www.si.edu/ohr/jobs_public
Some of these are temporary listings, and some require experience within SI to apply. It's still worth a look, though. There are even openings for the Smithsonian-adjacent ventures, like the IMAX
Maybe the Richard Avedon exhibit at the American History museum.
https://www.si.edu/exhibitions/re-framing-conversations-photographs-richard-avedon-1946-1965%3Aevent-exhib-6654
geekonthemoon t1_izeifqs wrote
Reply to comment by pulus in The Smithsonian's open access library, containing millions of digital assets under a creative commons license (you can even use them for commercial work)! by Rishloos
Copyright by someone else. But otherwise you can literally do anything you want with their assets. https://www.si.edu/openaccess/faq