Java Developer for REST API Interaction

I need a seasoned Java developer, familiar with JDK7, for the purpose of creating a program that effectively calls a JSON-based REST API with the goal of simple data retrieval. This project demands experience in:

- Web and app development in Java
- REST API interactions, particularly JSON-based APIs
- Simple data retrieval from APIs

The ideal candidate will have a proven track record in similar projects. Being well-versed in Android and desktop application development will be considered an advantage. The ability to work effectively and deliver on time is a must for this project.