I am looking to build a custom SaaS web application that works smoothly on desktop and Android devices (mobile browsers). The website gsmgenesis.com is only a functional reference for user flow and features. Design, code, branding, and content must be completely original. This is NOT a clone. The system must be built in a flexible and modular way, so that in the future I can change the business model (for example, shifting from Android services to selling digital products or gift cards) without rebuilding the platform from scratch. ⸻ PLATFORM REQUIREMENTS • Fully functional on desktop browsers • Fully responsive and optimized for Android mobile browsers • Clean UI/UX suitable for future mobile app integration • Scalable architecture (No native Android app required at this stage.) ⸻ CORE FEATURES User System • User registration and login • Email verification and password reset • User dashboard • Order history and status tracking Wallet / Credits • User wallet / balance system • Credit deduction per order • Refund logic for failed orders • Full transaction history and logs Services & Orders • Service listing with pricing rules • Order/request submission • Order status management (pending, processing, completed, failed) API-Based Automation • Integration with third-party service APIs • Secure API key storage • Automated request handling • Webhooks or polling for updates • Error handling and retry logic • Logging of all API requests and responses Admin Panel • Manage users and balances • Manage services and pricing • Manage orders • API configuration • Logs, reports, and manual overrides ⸻ FUTURE FLEXIBILITY (VERY IMPORTANT) The platform must be designed so that: • Services can be replaced with digital products or gift cards • Wallet system can be reused for new business models • Pages, categories, and logic can be extended without major rewrite This flexibility is a key requirement. ⸻ SECURITY & PERFORMANCE • Secure authentication (JWT or equivalent) • Encrypted sensitive data • Rate limiting and abuse prevention • Audit logs • Scalable and maintainable codebase ⸻ TECHNOLOGY PREFERENCE • Backend: Node.js (NestJS) or Laravel • Frontend: React / Next.js • Database: PostgreSQL or MySQL • Queue/Workers: Redis or equivalent • Hosting: VPS (AWS / DigitalOcean / Hetzner) • HTTPS, backups, and deployment support ⸻ DELIVERABLES • Fully working SaaS web application • Original source code (no reused or leaked scripts) • Admin access and documentation • Deployment assistance • 30 days post-delivery support