With a BS or MS in physics you can get a job as a technician or research assistant in a research lab (university lab, national lab, private research institute).
Technicians and research assistants in research labs run the equipment and carry out experiments under the instruction of the PI (whether professor or senior staff scientist), and may also work with grad students and postdocs.
However as a technician you will probably not have autonomy to design your own experiments as usually your job is to carry out someone else's ideas. You may be listed as co-author on publications, but probably not more than that. Then again it depends on the heirarchichal culture of the lab. Senior technicians or those with many years experience can be seen as experts and given more autonomy. If your boss thinks highly of you and is not too set in the job descriptions they may allow you more autonomy as you prove your capabilities and gain experience and knowledge.
You could also get a job as a technician in a tech company's R&D department. Companies usually have limits on publishing though, they tend to patent more than publish. Technicians may be included on patents depending on individual circumstances and company culture.
You can also work at a high-tech startup company. (but this depends on the field of physics you are interested in, there aren't a whole lot of startups doing high energy physics! but there are companies that make use of atomic physics, and many companies that do solid state physics). Small companies are usually a lot less heirarchichal and have more fluid job descriptions. For examples, I know of some small high tech companies that often apply for SBIR grants ("small business innovation in research" program) and where the PIs can be employees who have BS or MS degrees and many years of experience. (whereas in a university or national lab you do need a PhD to qualify for PI status on a grant proposal)
I should also add that if you work for a company in their R&D department, it will most likely be applied research as not many companies do basic research. If you are interested in basic research then your best bet is probably to get a staff job in an academic or national lab.