Develop a Comprehensive Web and Mobile Invoice Generation Application

We are seeking an experienced web and mobile application developer to create a robust system for generating invoices. The application must be capable of processing various source documents, including purchase orders, quotes, and commitment vouchers, to automatically create accurate invoices. Key functionalities will include:  Efficient data input and management for all document types.  Automated invoice generation based on predefined templates and rules.  A user-friendly interface accessible via both web browsers and mobile devices (Android and iOS).  Secure storage and retrieval of all generated invoices and source documents.  Reporting features to track invoice status and financial summaries.  The ideal freelancer will have a strong portfolio in full-stack development, with expertise in building business applications that prioritize data accuracy and user experience. We are looking for a solution that streamlines our billing process and reduces manual effort.