Toronto-based Marco Tabini is the CEO of Blue Parabola, LLC, publisher of php|architect magazine and organizer of many PHP events. He has been a general PHP community malcontent for the last ten years, blogs regularly at The Accidental Businessman and can be found making all sorts of pointless trouble for himself on Twitter.

I'm Andrei Zmievski, a web developer and founding member of Analog, living and working in San Francisco. Along with my Analog colleagues, I work on things like Mapalong and Brooklyn Beta. Prior to forming Analog, I was the Open Source Fellow at Digg and a platform engineer at Yahoo.

For the past decade, I've been a core developer of PHP and member of the PHP Group, helping curate development of the world's most popular web platform. Along the way, I started the PHP-GTK and Smarty projects, co-wrote PHP Developer's Cookbook, and architected the upcoming Unicode and internationalization support in PHP.

I'm Andy Brockhurst, but everyone just calls me Bob.
I've been at the BBC for just over a year having previously spent nearly five years at Yahoo!. I've been working with PHP daily since around 2000.

At the BBC I'm a Principal Engineer in the Frameworks/Platforms team where we are responsible for Apache, PHP, Varnish and Zend Framework, Frameworks which extend ZF, some core libraries, the global BBC Header/Footer and some Java services thrown in for good measure.

I'm also a father, husband, hacker, maker, tinkerer, marksman, brewer and charity worker.

I'm addicted to anything to do with Space, Science, Tech and Robots.

In 2004, Brandon Savage discovered that he could automate things using PHP. His passion grew into a hobby, and that into a career, eventually landing him at Mozilla as a web developer on Socorro, Mozilla's crash reporting system. Brandon is passionate about technology and software development. Brandon is based in Olney, Maryland.

Davey Shafik has been working with PHP and the LAMP stack, as well as HTML, CSS, and JavaScript for over a decade. With several books, articles, and conference appearances under his belt, he enjoys teaching others any way he can. An avid photographer, he lives in sunny Florida with his wife and six cats.

Derick Rethans has contributed in a number of ways to the PHP project, including the Xdebug debugging tool, the mcrypt, date and input-filter extensions, bug fixes, additions and leading the QA team. He's a frequent lecturer at conferences, the author of php|architect's Guide to Date and Time Programming, and the co-author of PHP 5 Power Programming. Derick works as an independent contractor doing various PHP related jobs while focussing on internals and extensions. In his spare time he likes to travel, hike, ski and practise photography.

Harrie Verveer is a senior PHP developer at ibuildings. He has been working with PHP as a professional since 2004, helping ibuildings to become the company that it is today. He is one of the organizers of the Dutch PHP Conference and a regular speaker at conferences and user group events in Europe, where he shares his experience and knowledge gained from working with a wide variety of technologies. In his spare time Harrie enjoys playing guitar, playing tennis and writing reviews of gigs and CDs for the popular 3voor12 website

Ian is the development manager at Virgin Management in London, and has been working with PHP since 2002. He was formerly Delivery Manager for Ibuildings, where he worked with a variety of large enterprise clients across the UK and Europe. He is a regular conference speaker, and is interested in search, data processing, machine learning and natural language processing. Ian blogs about these topics and more on his site, PHP/ir.

I'm James Littlejohn, the lead developer on the LifestyleLinking.net open source project. This involves combining ideas, curiosity and plain hard slog in aggregating data so that it may reveal its collective intelligence. I've also learnt to write PHP code over the last 4 years while experimenting with data mining techniques.

Before that, my entrepreneurial activities have including starting a web software company in Edinburgh during the .com era and a local food e-commerce and home delivery service in Aberdeen, Scotland. I spent a few years in Mountain View, CA during the early web2.0 years where I began my conversion to become a software data engineer.

Jonathan Weiss is a consultant and partner at Peritor GmbH in Berlin, Germany. For the last years he has been developing and consulting on large Web projects where he focused on scalability and security. Nowadays he develops Scalarium, an EC2 Cluster Management solution and helps clients migrate to the Cloud. He is an active developer of several OpenSource libraries around CouchDB and Amazon Web Services and the author of Webistrano, a deployment tool.

Technical Director at Redwire Design. A technologist, developer and researcher with over a decade's exposure to web technologies covering a broad range of experience from RFC documentation detailing protocol specification to streamlined user interaction techniques together with a solid grounding in customer service and a history of working within different user markets.

Lorenzo has a M.Sc. degree in Software Engineering and has been working with PHP and other languages for over 10 years, helping large enterprise companies in Italy and the UK. He is a long time contributor to open source projects and a spare-time researcher in the machine learning / NLP fields. He's generally interested in databases, algorithms and data structures. He recently joined the DataSift team as Chief Technical Architect. You can read his articles on his personal site or on the Ibuilding's techPortal.

Michiel Rook is a ZCE and holds a Master's degree in Computer Science, and runs a PHP/Java contracting and consulting business in the Netherlands. He's been working with PHP for over ten years and is currently the lead developer of the Phing project. In his precious spare time he enjoys music, sports and movies.

I am Nikolay and I am long-time WordPress contributor. I spend my busy time working for Automattic – the company behind WordPress.com and other cool stuff. Although I am not a systems guy, I think more developers should be interested in servers and scaling – specialization is for insects.

I also teach at Sofia University, organize TEDxBG, and have a bear.