With the orientation year you will have time to find a job as a highly skilled migrant in the Netherlands. During the orientation year you can work freely in the Netherlands. This means that your employer does not need a work permit for you. And your employer only has to pay at least the legal minimum wage (including holiday allowance). You can also use the orientation year to start your own business.
Did you find a job as a highly skilled migrant? In that case a reduced salary criterion applies to you. This makes it easier and cheater for an employer to hire you. You keep the reduced salary criterion, also when you change employers. Read the requirements for a residence permit for highly skilled migrant.