Sergei Golubchik started modifying MySQL source code in 1998, and has continued as a MySQL AB employee since 2000. Working professionally with MySQL sources, he has had the opportunity to get to know and extend almost every part of the server code-from the SQL core to the utility functions. He was one of the primary architects of the Plugin API. After working for ten years in the ever-growing MySQL AB, and later in Sun Microsystems as a Principal Software Developer, he resigned to join a small startup company that works on a MariaDB-an extended version of the MySQL server, where he continues to do what he likes most-hack on MySQL, architecting, and developing MySQL/MariaDB Plugin API, making it even more powerful, safe, and easy to use.
He works and lives in Germany, near Cologne, with his lovely wife and two kids.
Andrew Hutchings is currently one of the top MySQL Support Engineers working at Oracle. He came from failing Computer Science at A-Level (British exams for 17-18 year olds) to working on, pretty much, every field of computing. His first development job was as an 8-bit assembly firmware developer for an environment monitoring company. He then went on to become a senior PHP and C/ C++ developer as well as a DBA and system administrator for a large UK magazine chain. From there he was snapped up by Sun Microsystems as a MySQL Support Engineer specializing in MySQL Cluster and C/C++ APIs, much of this work involving deep analysis of the MySQL source code. Sun has since been bought by Oracle and Andrew is continuing his role there and was a tutorial speaker at the 2010 O'Reilly MySQL Conference & Expo. In his spare time Andrew is an active community developer of MySQL, MySQL Cluster, Drizzle, and MySQL Data Dumper (mydumper for short) as well as other small, related projects.