There are jobs for Japan on LinkedIn but in my experience its usually one of the big international companies that are advertising on their. So companies like IBM, Microsoft, Google, etc. It doesn't hurt to try.
Another tip to try would be to use http://jp.indeed.com as I mentioned earlier. In the keyword box, search for a skill or technology you are good with or you want to use in your next job and then add in 英語. You'll likely pull up all the jobs where the company wants someone that can use English. Again, doesn't eliminate the possibility about troubles with being a foreigner applying but I'd imagine you'll get people that call/email you back. ("Hey this dude read our all Japanese, kanji heavy job posting, maybe he can speak Japanese!")
If you are doing a lot of your hunting by hand, stop. Setup job a number of email job alerts. This way you'll see all the new postings almost immediately. Some places still send out emails for old jobs though. Glassdoor tends to email me once a month about jobs in Japan and I get excited cause its for Google and then look and see that the posting is 30 days+.
Another tip to try would be to use http://jp.indeed.com as I mentioned earlier. In the keyword box, search for a skill or technology you are good with or you want to use in your next job and then add in 英語. You'll likely pull up all the jobs where the company wants someone that can use English. Again, doesn't eliminate the possibility about troubles with being a foreigner applying but I'd imagine you'll get people that call/email you back. ("Hey this dude read our all Japanese, kanji heavy job posting, maybe he can speak Japanese!")
If you are doing a lot of your hunting by hand, stop. Setup job a number of email job alerts. This way you'll see all the new postings almost immediately. Some places still send out emails for old jobs though. Glassdoor tends to email me once a month about jobs in Japan and I get excited cause its for Google and then look and see that the posting is 30 days+.