Interior and spatial designers, exhibition designers, production designers, theatre/TV/film and visual merchandisers are just a few of the careers directly related to your degree. Any business that produces areas for people to live, shop, or work is a potential employer for interior designers. This includes companies that provide a wide range of design services to retailers, such as architectural firms and construction companies, interior design firms, visual merchandising departments, exhibition centers, and film/TV/theater production companies.
You might work for an internal company or a consultancy that offers services to a variety of external clients. Freelance work is fairly common, but there are also permanent, full-time jobs.