Hello.
I have read your job description and am very interested in your project.
I have worked on many projects developing UI/UX, responsive design for web & mobile and I have expert-level experience of HTML, CSS, JavaScript.
Feel free to contact me and discuss about your project in detail.
HTML5/CSS3 + LESS/SASS/SCSS - responsive design (Bootstrap, GridLayout, Zurb)
Kind regards
~ From Wang YuKai