Cross-Platform Mobile App Development

I am looking for a skilled mobile app developer to create a cross-platform application (Android and iOS) for my existing website, which is built with Laravel SaaS files hosted on my server. The app should seamlessly integrate with my Laravel backend, bringing the website's core functionalities to mobile users.

Requirements:

Experience in developing Android and iOS applications
Proficiency in integrating mobile apps with Laravel or other PHP-based backends
Familiarity with mobile-friendly UI/UX design principles
Ability to implement push notifications, user authentication, and responsive design elements
Knowledge of data security and app performance optimization
Experience with SaaS platforms is a plus

Responsibilities:

Design, develop, and test a cross-platform mobile app that integrates with my Laravel SaaS website
Ensure app functionality aligns with website features, delivering a consistent user experience
Work with me to handle any backend adjustments needed for mobile functionality
Provide clear documentation and ongoing support for any post-launch updates or bug fixes

Additional Information: 

Please provide examples of previous work, especially projects involving Laravel-based applications or SaaS platforms.