I suggest you look on the Deloitte Careers website for deadlines.

You’ll want to show that you have the skills required for consulting: problem-solving, teamwork, quantitative skills, and communication. You can show these through work experience, but you could also show them through your courses at school, extracurricular activities, and even hobbies.

Good luck!

I’m not sure. I’d reach out directly to Deloitte recruiting with that question.

But you might like to check out this article:
https://www.myconsultingoffer.org/list-top-management-firms/h1b-visa-sponsorship/

Good luck!

Can I apply as an immigrant?

In general, consulting firms get back to applicants within a month of their application deadlines, either with next steps in the process or a “ding.” Good luck with your application!