[GoNative]

The really hard part is getting a company to sponsor your visa. The teaching english route is one of the easier ones to take to get the visa and once you've got it you are able to move onto other things. If you have studied here though and speak fluently then I'm sure you would be able to build up a network of friends and contacts that may be able to assist you after graduation. It really depends on the position you're after and it's not just about whether a company is willing to employ you it's about whether immigration will accept their application to sponsor you. Generally they have to show a pretty good reason to hire a foreigner over a Japanese person. Depending on the company, this can be fairly easy or extremely difficult.