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Microbiology
Performs professional microbiological work including study of bacteria, viruses, fungi, and other microorganisms.
What GS-0403 pays
2025 base rates, before locality. Most federal employees add a locality adjustment on top.
| Grade | Step 1 | Step 2 | Step 3 | Step 4 | Step 5 | Step 6 | Step 7 | Step 8 | Step 9 | Step 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| GS-5 | $34,454 | $35,603 | $36,752 | $37,901 | $39,050 | $40,199 | $41,348 | $42,497 | $43,646 | $44,786 |
| GS-7 | $42,679 | $44,102 | $45,525 | $46,948 | $48,371 | $49,794 | $51,217 | $52,640 | $54,063 | $55,486 |
| GS-9 | $52,205 | $53,945 | $55,685 | $57,425 | $59,165 | $60,905 | $62,645 | $64,385 | $66,125 | $67,865 |
| GS-11 | $63,163 | $65,268 | $67,373 | $69,478 | $71,583 | $73,688 | $75,793 | $77,898 | $80,003 | $82,108 |
| GS-12 | $75,706 | $78,229 | $80,752 | $83,275 | $85,798 | $88,321 | $90,844 | $93,367 | $95,890 | $98,422 |
| GS-13 | $90,025 | $93,026 | $96,027 | $99,028 | $102,029 | $105,030 | $108,031 | $111,032 | $114,033 | $117,034 |
| GS-14 | $106,382 | $109,928 | $113,474 | $117,020 | $120,566 | $124,112 | $127,658 | $131,204 | $134,750 | $138,296 |
Base pay only. Locality pay adds 15 to 40 percent or more depending on where the job sits. Source: OPM 2025 General Schedule.
Qualification requirements
OPM's standard for GS-0403, as written.
Degree: microbiology; or biology, chemistry, or basic medical science that included at least 20 semester hours in microbiology and other subjects related to the study of microorganisms, and 20 semester hours in the physical and mathematical sciences combining course work in organic chemistry or biochemistry, physics, and college algebra, or their equivalent.
OR
Combination of education and experience: courses equivalent to a major in microbiology, biology, chemistry, or basic medical science that included courses as shown in A above, plus appropriate experience or additional education.
Graduate Education: Microbiology, or specific area of study such as bacteriology, virology, mycology, algology, protozoology, parasitology, immunology, serology, microbial genetics, or soil microbiology; or specific applied fields of microbiology such as clinical and public health microbiology, food tech-nology, production processes, industrial fermentation, pollution, etc. Graduate study in related fields such as experimental pathology, infectious diseases, epidemiology, biochemistry, animal or plant physiology, genetics, plant pathology, and insect disease control, may also be pertinent, provided it has direct application to microbiological work.
Evaluation of Education: Microbiology is a broad field of science encompassing a number of scientific disciplines or areas of science, the fields in which this science is applied, and related fields where the work is concerned with or involves microbiology. The scientific disciplines or areas of this science include bacteriology, immunology, serology, algology, mycology, parasitology, protozoology, rickettsi-ology, tissue culture, virology, and similar disciplines or areas of science. The applied fields include environmental, food, dairy, soil, industrial, public health, clinical, and agricultural microbiology, and similar areas in which microbiology is applied. Related fields include taxonomy and systematics, plant, animal, or human physiology or pathology, infectious diseases, epidemiology, ecology, and similar areas of science where the work is directly related or applies to microbiology. Except where the course work deals with a limited and specific segment of the science, where it might be limited in usefulness, most of the work, including that dealing with the development and use of microbiological methods, procedures, and techniques, is qualifying. In interpreting the substantive value of the course work, credit may be given for courses in related fields, depending on the degree to which the courses are related to micro-biological work.
Evaluation of Experience: For positions at GS-9 that involve a substantial amount of work in a specific specialized area or applied field of microbiology, at least 6 months of the experience must either have been in the appropriate area of specialization or applied field of microbiology, or have direct application in the area for which the applicant is being considered. For the GS-11 and higher grade levels of such specialized positions, the experience must have been sufficiently specialized to insure adequate familiarity with the area of specialization or applied field of microbiology, or have direct application in the area for which the applicant is being considered.
Alternate requirement: For GS-14 clinical and public health microbiology positions, certification by the American Board of Medical Microbiology/American Board of Medical Laboratory Immunology, or election to Fellowship in the American Academy of Microbiology fully meets the experience requirement for such positions.
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What this means if you served
- Write the duties, not the billet. OPM credits military experience on the work performed, and does not use rank or pay to judge specialized experience.
- Put the training and certifications you earned in service on the page. They count here.
- Claim your veterans preference on the application. It is not applied for you.
- No positive education requirement here, so qualifying experience can stand in for the education.
How to qualify for GS-0403
1Review Qualification Requirements
Read the OPM qualification standards above to understand the education and experience requirements for your target grade level.
2Find Your Grade Level
Grade follows the scope and complexity of the work you can document against the announcement, not the rank you held. OPM does not use military rank or pay when it evaluates specialized experience. Roughly: GS-5 entry, GS-7/9 junior, GS-11/12 journey, GS-13 and up senior.
3Gather Documentation
Collect your DD-214, SF-50 (if applicable), transcripts, certifications, and any training records that demonstrate your qualifications.
4Build Your Federal Resume
Two pages. USAJOBS has enforced that limit since 27 September 2025 and will not accept a longer resume from a Title 5 agency posting, so the space has to answer every qualification requirement. Include hours worked per week, supervisor contact details, and the accomplishments with numbers on them.
5Apply on USAJOBS
Search for open positions, carefully answer all assessment questions, and submit your application before the closing date.
Military jobs that map to this series
Preventive Medicine Specialist
Water and food microbiology sampling supports the Microbiology series in laboratory and quality-control settings.
Skills that carry over: Microbiology sampling, Culture and analysis, Quality control, Lab safety.
Usually opens at: GS-5, GS-7, GS-9.
Your record can qualify you even when your code is not on this list. The crosswalk is a starting point, not the gate.
Typical duties
- Conduct microbiological research and testing
- Isolate and identify microorganisms
- Perform antimicrobial susceptibility testing
- Develop microbiological methods
- Analyze microbiological data
- Ensure laboratory quality control
Key competencies
Microbiology Knowledge
Understanding of microorganisms and their properties.
Laboratory Skills
Proficiency in microbiological techniques.
Research Methods
Ability to design and conduct microbiological studies.
Biosafety
Knowledge of biosafety levels and procedures.
Analytical Skills
Ability to analyze and interpret microbiological data.
Scientific Communication
Skill in documenting research findings.
Words the announcement will use
Use the ones your record actually supports. A rater is matching your experience against the specialized experience statement, and a keyword with nothing behind it does not survive that.
Questions about GS-0403
What is a Microbiology position?
A GS-0403 Microbiologist studies microorganisms including bacteria, viruses, fungi, and parasites. Federal microbiologists work at CDC, NIH, FDA, and USDA conducting research on infectious diseases, food safety, and biotechnology.
How much does a federal Microbiologist make?
Microbiologists earn between $42,679 (GS-7 Step 1) and $138,296 (GS-14 Step 10) under the 2025 GS pay scale. Most positions are GS-11/12/13, earning $63,163-$117,034 annually.
What are the requirements for GS-0403?
GS-0403 positions require a degree in microbiology or biological science with specific microbiology coursework. Higher grades require progressively more specialized laboratory and research experience.
Can military experience substitute for education in GS-0403?
Military experience cannot substitute for required microbiology education. However, veterans with microbiology degrees who served in medical or CBRN roles have applicable laboratory experience.
What is the career progression for Microbiologist?
The career ladder follows GS-7/9/11/12/13/14 intervals. Entry-level microbiologists conduct laboratory work. Senior microbiologists lead research programs and advise on policy.
How do I apply for GS-0403 jobs?
Search USAJOBS.gov for Microbiologist or 0403 series. CDC, NIH, FDA, and USDA are major employers. Your federal resume should detail laboratory skills and research experience.
Ready to apply for GS-0403?
A rater matches your record against the announcement's specialized experience statement, inside two pages. BMR writes that shape from your own experience: competency headers, real scope, hours per week, and the supervisor detail the rater checks.