Wipro Technical Lead interview questions

It’s four weeks process and directly took me to client interview . All are core technical question and last round is HR and account manager. All are okay and I accepted the offer .

Total 3 rounds of Interview 1st round technical kind of basic questions in dot Net, oops concept than 2nd round HR round, 3rd round mainly ask about design pattern same oops, solid principle and some coding test. There is no proper sequence, But this process took 1 month, after multiple follow up with HR there was no feedback so I lose hope but suddenly after one month HR call me and say we have released offer letter kindly approve asap, if you have any other offer you can negotiate with them I believe HR have some budget if your demand comes under their criteria they will immediately release updated offer letter if you have over salary expectation it will take another 1 week to get approval from Hiring Manager.