Social Media App Reskin and Integration

I need an experienced developer to install and reskin the Wowonder social media app under my name.

Requirements:
- Integrate payment gateway (e.g., PayPal, Stripe, Square)
- Complete reskinning per my branding guidelines (color schemes, logos, etc.)
- Implement additional functionalities:
- Push notifications
- In-app messaging
- Third-party integrations

Ideal skills and experience:
- Proficient in app development and reskinning
- Experience with API and payment gateway integration
- Strong understanding of social media app functionalities
- Good design skills for branding alignment

Please provide examples of similar work and an estimated timeline.