Career fairs, info sessions, sponsorship (Score 1)

Participate in college career fairs and make yourself visible. At a place like MIT these are taken fairly seriously, but make sure to bring free swag (students like free swag). Some companies hold info sessions with free food. Others sponsor student events and competitions, it's a great way to gain appreciation from the students and get seen on posters around campus. Software engineers at these "top schools" rarely need to look very far to find a company that appeals to them, so it's important that you get them to know who you are and what you do.