invention that needs a working product

I am looking to create an invention that requires a working product, composed of both physical and software elements. I have images prepared but do not yet have 3D models. I need to create a minimum of two prototypes, and up to five. I am looking to hire a freelancer to develop these models and prototypes for me. As this is a unique project, I will need someone with the necessary technical expertise to prototyping physical and software products, and to help bring my invention prototype to life. This should be a collaborative process between myself and the freelancer—someone who is willing to work closely with me, and provide advice and recommendations on the best methods to use to create my invention. The freelancer should also be able to adjust their approach as further developments in my project are made. This is an incredibly exciting project, and I look forward to finding a talented freelancer who can help me move it forward.