- Architecture, desing and implementation of multiered web-based applications using J2EE ( jsf, facelets, Ajax, EJB, cdi, jpa/hibernate, mybatis, spring)
- reporting: jaspert report, pentaho
- EAI: custom built ETL tool, pentaho Kettle, apache camel, Talend
- ESB: apache cxf, servicemix
- RDBMS: oracle, MySQL, PostgreSQL