Career & application guide

Microbiologists

Get to know the work, the skills that matter, and how to prepare your next application.

Explore this guide

What do microbiologists do?

Investigate the growth, structure, development, and other characteristics of microscopic organisms, such as bacteria, algae, or fungi. Includes medical microbiologists who study the relationship between organisms and disease or the effects of antibiotics on microorganisms.

This describes a U.S. occupation, not a live vacancy. Individual employers may use different titles and requirements.

Job titles to recognize in your search

O*NET reports these titles for this occupation. Compare the responsibilities in each posting before treating titles as equivalent.

  • Bacteriologist
  • Clinical Laboratory Scientist (Clinical Lab Scientist)
  • Clinical Microbiologist
  • Medical Technologist
  • Microbiological Analyst
  • Microbiologist
  • Public Health Microbiologist
  • Quality Control Microbiologist (QC Microbiologist)

Core tasks to compare with a job posting

  • Isolate and maintain cultures of bacteria or other microorganisms in prescribed or developed media, controlling moisture, aeration, temperature, and nutrition.
  • Provide laboratory services for health departments, community environmental health programs, and physicians needing information for diagnosis and treatment.
  • Monitor and perform tests on water, food, and the environment to detect harmful microorganisms or to obtain information about sources of pollution, contamination, or infection.
  • Examine physiological, morphological, and cultural characteristics, using microscope, to identify and classify microorganisms in human, water, and food specimens.
  • Supervise biological technologists and technicians and other scientists.
  • Use a variety of specialized equipment, such as electron microscopes, gas and high-pressure liquid chromatographs, electrophoresis units, thermocyclers, fluorescence-activated cell sorters, and phosphorimagers.
  • Investigate the relationship between organisms and disease, including the control of epidemics and the effects of antibiotics on microorganisms.
  • Prepare technical reports and recommendations, based upon research outcomes.
  • Observe action of microorganisms upon living tissues of plants, higher animals, and other microorganisms, and on dead organic matter.
  • Study growth, structure, development, and general characteristics of bacteria and other microorganisms to understand their relationship to human, plant, and animal health.

Prepare an application for this occupation

  1. Check the employer’s requirements, location, schedule and any licenses against your situation.
  2. Choose two or three tasks above that match the posting and your actual experience.
  3. Build a resume evidence worksheet using the skills and software relevant to that employer.
  4. Practice explaining your contribution, decisions and results before an interview.

Ready to plan your search?

Start with microbiologists as your target. You can change your role in the quiz and tell us your location and work preferences.

Explore related occupations