Fix PWA Data Sync Bugs

I'm looking for an experienced developer to help resolve some functionality bugs in my Progressive Web App (PWA), specifically around data synchronization.

Key Tasks:
- Identify and fix data synchronization issues
- Ensure smooth operation in offline mode
- Validate and test push notifications functionality

Ideal Skills:
- Strong experience with PWAs
- Expertise in data synchronization
- Proficient in debugging and testing

Please provide examples of similar work done. Looking forward to your bids!