INTJs are strong individuals who seek new ways of looking at things. They are insightful and enjoy coming to new understandings. They often keep to themselves a great deal and are considered the most independent of all the sixteen personality types. They are self-confident and prefer to look to the future rather than the past. They are builders of systems and appliers of theoretical models and focus on possibilities. INTJs make up about 1% of the population and tend to prefer careers in which they are given a lot of autonomy. The following list represents some careers that may appeal to INTJs.
 
Aerospace Engineer
Animator
Anthropologist
Architect
Artist
Archivist
Astronomer
Attorney
Auditor 
Broadcast Engineer
Budget Analyst
Business Analyst
Cardiologist
Cardiovascular Technician
Chemical Engineer 
Civil Engineer
College Professor 
Computer Engineer
Computer Programmer
Computer security specialist
Computer Systems Analyst 
Corrections Officer
Credit Analyst 
Curator
Database Administrator
Dentist 
Economist
Electrical/Electronic Technician
Financial Analyst
Graphic Designer
Human Resources Manager
Judge
Mathematician
Musician
Network Administrator
Nuclear Engineer
Pharmacist
Photographer
Physicist
Pilot
Psychologist
Real Estate Appraiser
Surgeon
Systems Administrator
Systems Analyst
Teacher
Web Developer

Anthropology
Architecture
Art
Biochemistry
Biology
Business Administration
Business Information Technology
Chemistry 
Communication Studies
Computer Science
Construction Management
Counseling Psychology
Criminal Justice and Criminology
Earth Science
Economics
Education 
Environmental Design
Exercise Science
Finance 
Geology
Graphic Arts Management 
Health Science
Human Resource Management
Information Systems 
Interior Design 
International Business
Journalism
Landscape Architecture 
Legal Studies
Management 
Mathematical Economics
Mathematical Sciences 
Mathematics Education
Medical Technology
Music Technology
Natural Resources and Environmental Management
Operations Management
Physics
Pre-Dental
Pre-Medical
Psychology
Religious Studies
Sociology
Telecommunications
Urban Planning and Development

For more information on personality types visit these sites:

Betty C. Jung’s Personality Page – Jobs and Careers: http://www.bettycjung.net/Personality.htm
Columbia State MBTI Types: http://web.columbiastate.edu/careerservices/MBTI%20Types/INTJ.htm
Connecting Personality Types with Careers and Jobs: http://permanent.access.gpo.gov/websites/doigov/www.doi.gov/octc/typescar.html
DiscoverYourPersonality.com: http://www.discoveryourpersonality.com/intj.html
PersonalityPage.com: http://www.personalitypage.com/info.html
TypeLogic.com: http://www.typelogic.com/
Wayne State College Personality Page: http://www.wsc.edu/advising_services/career_planning/exploration/personality_careers/intj/