Technical writer for Product Documentation

I am looking for a technical writer with docbook skills to write documentation for our company's product. It is an IT company developing a software product. I have already put together a docbook based documentation, but it is far from professional. I need a professional technical writer to take it to the next step. We are based in the U.S., but open to freelance writers who can work from home, from anywhere in the world. We are releasing our product very soon and we would like to get started on the documentation as soon as possible. Also, we have other solutions we are offering which will also require documentation. So if we are satisfied with the quality of work, there will be more projects on the way. Documentation already exists and it contains around 6000 words. We are looking for a professional touch. Work has to be completed in 3 days.