The whole occupations for International Skilled Worker program without Job Offer are these:
(NOC) (Occupation) (Skill Level Mandatory (compulsory) certification or licensing)
0711 Construction Managers 0 No
1111 Financial auditors and accountants A No
1232 Loan Officers B No
1241 Secretaries (except legal and medical) B No
2131 Civil Engineers A Yes
2132 Mechanical Engineers A Yes
2133 Electrical and Electronics Engineers A Yes
2161 Mathematicians, Statisticians, and Consultants A No
2171 Information Systems Analysts and Consultants A No
2173 Software Engineers and Designers A Yes
2174 Computer Programmers and Interactive Media Developers A No
2211 Chemical Technologists and Technicians B No
2221 Biological Technologists and Technicians B No
2222 Agricultural and Fish Products Inspectors B No
2232 Mechanical Engineering Technologists and Technicians B No
2234 Construction Estimators B No
2241 Electrical and Electronics Engineering Technologists and Technicians B No
2242 Electronic Service Technicians (household and business equipment) B No
2253 Drafting Technologists and Technicians B No
2254 Land Survey Technologists and Technicians B No
2281 Computer Network Technicians B No
2282 User Support Technicians B No
2282 Systems Testing Technicians B No
4121 University Professors A No
4163 Business Development Officers and Marketing Researchers and Consultants A No
6221 Technical Sales Specialists, Wholesale Trade B No
7215 Contractors and Supervisors, carpentry trades B No
7217 Contractors and Supervisors, Heavy Construction Equipment Crews B No
7219 Contractors and Supervisors, Other Construction Trades, Installers, Repairers and Servicers B No
7222 Supervisors, Motor Transport and Other Ground Transit Operators B No
7231 Machinists and Machining and Tooling Inspectors B No
7232 Tool and Die Makers B No
7241 Electricians (except industrial and power system) B Yes
7242 Industrial Electricians B Yes
7246 Telecommunications Installation and Repair Workers B No
7251 Plumbers B Yes
7252 Steamfitters, Pipefitters and Sprinkler System Installers B No
7261 Sheet Metal Workers B Yes
7263 Structural Metal and Platework Fabricators and Fitters B No
7265 Welders and Related Machine Operators B No
7271 Carpenters B No
7281 Bricklayers B No
7282 Concrete Finishers B No
7283 Tilesetters B No
7284 Plasterers, Drywall Installers, Finishers and Lathers B No
7291 Roofers and Shinglers B No
7292 Glaziers B No
7293 Insulators B No
7294 Painters and Decorators B No
7295 Floor Covering Installers B No
7311 Construction Millwrights and Industrial Mechanics (except textile) B No
7312 Heavy-duty Equipment Mechanics B No
7313 Refrigeration and Air Conditioning Mechanics B Yes
7316 Machine Fitters B No
7321 Automotive Service Technicians, Truck and Bus Mechanics and Mechanical Repairers B No
7322 Motor Vehicle Body Repairers B No
8232 Oil and Gas Drillers, Servicers, Testers and Related Workers B No
8253 Farm Supervisors and Specialized Livestock Workers B No
9212 Supervisors, Petroleum, Gas and Chemical Processing and Utilities B No
9213 Supervisors, Food, Beverage and Tobacco Processing B No