Cross-Platform Project Management Desktop App or web application

I'm in need of a skilled developer to create a desktop application that can function on Windows, MacOS, and Linux operating systems. The primary role of this app will be to aid in project management, and it should include specific features such as task management, time tracking, and collaboration tools.

Key Requirements:
- Develop a desktop application that is compatible with Windows, MacOS, and Linux.
- The primary function of the app should be project management.
- Implement task management functionalities to help organize and prioritize tasks.
- Integrate time tracking features to monitor task completion and work efficiency.
- Include collaboration tools that allow for seamless communication and teamwork on projects.

Ideal Skills:
- Proficiency in cross-platform desktop application development.
- Previous experience in creating project management tools.
- Knowledge of task management and time tracking systems.
- Ability to design and implement effective collaboration tools.

If you have the relevant experience and skills to create this application, I'd like to hear from you.