Take the job. Worst case scenario is that Pfizer buys us and then lays us off based upon the acquisition agreement. Anti-Infectives are a highly challenging and clinically challenging disease state. You will grow from the knowledge and have a respectful disease state on your resume. No one knows what Pfizer would do with our team upon acquisition however, if you can prove yourself in this area of knowledge it will elevate your resume.
Fact is, some managers are good (RRT in Florida ) And some suck (Brian Quinn).
Either way, you will Grow which is rare in our industry. Good Luck