Hi, Glad to apply to your job.
I have gone through your job description in depth, and now I am sure that I can develop what you want exactly to your expectations, OR more.
I am knowledgeable about Wordpress in depth, meaning I can not only customize the wordpress themes, but also can create a wordpress theme totally from scratch out of design you give me. If theme is given, I can handle any kinds of customizations using plugins that I develop and attach the the template.
Responsiveness of the website can be guaranteed with my skills in up-to-dated css technology and other 3rd-party libraries like Twitter-bootstrap/jQuery/AngularJS.
As an Ethical Hacker, I always include Security breach scenarios in QA testing(i.e. SQL Injection) so that no black-hat guy could make compromise on your website.
Deadline will be definitely met, updates will be swift, communication will be more than smooth, not to mention the Topmost quality that I guarantee.
I will look forward to hearing from you.
Regards.