Looking for insights on Virtusa onboarding and recommended skills before joining

I got placed at Virtusa through my campus and wanted some clarity on how their onboarding process generally works. If anyone who joined recently can share how offer letters, document submission, and joining formalities usually happen, it would be helpful.

I also want to use this time to build the right skills. I’m currently focusing on Core Java, SQL, DSA, and Git, but I’m not sure if I should also start learning Spring Boot or basic cloud concepts.

If you have experience with Virtusa’s training or projects, please share which tech stack or skills are commonly used and what would be most useful to prepare in advance.