I applied through website Then HR interview, then they send a code assessment which was similar to leetcode problems, then they gave a technical interview constant it was straightforward about projects, then they told me to send my CV in their format, and now I am waiting for a panel interview with client and team, Can any one help me prepare?

Easy going. The technical recruiter had a bunch of questions written beforehand, so he was looking at his notes and asking technical questions. Overall, they ask you to choose your expertise, and then they start asking questions from there.