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
In a company specializing on such a narrow niche as quantum computing still is, in 2021, with your background you could be a worthwhile employee in all these aspects - fully depending on your own character and interests.
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 employees, 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.