Pascal Charest is a cutting-edge technology professional working with a very wide array of open source technologies.
He is currently leading system administrators in strategic planning of networked infrastructures and is often consulted for system architecture design. He can be reached via his LinkedIn profile at http://www.linkedin.com/in/pascalcharest.
Bahman Movaqar has been developing, deploying, and delivering software for the past 14 years, ranging from embedded operating systems to ERP implementations. He's an open source believer and a passionate amateur chess player. He blogs at http://bahmanm.com/.
Ângelo Marcos Rigo has a strong background in web development since 1998, focusing on content management systems. For the past 7 years, he has been managing, customizing, and developing extensions for Moodle LMS. He can be reached at his website http://www.u4w.com.br/novosite/index.php for CMS or Moodle LMS consulting. He has reviewed Moodle Security, Packt Publishing.
Hans-Jürgen Schönig has been involved in professional PostgreSQL training, consulting, and support for more than 15 years now. He and his company Cybertec Schönig & Schönig GmbH (http://www.cybertec.at/) are serving clients around the globe and have worked on some of the world's largest PostgreSQL deployments.
Stéphane Wirtel is an enthusiast software craftsman who is interested in high availability, replication, and distributed systems. Since 2000, he has been using PostgreSQL with the Python programming language. Stephane gives talks on Python and PostgreSQL in several conferences in Europe. The last one was called Python & PostgreSQL, a Wonderful Wedding. He is also a former core developer of the Odoo project, having worked on it for 6 years.
Stéphane is also a member of the Python Software Foundation and the EuroPython Society. He promotes the Python programming language via the PythonFOSDEM event at Brussels. You can reach him at http://wirtel.be/ or via Twitter @matrixise.
He works for Mgx.IO, a company that specializes in Python and Erlang developments. You can reach this company at http://mgx.io/ or via Twitter @mgxio. He has also reviewed the books Getting Started with PhantomJS and PhantomJS Cookbook, both by Packt Publishing.