There is a high demand for skilled labor in Japan and they are actively searching for the person who knows Japanese language and is willing to work long time in Japan on work visa. There are Job requirements in almost every sector in Japan for example:
Engineering: Many Japanese companies (including those in the electronics, automotive and heavy manufacturing industries) are open to hiring foreign engineers.
Information Technology: Heavy demand in IT is from India and many Japanese companies are building onsite and offsite platforms that can train and hire Japanese language knowing engineers in shortest time possible.
Investment Banking: Japanese investment banks are hiring foreigners from India and other Asian countries. Those who know Japanese language or can learn in a short time are given with hiring offer and a few months on job training. Investment banks hire not only for accounts but for general marketing and IT staff members.
English Teacher: It has become the easiest and well used path to settle in Japan for foreigners. However these days it has become so popular that there is a steep rise in competition and due to the enormous supply, it has become very difficult for Asians to become an English teacher and earn a good amount of salary.
Office Work (General): These jobs are primarily based on you Japanese language skills. If you have valid visa any white collar job you can grab if you Japanese language skills are acceptable to the company.
Service Industry (General): Service Industry having the same criteria as mentioned above for the office worker in Japan, uses “Keigo” (Honorific Japanese Language) more often so it is advised to work as a normal officer for first few years in Japan before shifting to this.
Small Business: A few examples where you can work in Japan as a member of a small but growing entity, be it a start up firm, fund raising organization or an individual in requirement of assistance staff members, account managers, Hiring professionals, marketing professionals, infrastructure management team, localization or product distribution staff. Few examples can be Photographers, Amazon product distributers, Wild life Videographers, Survey staff, Bar owners, Restaurant owners, Japanese language School management, Sales and recruiters, Governmental Research and Development staff, or even Television presenters or models.