PHP/ MySQL developer for functionality extension in existing application

Require a developer to extend functionality in image management application. This system has been developed in PHP/ MySQL. The image management application is part of larger system (analysis of dermatology images using AI techniques) being developed. This module allows users to classify images into diseases and maintenance thereof.

The system is already built and now requires modifications according to well documented requirements. Need someone to work on implementing the changes. Selected candidate will need to share his/ her estimate and duration for completion prior to start of work. Existing application details and functional requirements document will be shared with the shortlisted candidates.

Kindly reply with
- number of hours you will be able to work in a week (20, 30, etc.)
- your hourly rate