Hello buddy you have many career opportunity after completing PH.D in microbiology these opportunities are as follows
Health Care

Microbiology PhD holders can become Clinical Microbiologist and run a Clinical Microbiology Lab.
Legal

As a lot of biotechnology uses microbes (and getting a PhD in Microbiology generally makes you biology literate),
A lot of demand for people with these skills to go into fields like Patent law and Technology transfer.

Government

Microbiology does matter to the military and public health. the research context, many scientists choose to go into administrative roles, such as grant management .
a post doctoral research with good fellowship and contingency grants offered by funding agencies like UGC, CSIR, ICMR, DST, DBT, etc.

Industry

Pharmaceutical, biotechnological, dairy , microbiologists are employed for do research, quality control, produce development as well as manage facilities.

Teaching
Microbiology gives you a solid foundation to teach biology,

Publishing

With the expansion of scientific publishing, a couple jobs have opened up for journalists with a strong background in science.
Salary
$76,530 average annual wage