Ægteskabudengrænser.dk

I came on student visa to study civil engineering but before I finish first semester, I got a job offer
as manager of restaurant paying 36.000 kr monthly salary.

So I would like to take this offer. But I need to change from student to work visa. To do so, Can I just apply from here since my visa is valid here or do I need to go back to my country (non-eu) and apply work visa and return back?

Please help me with advise soonest possible

Regards,
Manny

As long as you are still studying and following all courses and your student visa is still valid, you can apply from within Denmark.