Backend Developer

Our environment includes an existing production POS, voucher, telecom recharge and payment system. The developer must be capable of understanding and maintaining the existing legacy system while also developing newer backend integrations. Core Environment C# .NET Framework / ASP.NET Microsoft SQL Server T-SQL IIS / Windows Server REST APIs, HTTP and JSON Legacy ASMX Web Services SOAP, XML and WSDL Third-party API integrations Visual Studio Git Postman / SoapUI POS and voucher/recharge transaction systems The existing architecture includes flows such as: POS → .NET Backend/API → SQL Server → Telecom/Payment Provider API → Response → Database/POS The developer may need to understand old C# projects, troubleshoot production transactions, work with SQL databases and stored procedures, maintain existing SOAP integrations, and implement new REST APIs.