Wordpress developer needed for online marketplace web app

Looking for a web developer to help us a build an online marketplace. It's forecasted as an initial 6-8 week project with scope for further work later. Ideally, you will be looking for a long-term partnership.

The site is to be built in Wordpress utilising the applications available but we are open to other solutions. UX and UI has already been commissioned and the selected candidate will be required to develop the product as per the designs. We are currently using Invision for collaboration on designs so if you have experience of that, that would be ideal.

Full brief/product requirements document available. Please be prepared to develop a proposal on how you would develop this product.

Finally, the selected candidate is required to document logic/methodology behind their code for future purposes.