I'm looking for an experienced developer to create a comprehensive hotel management system. The system must include: - Room Booking System: Efficiently manage reservations and availability. - Billing and Invoicing: Streamlined financial transactions. - Staff Management: Oversee personnel and scheduling. It should be fully compatible across desktop, mobile, and web platforms. Ideal Skills and Experience: - Proven experience in developing management systems. - Strong background in UI/UX design for seamless user experience across devices. - Expertise in database management and security. Please provide a portfolio with relevant projects.