How do I ask someone's job?
I know that I can ask as below:

A: What's your brother?
Q: He is a technician.

Is it right? Is there any other way to ask such question?

Question

How do I ask someone's job?
I know that I can ask as below:

A: What's your brother?
Q: He is a technician.

Is it right? Is there any other way to ask such question?

Answer

What does your brother do for living?
What is your brother job?
what kind of job does your brother do?
Where does your brother work?