Ground floor can be entry-level R&D technicians, quality, or production.

Starting with a bachelors degree, career progression typically goes something like: technician, associate scientist/scientist I, senior associate scientist/scientist II, principal associate scientist/scientist III, senior scientist, principal scientist, and research fellow/scientist emeritus, or some variation of that based on the specifics of the company.

Also, supply chain/logistics is a valuable skill set in biotech. You might consider keeping an eye out at the same companies I mentioned, as your skill set would likely translate quite well.