Java Full Stack Engineer to update our SpringBoot Backend

I am looking for a Java Full Stack Engineer to update our SpringBoot Backend. The ideal candidate should have experience with the following:

Specific Features:
- I have a detailed list of specific features that need to be added or modified

Technologies and Frameworks:
- Please stick to the current technologies and frameworks that are already in place

Timeline:
- This project is expected to be long-term, lasting more than 1 month

If you are a Java Full Stack Engineer with experience in updating SpringBoot backends and are available for a long-term project, please submit your proposal.