Tesla was on campus spring semester: https://engineering.purdue.edu/ECE/Academics/Undergraduates/UGO/Undergraduate_Resources/Announcements/tesla-information-session
NASA sponsors a bunch of programs at Purdue and there were speakers galore from NASA this year: https://www.purdue.edu/business/sps/preaward/menu/3.templates/nasa.html
SpaceX has definitely been to campus in the past but wasn’t on the list this year. Doesn’t mean students don’t apply to work there though!