Debugging build error/Write groovy test cases

I am looking for someone to help me debug a build error and write groovy unit test cases for my project. The programming language used is groovy. The ideal candidate should have experience in debugging build errors and writing unit tests in groovy. The project requires the following:

- Debugging of build error
- Writing of groovy unit test cases
- Experience with groovy programming language
- Experience with debugging build errors
- Experience with writing unit tests

If you have the skills and experience to help me with this project, please submit your proposal.