Cross: 

1        a person whose job is to connect, repair, etc. electrical equipment (11)
2        a person who creates works of art, especially paintings or drawings, etc. (6)
3        a person whose job is carrying people’s bags and other loads, especially at a train station, an airport or in a hotel (6)
4        a person who works in an office, working for another person, dealing with letters and telephone calls, typing, keeping records, arranging meetings with people, etc. (9)
5        a person whose job is welding metal (6)
6        someone whose job is to cut people’s hair (11)
7        a person whose job is to make men’s clothes, especially somebody who makes suits, etc. for individual customers (6)
8        a person whose job is keeping a particular type of equipment or machinery in good condition (10)
9        a person whose job is to fit and repair things such as water pipes, toilets, etc. (7)
10     a woman whose job is to clean bedrooms, usually in a hotel (11)
11   a person whose job is cutting up and selling meat in a shop/store or killing animals for this purpose (7)
12   a person whose job is to cut men’s hair and sometimes to shave them (6)

Down:

1        a doctor who is trained to perform surgery (7)
2        a person whose job is making and repairing wooden objects and structures (9)
3        a person whose job is to sell fish in a shop (10)