Stony Brook Business

I am a sophomore majoring in Business Management and Applied Mathematics and Statistics with a specialization in Finance. I go to Stony Brook which is not a big target school for the big banks(Goldman, JP Morgan, Barclays etc.) which recruit out of the Ivy's and top-tier schools. I want to know what I can do to land a job at a big bank and what are the steps I need to take besides off course good grades. If I apply online to many of the programs at Goldman or JP Morgan I don't know if it does anything or if my application is even seen by a human. I chose a double major in Math for this reason so I have quantitative skills which is very important in finance but need to know all the steps I need to take to land those internships. I got an internship at a Financial Firm right now which will be in the summer and also during the semester but need to know how can I get bigger and better internships next year.