Alessandro C.

Hello, I understand you're looking for a clean, headless service to connect your system to WhatsApp using **.NET** and some **JavaScript**. I have extensive experience building scalable backend solutions that precisely match your project requirements. My goal is to create a robust service that automatically sends outbound messages, receives and parses incoming messages, and persists all traffic to a database. My approach is to use a **.NET 6/7** worker for the core service, leveraging **C#** and **Dependency Injection** to build a clean and highly maintainable architecture. My background includes centralizing common logic into a core hub architecture, which significantly reduces development time for new services—a perfect fit for this project. I have extensive experience managing and optimizing **MS SQL Server** databases for high performance and availability. I'm also familiar with **PostgreSQL** for resilient and distributed architectures, and I can use the official WhatsApp Business Cloud API to ensure the solution is stable and compliant. The final deliverables will include: * Full source code with a clear folder structure and comments. * Database schema or migrations. * A `README` file with all the necessary documentation. * A **Postman collection** to demonstrate the end-to-end functionality of the automated send and receive flows. I am confident in my ability to architect the solution to allow for multi-account support in the future without a full rewrite. Are there any specific libraries or hosting preferences you'd like to discuss before we proceed?