I need a fully-functional SMS gateway module that I will own outright, ready to plug into my website, mobile app, and our internal CRM/ERP. The gateway must expose clean REST (and, if feasible, SMPP) endpoints, handle inbound and outbound traffic reliably, and surface delivery reports in real time. Multi-level user roles are essential: super-admin for global configuration, reseller/admin tiers for quota management, and end users with restricted dashboards. A web-based control panel where I can create, edit, deactivate, and audit these roles is part of the scope. Key expectations • Source code and build instructions delivered so I can self-host without vendor lock-in • Clear API documentation that my dev team can drop into each platform quickly • Secure token-based authentication and rate-limiting baked in • SEND & Receive & Track Delivery Status for SMS. • SMS Can be Send via Using my Own SIM • Web Portal page to view all SMS and analysis • SMS can be sent using Short URL which can me click & view detailed SMS Content • SMS can be sent using Short URL which can me click & view detailed SMS Content • Incoming SMS Realtime Notification Enabled • we have Website Which required send SMS to our customer time to time. this SMS Gateway is required to reduce our SMS Cost. we do not want to use any third-party SMS API so, developer need to APi that can work on our web server. • Logs and reporting endpoints for message status, failures, and costs Acceptance will be based on: 1. Successful test sends and receives from all three of my platforms (Mobiles, Website, Backend Code) 2. Role segregation verified through a short demo session 3. Code review showing no hard-coded credentials and passable static-analysis checks 4. Code must be clean & Professional & well documented guide. I have Android Device if you want to Setup as GATEWAY SERVER & I have UK SIM with SMS Service. If you have existing framework components that speed things up, great—just make sure licensing allows full transfer of ownership.