Worked in MNCs for 2+ years to design and develop applications (mainly web based- Java). Key skills below:
Web servers and application server setup
Web security configuration
Databases MySQL, PostGres, SQLServer, Oracle, Derby, DB2 etc.,
Java open source frameworks (Spring, JSF Hibernate-JPA)
PHP programming (freelancing)
NoSQL database programming (CouchDB/MongoDB)
These are few skills which I have worked on and enjoy working on in future.