If you're an engineer, and you're talented / motivated, you honestly should have no problem finding work in Japan.
However, something that you
MUST do is study abroad / intern in Japan while you are in college. If you're university doesn't offer any study abroad programs or internships to Japan, a simple google search will find you at least 20 summer / semester engineering internships with Japanese businesses. I have had friends do some of these programs, so if you have any specific questions feel free to shoot me a PM
.