I understand that you are looking for a developer who has complete knowledge of XMPP web client called Xabber. I believe I am the perfect fit for this project. With over 12 years of web development experience, including HTML, CSS, PHP and JavaScript, as well as Wordpress; I am confident that I can deliver a successful result for you. My extensive experience in these technologies make me well-equipped to deliver a successful project. Additionally, my commitment to customer satisfaction ensures that your requirements are met in an efficient manner.
I am available to discuss further if needed. Please feel free to contact me directly if you have any other questions or would like more information about my services.