LAN Ethernet, WAN,IP routing, deployment & configuration of routers and firewalls
Interconnecting remote networks: VPN, cryptography, Monitoring systems (SNMP, Alarms etc.)
Opensource Intrusion Detection/Protections Systems (Snort IDS)
Database design and configuration
MS SQLServer, Oracle, PostgreSQL, EnterpriseDB, MySQL, Sybase ASE
Java JDBC, Connection pooling, ORM (JBoss Hibernate and JPA)
Design and deployment of networked backup solutions
NoSQL distributed databases (document oriented): MongoDB, Couchbase.
Optimization of RDBMS performance through Level 1 and Level 2 distributed entities/queries caches (Terracotta clustered EHCache/Big Memory)
Performance and scalability oriented J2EE Architecture
J2EE Application Servers (JBoss and Oracle GlassFish) , JBoss middlewares, Sun Mojarra JSF , JBoss Hibernate, JBoss SEAM web application framework, JBoss Richfaces Ajax framework
Full J2EE 6 stack + Seam 3 (CDI,JPA 2.0,JSF 2.0 ajax etc.)
Unit testing for integration tests.
Adobe Flex 3/4 SDK (Flex based RIA developments with J2EE backend)
Agile method of development and continuous integration