I need a cloud-based Payment collection app that lets my staff and customers settle invoices through UPI AND CASH while also giving us the option to record UPI, Cash, Cheque receipts in one place. Think of it as a lightweight, multi-tenant service we can log into from any browser or phone, issue a payment link or on-screen QR, mark physical cash or cheque as “received”, and instantly see it reflected in a consolidated dashboard. Core flow • A customer or field agent chooses UPI, Cash, or Cheque. • For UPI we present a dynamic QR or intent link and verify the callback. • Cash and cheque entries let the user capture amount, payer, reference photo, and status (for cheques: pending, cleared, bounced). • Every transaction updates real-time reports, sends optional email/SMS alerts, and can be exported to CSV. Tech expectations Multi-tenant architecture (one codebase, segregated data), role-based access, responsive UI, REST/GraphQL API for future mobile apps, and secure authentication (OAuth or JWT). I’m flexible on stack—Node.js, Django, Laravel, or similar—but please outline why your choice suits a SaaS model and how you will handle scaling. Deliverables 1. Source code in a private repo with clear setup docs. 2. Deployed instance (AWS, GCP, or Heroku) with CI/CD pipeline. 3. Admin guide covering user onboarding, plan management, and backup strategy. 4. One-month post-launch bug-fix support. Acceptance criteria • A test tenant can collect payments via UPI, Cash, Cheque end-to-end. • Transaction list refreshes without page reload. • Role permissions prevent cross-tenant data leaks in an automated penetration test. • All key actions are logged for audit and export correctly. If this lines up with your expertise, let’s talk timeline and milestones.