Casino App Development for Slots

I'm looking for an experienced development team to create a casino app for both iOS and Android platforms. The app will feature slots games with exciting bonus rounds.

Key Requirements:
- Develop a slots game with bonus rounds
- Ensure compatibility on both iOS and Android
- Create an engaging and user-friendly interface
- Implement secure payment processing and user authentication
- Incorporate high-quality graphics and animations

Ideal Skills and Experience:
- Proven experience in mobile game development, specifically casino games
- Strong portfolio showcasing similar projects
- Expertise in both iOS and Android platforms
- Knowledge of UI/UX design principles
- Familiarity with secure payment integration

Please provide samples of previous work and a detailed proposal. Looking forward to your bids!