Windows Desktop Software Development & Software License Management

I am looking for an experienced software developer to build a private Windows desktop application that combines workflow automation with a secure software license management system. ## KEY REQUIREMENTS - Modern Windows desktop application with a user-friendly interface. - Secure license management, including 30-day validity, offline verification, activation, expiration handling, and device limits. - Backend API and database for user and license management. - Workflow automation with task monitoring, error handling, retries, and recovery. - Separate owner/admin controls and a simplified user interface. - Secure, modular, maintainable, and well-tested software. - Complete source code, documentation, and deployment instructions. # REQUIRED TECHNICAL SKILLS - **C# / .NET Desktop Development** or an appropriate alternative. - **WPF and MVVM Architecture** - **Software Architecture and Modular Design** - **REST API / Backend Development** - **Database Design and Integration** - **Software Licensing and License Validation** - **Authentication and Application Security** - **Workflow Automation and State Management** - **Asynchronous Programming and Concurrency** - **Error Handling, Retry Logic, and Recovery** - **Unit Testing and Integration Testing** - **Git and Source Code Management** # REQUIRED EXPERIENCE - Proven experience developing and delivering Windows desktop applications. - Practical experience implementing software licensing, activation, expiration, and offline license verification. - Experience building backend APIs and integrating databases. - Experience designing reliable automation workflows with session/task management. - Strong understanding of security, failure recovery, testing, and maintainable code. - Ability to evaluate technical requirements, identify risks, and justify architectural decisions. The final deliverables must include the working software, complete source code, documentation, and deployment instructions. This project is aimed at attracting experienced developers who can deliver a reliable solution within the agreed scope. Budget: USD 750–1500