About I did web development (php, java, perl) for various companies since 1997. I am also experienced in architectural and development planning.
Used mysql, postgresql, nginx, apache, varnish, mvc frameworks (zend, symfony, some custom ones), nosql engines (redis, cassandra).
Then I became a leader of 10 engineers, and after 2 years as team leader I was promoted to Core Systems Manager. In this new position I am the manager of 3 engineering teams, covering the core technologies of Ustream.tv