Dear Hiring Manger,
Hello, My name is Smile, I have a 5+ working experience in WordPress Theme development and have developed number of Responsive WordPress Themes in my career from scratch from PSD to WORDPRESS or Creating mockup of the website like redesigning a website and then creating theme, so I have good eye over design ( Like designer and developer combo ).
I have been using foundation and bootstrap framework for Making Responsive HTML and then using that HTML to make you the word press theme with fully backend theme option, I have the knowledge of post types, custom fields, plug-in modification etc.