App needed to source referees for various sports

I'm seeking an app developer to create an innovative iOS and Android application revolutionising the way referees, umpires, and officials are connected across diverse sports. This app aims to serve as a seamless platform facilitating the discovery and engagement of qualified officials for sporting events while integrating payment capabilities upon selecting a referee. Key Features: - Effortless discovery and connection between sports organisers and referees across various sports disciplines. - Robust messaging and chat functionalities designed for efficient communication between event organisers and officials. - Secure user authentication and registration processes, ensuring a trustworthy community of referees and umpires. - Seamless payment integration enabling organisers to remunerate selected officials directly through the app upon their selection for an event. Desired Skills and Experience: - Proven expertise in crafting iOS and Android applications, including dual-platform app development. - Proficiency in integrating secure user authentication and registration systems to maintain the integrity of the referee community. - Strong comprehension of messaging and chat features, fostering smooth communication between sports event organisers and officials. - Previous involvement in developing platforms with payment capabilities would be highly advantageous.