I came to dubai in visit visa under a company they...

Yes, the visa can be transferred without the need to exit and it must be transferred to a work visa by searching for a sponsor who agrees to transfer the sponsorship with attention to the fact that if you have a visit or tourist visa without a work letter, first, it is not permissible to work on a tourist or visiting visa in the country, but it is possible to work after converting the visa from tourism to work without the condition of leaving the country in exchange for paying the transfer fees approximately 570 dirhams, knowing the difficulty lies in the small details so transferring the visa itself is not a difficult matter at all