This type of visa is issued to the employing company for a certain foreigner employee to work in a specific position.
Work visa is issued for a specific position in a certain company, so it’s impossible to get a work permit KITAS before employment. You should find a job or start an own company to apply for KITAS.
Following the national government policy of native cizitens priority in job applicancies, companies willing to hire foreigner should proof the necessity of hiring a foreigner for the required positon. Some positions are totally not awailable for foreigner applicancies, other have quotations.