Optum Senior Software Developer interview questions

Clueless HRs worth for nothing. Took interview all cleared. Sent a selection mail to share the documents, Asked to fill BGV verification very long form. Promised to call back after 2 days but never called back. Always wanting to buy notice period, I had already told the np before interview. Then why take the interview if notice period is so long for you?

Got a call through naukri. 4 rounds of interview. R1 : Coding R2 : Coding R3 : Big Data Design Problem R4 : Managerial All of them were simple. I didn't have much big data design experience. All rounds had basic programming and Java theory. R3 had a lot of big data design and Spark SQL and many big data concepts.