Epicor .NET REST Integration Development

I need a lightweight .NET service that communicates with Epicor’s REST API and keeps our database and the ERP in lock-step. The core requirement is real-time data synchronization—changes made in either system should be reflected in the other within seconds, without manual intervention or batch jobs... (Budget: $750 - $1500 USD, Jobs: .NET, .NET Core, API Development, Backend Development, C# Programming, ChatGPT AI Integration, Microsoft Graph, Microsoft SQL Server, PHP, REST API)