Hi,
The Nova Scotia PNP is one of the most attractive PNPs in place for international graduate students.
According to: http://novascotiaimmigration.ca/immigrants/immigrating-to-ns/international-graduate
The international graduate must have a full-time, permanent job offer, preferably related to their field of study from a Nova Scotia employer and be working for that employer for at least three consecutive months before submitting an application to the Nova Scotia Nominee Program (NSNP). Provincial priorities may change as skill shortages are met by permanent residents or Canadian citizens.
To be eligible to apply to the International Graduate stream, the graduate must have graduated within the last three year from a program of at least one academic year of full-time study in Canada and have received a certificate, diploma, or degree from a provincially-recognized institution in Canada. Applicants still in study are not eligible to this stream.
NOW, the tricky part is THEY HAVE NOT MENTIONED ANY NOC LEVEL CRITERIA, and 've mentioned ONLY a permanent full time job offer and doing it for 3 months, preferably in their field of study. This may lead to confusion, that this is open to ANY kind of full time permanent job. However, when you read the application guide in detail: http://novascotiaimmigration.ca/sites/default/files/NSNP_IG_ApplicationGuide.pdf , you'll see that even though they 've not mentioned any NOC level. there are indeed some restrictions on the TYPE of full time permanent job you can do. Here on page 7, under When not to apply it is clearly mentioned that THESE FOLLOWING JOBS ARE NOT VALID:
1. Seasonal, part-time, casual, or contractual workers.
2. Workers in occupations that consist primarily of training, internship and work placements.
3. Sales positions that are based solely on commission for compensation.
4. Entry level hospitality industry jobs (e.g., server, hotel clerk, receptionist) and other entry-level service sector jobs.
5. Helpers and labourers in construction, agriculture and resource industries.
6. Live-in-caregiver positions - These positions should be processed under federal Citizenship and Immigration Canada guidelines
So, apart from the following above jobs, you can do ANY other full time permanent job, preferably in the field of your study for 3 months and then apply for PNP. It's indeed confusing, because they 've not mentioned any NOC criteria. But from the above list..it's obvious..NOC D and NOC C level jobs in service sector is not valid (which are often the easiest to get).
Hope it helps.