Here is a list of companies working on quantum computing. As this kind of company is a subclass of general IT companies, you will find all the regular roles of commercial IT:
- Evangelists, Sales
- Researchers
- Teachers (i.e. in an "academy" style function within the company, giving talks or courses of a few days each)
- Consultants
- Developers, Implementators
- Operations, Maintenance
- Management
As of 2021, quantum computing is still quite niche, in commercial terms. With your background you could be a worthwhile employee in all these aspects - fully depending on your own character and interests.
Also, as these companies probably are often small and enthusiastic startups, every person will probably work in more than one role at the same time, which can be great or not so great, depending on what you prefer.
If I were in your shoes, I'd send my resume, together with a clear message of what kind of work you want to do, and go job hunting. Treat it like an information retrieval operation; talk with possible employers, and ask them what kind of jobs they offer currently (or check the job offerings listed on their web sites, of course).
This will give you a very quick insight into what the market offers.