5 Great Careers for ISTJ Personality Types

ISTJ is a personality type that stands for introversion, sensing, thinking and judging. People with these personalities are decisive, base their decisions on facts and logic, prefer structure and value productivity. They are dependable, loyal, quiet, responsible and serious individuals who thrive in careers that allow them to use their concentration and organizational skills to create and maintain order. These characteristics mean that people with ISTJ personalities perform well in a wide range of careers, according to Ball State University.


Dentists use a variety of medical equipment to diagnose and treat gum, teeth and other oral health problems. Some of this equipment includes digital scanners, drills, forceps, lasers, probes, scalpels and X-ray machines. They also provide patients with guidance and instruction on caring for their gums and teeth and making healthy diet choices. Dentists must complete an accredited dental school program and pass practical and written exams to obtain a license, the requirements for which vary by state, according to the Bureau of Labor Statistics. Those who practice a specialty such as endodontics, orthodontics, periodontics and prosthodontics must complete additional education and pass more stringent exams to become licensed.


Detectives are officials who collect evidence and gather facts for criminal cases. This career can be dangerous, physically demanding and stressful. Since they could work for local, state or federal law enforcement agencies, detectives may wear plain clothes or uniforms. Their duties generally involve examining records, interviewing witnesses, observing suspects’ activities and participating in arrests and raids. Most detectives are police officers who have been promoted, and although a college degree is not always required, having a degree gives candidates an edge for the position. A majority of police officers and detectives must also graduate from a training academy and complete some on-the-job training.


Employed by local, state or federal governments, judges preside over hearings and trials regarding almost every facet of society. In hearings, they listen to defendant and prosecution arguments and determine whether the evidence deserves a trial. For criminal cases, they could approve arrest and search warrants, decide to incarcerate the defendants until their trials or set conditions for their release. Judges interpret the law to determine trial proceedings and ensure that trials are conducted with fairness. They decide cases and impose penalties or award relief. If there is a jury, they provide the jurors with instruction on applicable laws and considering the evidential facts. Most judges have law degrees and practice law before being appointed.

Tax Collector or Examiner

Tax collectors and examiners ensure that citizens and businesses pay their taxes to local, state and federal governments. Entry-level tax examiners perform clerical tasks such as entering returns into the computer for processing. They might also contact taxpayers to resolve outstanding issues. When taxpayers owe more than they paid, tax examiners adjust the total for interest, fees and penalties. They send their reports to collectors when taxpayers become delinquent on payments. Tax collectors send notices to the taxpayers and work with them to settle their debts. If the taxpayers cannot pay, they conduct an investigation and decide whether the IRS should issue a lien or garnish wages. A bachelor’s degree in accounting or a related subject is usually required for this career.


Surgeons use a variety of medical instruments to correct physical disfigurements, repair bones and tissues following injuries, and perform elective operations. They may even cure diseases such as cancer. Like general physicians, surgeons perform patient examinations and diagnostic tests as well as interpret the test results. Following treatment, they provide instruction on preventive health care. Most surgeons practice specialties such as cardiovascular, neurological, orthopedic, and cosmetic or reconstructive surgery. Due to the risks associated with operations, surgeons must complete strict education and training requirements, including undergraduate school, medical school, an internship and a residency, as well as obtain a license.

Related Resource: 30 Great Small Colleges for ISTJ Personality Types

These careers require individuals to be decisive, logical, objective, organized, practical and rational, all of which are traits of the ISTJ personality type. Students with this personality could discuss other career options with university counselors or staff to determine a field best suits their interests.