David Kryzaniak is a programming ninja at Blue Door Consulting in Oshkosh, Wisconsin. He holds a BS in Information Science from UW Green Bay; while he's primarily a PHP developer, he tends to do a lot of frontend (CSS, jQuery, responsive web design) work too. He enjoys playing with electronics, hacking into things he shouldn't, and doing a little (ok… a lot of) WordPress development. His super-awesome-way-cool-can't-miss-it blog is http://dave.kz.
Mario Peshev is a WordPress engineer and open source consultant. He is the lead tech guy at DevriX, a small consulting agency focusing on WordPress development and architecture, consulting and migrating businesses to open source platforms.
Mario has been working in the IT field for the past 13 years. He is certified in Java programming and Secure Web engineering and experienced in Java, PHP, Python, and JavaScript development. He is also a part-time trainer with 7 years of training experience and has taught dozens of technical classes in technical schools and universities and organizations and companies such as Saudi Aramco, The European Organization for Nuclear Research (CERN), VMware, Software AG, and Melexis Microelectronic Systems. His passion for open source is contagious.