Mac Desktop App Development

I'm looking for an experienced developer to create a feature for a Mac desktop application.

Key Requirements:
- Proficiency in developing Mac OS applications
- Strong background in desktop application development
- Ability to work on new feature development

Ideal Skills and Experience:
- Experience with Swift or Objective-C
- Familiarity with Mac OS UI/UX design principles
- Proven track record in delivering high-quality desktop applications

Please provide samples of previous Mac desktop applications you have developed.