Create Document Editing App office suite

I need a skilled developer to create a cross-platform app for iOS and Android, similar to the Office Suite app. The app should include:

See link for all details functionality:
https://apps.apple.com/us/app/office-suite-word-sheet-pdf/id6744342129


Core Functionalities:
- Document editing (supporting DOCX, XLSX, PPTX, and PDF)
- File sharing
- PDF conversion
- PDF signing
- Document scanning

Ideal skills and experience:
- Proficiency in app development for both iOS and Android
- Experience with document editing functionalities
- Familiarity with PDF handling and file sharing capabilities
- Strong understanding of user interface and experience design

Please do not respond if you cannot work within my specified budget. I target the job .