I'm in tech and still had a difficult time finding a job that would provide a visa. And the visa process is a minimum of 2 to 3 months, meaning even if you got the job, you can't legally work for a long time, and hopefully they get you the visa before your traveling visa expires otherwise you get to fly out of the country to renew. Not necessarily cheap. Further, many jobs require strong Japanese skills which is a huge hurdle IMHO. I would hardly say it is easy.