Hibernate - (through Java) contractor will need to optimize existing hibernate code as well as add new code, so s/he should have an advanced understanding of how Hibernate works and how it can be optimized.
Spring - product is written using Spring framework. Contractor will at least need to be able to follow Spring code and will need to follow existing patterns when adding to the code base.
Swing - Swing is used for GUI and new screens will be added to the application
Grom - 8 months ago