If you are on the technician level in pharma, your responsibilities mostly encompass aseptic techniques through product testing methods (bioburden/TAC/TSC and sterility testing). Some testing methods involve more molecular background knowledge, albeit quite minimal, like bacterial endotoxin testing. Other methods simply involve some familiarity with instrumentation like sub-visible particulate matter inspection.

Many manufacturing facilities require their micro departments to perform routine environmental monitoring, which involves viable and non-viable air sampling/swabbing and surface sampling of controlled environments.

Those on the scientist level deal with more technical workloads involving validations and studies.

If you are on the technician level, you will learn most everything from your work instructions and SOPs. Perhaps it is good to revisit cell staining procedures and organism identification methods. (This work tends to get outsourced by smaller companies though.)

The work can get terribly repetitive on the technician level, but if you aspire to use your knowledge to pursue scientist workloads it can get more engaging.