Try getting a bigger cage, try buying an aquarium (one that's large enough for him to run around in, 15 gallon is a nice size), try putting wood chews or toilet paper cardboard rolls in with him. It's natural for them to carry on at night time, they are nocturnal. It does sound like he could use some more stimulation though, things to chew up and things to climb on, do you have a wheel in his cage? I used to call my hamsters' wheels "boogie balls". That may releave some of his bordom, but often wheels will squeak.