Extend Java Spring Server CRUD REST API

We have a small tomcat app server on Amazon that written in Java and gradle which makes basic rest CRUD operation. The project is to extend this for further 15 simple CRUD Rest APIs with tests on them. The server is written in Java 8, Spring, JPA, Spring MVC, Integration tests. The code is very clean, we use GitHub pull request and the code is being reviewed. The code written in high level and no previous bugs. The code has tests for the public APIs. I'm looking for Java professional who could do this in 5 days. This project is at the very beginning and will continue for long period.