this type of visa is common for highly specialized equipment operators on oil drilling platforms, or special-skilled technicians of new and cutting edge equipment.

the process to obtain a work visa should be initiated by the companyintending to hire their future employee.

in fact, potential visa-holders are required to have received a written job offer from a Brazilian company, that then applies on behalf of the worker to the Ministry of Labor, Immigration Division (ministério do trabalho - coordenação de imigração).

this link by the Ministério do Trabalho e Emprego - MTE (ministry of labour and employment) opens the form to be filled for a work permit while this page by the MTE lists the guidelines for a variety of types of work permits.