If you want to start working soon, it is recommended that you apply for the orientation year online. The IND strives to handle your online application in 2 weeks if it is complete. In general, you can collect your residence permit within a week after your application has been handled.
If you cannot wait 3 weeks, because you have already found a job and your employment contract starts within 3 weeks, you can get a (free) residence endorsement sticker in your passport at an IND desk. The sticker will be valid while your application is pending and states that you reside legally in the Netherlands and that you have free access to the Dutch labour market. This means you can start working immediately after you have collected the sticker. You do not have to wait for the residence permit itself.
If you apply online or by post and your application is complete, you can get the sticker after your application has been registered. If you apply at an IND desk, you can get the sticker immediately if you submit all requested documents with your application. You will have to make an appointment by phone if you want to submit your application at an IND desk.
You cannot get a residence endorsement sticker if you applied for an MVV abroad and that application is still pending.