"The Vietnamese business will then apply to Immigration to sponsor you...."
OK . Thats fine. But what will immigration want to know about the sporsoree? Do they have to be specially qualified or is it enough that the Vietnamese company wants to hire them?
Is this business visa only good for 3 months ?
Keep in mind that the company must pay Immigration to sponsor you, so they must have a financial interest in being your sponsor. --- OK but how much ?
I imagine that this visa is pretty easy to get if the company wants to hire the foreigner right?
- @mikedylan2001
It's almost certain that Immigration will want to know more about you than you'd prefer to tell them.
Yes, different jobs will have different requirements (Teacher, Project Manager, etc) but the prospective employer does indeed need to convince immigration that:
1. They can't find a Vietnamese person to fill the position.
2. The person they want to sponsor for employment is fully qualified for the position.
Before we get too far down the rabbit hole, it would be helpful if we moved from general hypotheticals to the specifics of your situation:
What specialized employment qualifications (education and certifications) and experience would you be including in a CV or data for a headhunter?
Because it's pretty clear you aren't seriously seeking employment, but rather looking for the best way to get the visa.
If you don't meet education and certification requirements (example, a prospective English teacher needs both a bachelor's degree and certification by one of the globally recognized outfits) then you might be able to qualify if you can prove sufficient employment experience in that field.
A police check in your home nation may be required at some point in the process.
Not sure what you mean by "easy to get", since even with a willing employer and a qualified applicant, it's reported by many to be a bureaucratic nightmare, made all the more so by increased scrutiny since July 1st, 2020.
But certainly, if you are highly qualified AND well motivated for an important position with an employer who enjoys a good working relationship with Immigration, the process should be relatively easy, depending on your ability to provide pertinent documentation in a timely manner.
3 months is usually the minimum initial business visa length, allowing the employer to evaluate you fully before deciding whether or not to commit to applying for a legal work permit to keep you in your position.
Once you have a work permit, you can then look into getting a temporary residence card for the duration of your employment contract.