I've been developing websites and web applications (large and small, simple and complex) for more than twenty years. Clients have included small businesses, large corporations, and universities. I use and develop for WordPress on a daily basis, and have built or contributed to more WordPress websites than I can count. I have expert level skills in HTML, Javascript, (including jQuery and Ajax), JSON, CSS, PHP, Perl, MySQL, WordPress and much more. I have debugged and modified WordPress themes and plugins, created custom plugins, including some that integrated with other plugins (like Woocommerce) and was even asked by Automattic (the makers of WordPress) to debug and modify one of their own plugins. I have superior professional skills in WordPress theme and plugin customisation, and I regularly create custom plugins from scratch. I have developed countless custom plugins for clients, from small and simple to extremely large and complex, including full-blown web applications built on WordPress. Web applications I've built (sample only): - Cloud-based collaborative project management and reporting system for a major manufacturer - Health provider registration database with search-by-location - Freelance workforce job board (very much like Guru, Upwork or AirTasker) - Buy, sell and trade marketplace - Custom CMS for a major university