Athena health ATMS role interview experience

Had applied through a referral. Round 1: Self introduction and DSA on hackerrank with shared access to the interviewer and the interviewee. Round 2: Asked some questions about my resume about projects and past internship experiences. This was mainly a design round where I focus was mainly on OOP concepts. I was asked to design a car class and add functionality to add it as per the requirement of the interviewer. Round 3: This was a managerial round and was completely resume based. He questioned about some specific choices that I had made. Round 4: This was supposed to be HR round but unfortunatley had to decline this because I had got an offer in the mean time. Additionally the JD had mentioned React JS + spring boot as their tech stack in the mangerial round I was told that their original code base was a monolith in Perl. They were converting this monolith to a mocroservice based architecture in reactjs and spring boot. Round 1: 1. Valid Paranthesis 2. Two sum Round 2: 1. Design class called car using Java