Java: 10+ years, Perl: 20+ years, PHP: 10+ years, Mysql: 7+ years, Postgresql: 5+ years Designed lots of websites for various companies in last 20 years. Designed back-end cluster for full-text search Worked on a project which involved usage of Lucene, Cassandra, Zookeeper. which can processing billions of realtime messages per day, with hundreds of servers work together. At spare time, I would like to find some small tasks at Guru.