Convert a Template to a Website

Looking for an ongoing partnership to provide HTML/Bootstrap implementations of various UI's. Our application is done but we are needing to extend some UI's, add some new screens, and implement additional capabilities. We can provide detailed mockups via PDF (generated with Balsamiq) and basic documentation on needed UI's. Some scenarios will be done off a screenshot of existing application with documented modifications. Application is fairly data intensive so a number of inputs using (mostly) native HTML5 or Bootstrap elements. We are looking for someone to provide back all assets in HTML/Bootstrap/SASS (regular CSS may work and we can convert to SCSS files if necessary and if we find the right person at the right cost). All UI's will need to be as mobile friendly as possible via standard bootstrap elements. No (or very little) Javascript will be required as our team can efficiently hook interfaces up to our AngularJS framework and all necessary data API's. For purposes of providing UI's with data we are fine with UI designer just including hardcoded sample data as is provided in the mockups we provide to them. We would like to work on a page by page (or small group of pages) basis. We would be happy to answer any questions or provide more specifics as necessary.