In the majority of cases, your future employer in Denmark will contribute with information for the application.
There are several different options for a residence and work permit in Denmark; your education, qualifications and the type of job you have been offered are important to how you should apply.
Please notice that it is the Danish Immigration Service, which is the responsible administration for this. Read more and find contact information at their site New to Denmark.
You can also check out what else to remember at our step by step site.