With a strong Linux background I have a diverse skill set but my forte is PHP programming. Initially I focused primarily on modules & themes for CMS/CRM systems such as Wordpress, Drupal, WHMCS, etc. However I have since switched my focus to working more with RESTful APIs & mobile site/application development.
Although design is not a great strength of mine, I do pride myself on my markup & CSS abilities. Everything I do is 100% valid by latest markup standards, cross-browser supported & guaranteed to pass any validation tests. This is important when you not only have a wide range of visitors, but also when seeking high SEO rankings & overall professionalism.