What a microbiologist really does
You grow, identify and track microbes in food, water or patient samples, and your results decide whether something is safe.
FieldScience and engineering
Preparation (O*NET Job Zone)Considerable preparation needed
What the work involves
What fills a typical week for microbiologists, built from O*NET occupation data.
- Plate samples on culture media, incubate them and read the growth
- Identify organisms using colony appearance, stains, biochemical tests and PCR
- Test food plant surfaces, water or products for harmful bacteria like Listeria or E. coli
- Record results in a lab information system and flag positives fast
- Guide and check the work of lab technicians
- Write reports and recommendations when contamination shows up
- Work in protective gear around infectious material most days
What the days are like
What people in the job know
- You work around infectious material most days, so safety habits are constant. Exposed to disease or infections: 64% every day; Wear common protective or safety equipment: 86% every day (O*NET Work Context)
- Mistakes can be extremely serious because results decide whether food or products are safe. Consequence of error: 50% extremely serious; Importance of being exact or accurate: 73% extremely important (O*NET Work Context)
- Time pressure is daily. Microbes grow on their own schedule and people want answers before they can be had. Time pressure: 41% every day (O*NET Work Context)
- A lot of the job is hands on and repetitive bench work. Spend time using hands to handle, control, or feel objects: 41% more than half the time; Spend time making repetitive motions: 36% more than half the time (O*NET Work Context)
- Supervising technicians is a high importance part of the role, not only a senior duty. Task 5 (importance 80): Supervise biological technologists, technicians, and other scientists (O*NET)
How people get into it
O*NET places this in Job Zone 4. Most respondents (64%) say a bachelor's degree in microbiology or biology is required for new hires; 14% report a master's degree and 9% an associate's degree. Many start as lab analysts or technicians in food safety, public health, clinical or pharmaceutical labs.
The Firstday trial, easy to hard
Three simulated tasks with AI coworkers who message you, react to your work and coach with questions. Nobody scores you.
What the trial can't show: This trial cannot simulate aseptic technique, plating, streaking, staining, pipetting, running PCR instruments, or working safely in a biosafety cabinet with live pathogens. It covers reading and interpreting results, identification decisions, trend analysis, documentation and the people side, using detailed descriptions of plates, stains and test results.
Reading about it is one thing.
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Job details on this page are built from O*NET OnLine, 19-1022.00. This page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY 4.0 license. O*NET® is a trademark of USDOL/ETA.