DHL Gateway Integration with Laravel and React js and React Native

I need a skilled developer to integrate the DHL shipment gateway into my existing application. The integration should work with Laravel and React Native, and it must support real-time tracking and label generation.

Key Requirements:
- Integrate DHL shipment gateway with Laravel backend.
- Implement real-time tracking and label generation features.
- Integrate with React Native frontend.
- Migrate existing shipment data to the new system.

Ideal Skills & Experience:
- Strong experience with Laravel and React Native.
- Familiarity with DHL shipment gateway APIs.
- Experience in data migration.
- Ability to deliver clean, maintainable code.

Please provide examples of similar work and an estimated timeline.