You can firstly check the institute's website to know if they have mentioned any placement report or so. Normally institutes do mention on their website, the companies which came to the campus for recruitment. Secondly, you can also check the with the students who have just passed out to know which are the companies that came for recruitment. Also get in touch with the placement cell, they might also assist you.
Highest package is 23lpa by Amazon.
Good communication, technology skills and certification is must alongwith good CGPa for top companies.