Dear Sir or Madam,
As an experienced developer, I am confidant that I am a right choice for this job. I have many years of web application development experience and excellent understanding of OO programming paradigm, software design and modern trends in application development and best practices.
Beside deep understanding of PHP, HTML, CSS and JavaScript, I know how to write clean, modular and well documented code, how to choose best design pattern and algorithm to solve a problem and to present that to other developers and clients.
As for the skills you requested - I have experience with most of the popular PHP frameworks such as Symfony, Laravel, CakePHP or CodeIgniter and with popular CMS solutions. I am familiar with new technologies and solutions included in PHP 5.5, HTML5 and CSS3 (and preprocessors like sass and less). Also I worked with many APIs, using REST or SOAP, and I worked on a development of a few APIs myself and I am familiar with standards they need to satisfy. I worked for a SEO company and I have very good understanding how to analyze and optimize a site for it.
If you have any questions for me, feel free to ask anytime.
Regards,
Jan