Cross-Platform Raster Drawing Editor

I'm looking for a skilled developer to create a raster-based drawing editor compatible with Windows and macOS. The application should include:

Layer Management: Organize artwork with multiple layers.
Brush Customization: Create and modify brushes.
Text Tools: Add and edit text within the artwork.

Ideal skills and experience:
- Proficiency in graphics programming.
- Experience with raster graphics software development.
- Familiarity with cross-platform application development.
- Strong UI/UX design skills.

Please provide examples of similar work.