Desktop Parcel Management & Ticketing Software with WhatsApp Integration (Internal Business Use)

I am looking for an experienced software developer to build a desktop application for my parcel business. This software is only for internal use by employees, not for customers. The main goal is to simplify parcel booking, tracking, customer communication, and parcel delivery verification... (Budget: ₹1500 - ₹12500 INR, Jobs: API Integration, C# Programming, Database Management, Desktop Application, JavaScript, Payment Processing, PHP, Project Management, Software Architecture, Software Development)