When I was looking to move into the civilian sector, these were good websites to start looking at, especially as a USAFA grad. Networking is important, if you have a contact inside the firm it is almost always better than the group interview, job fair avenue.
https://www.acp-usa.org/
https://www.jsaje.com/
https://sacc-jobfair.com/
https://veteransonwallstreet.com/
https://www.wallstreetwarfighters.org/web/