I'm also a college junior and have been looking to gain development experience. I recently just had success emailing a startup in my area using their jobs@start

I'm also a college junior and have been looking to gain development experience. I recently just had success emailing a startup in my area using their jobs@startup.com address. I listed some of my skills, gave a link to a project that I did, and told them why I was passionate about what they were doing. The CEO ended up emailing me back the same day. If anyone else is in this position I'd recommend trying this first since it's very good way to express interest in a possible job opportunity with a company.