by HR team

Note : All Round of technical interview they asked me to write the full production ready code in editor. suggestions are welcome.
Thanks !!