Yes! Some people specialize in writing business proposals and grants. With years of drafting plans for businesses, many people venture out on their own as freelancers to provide their services to those who need them. You don’t need the many years of practice to start. What you need is to get on your PC and search for business proposal and grant writing courses on platforms such as Lynda and Coursera. Most Grant writers get their payments as a percentage of the grant if it is accepted.