Within the different professional vacancies to be convened, there are four previous levels:

1.- CATEGORY OF DIRECTORS: (AD1)

a) University studies of at least 4 years (Degree, Engineering, Architecture, Law, Mathematics, Programming, Physics...)

b) University studies of at least 3 years (Diplomas, technical careers...).

2.- EXPERTS CATEGORY: (EP2)

a) University studies of at least 4 years (Bachelor's degree, Engineering, Architecture, Law, Mathematics, Programming, Physics...).

b) University studies of at least 3 years (Diplomas, technical careers...). 

3.- CATEGORY OF ASSISTANTS (AS3)

a) University studies of at least 3 years (Diplomas, technical careers...)

b) Bachelor's degree and equivalent, FPII, Higher Technician, Specialist Technician, ...

4.- CATEGORY OF SCHOLARSHIP HOLDERS: (BC4)

a) University studies of at least 4 years (Bachelor's degree, Engineering, Architecture, Law, Mathematics, Programming, Physics, ...).

b) University studies of at least 3 years (Diplomas, technical careers, ...). 

c) Bachelor's degree and equivalent, FPII, Higher Technician, Specialist Technician, ...

The salaries for each vacancy are determined by the category, the grade, the duration of the contract, the type of workday and the jurisdiction where the offered work will be presented.

For example, in Geneva, Switzerland: Currency Swiss Francs (CHF)

1. An AD1's average salary is about 5,400 CHF/month.
   
2. An EP2 has an average salary of 4,300 CHF per month.
3. The average salary for AS1 is about 3.550 CHF/month.