XinrInvoice.
A comprehensive digital ecosystem and automation platform designed specifically for freelancers and contractors to manage invoicing, client portals, and WhatsApp notifications.
The Challenge
Freelancers and contractors constantly struggle with disjointed tooling. Generating invoices involves creating PDFs in Word or specialized software, emailing them to clients, manually tracking payment statuses on spreadsheets, and following up via WhatsApp or SMS when payments are late.
The goal was to build a unified SaaS platform that brought all these workflows into a single ecosystem, removing manual intervention through automation.
The Solution
We engineered XinrInvoice, a fully automated financial CRM that allows contractors to generate dynamic invoices, track their status, and provide clients with secure portals to view and pay their outstanding balances.
Automated PDF Generation
Server-side rendering of invoice templates directly to PDF buffers for immediate download or attachment.
WhatsApp API Integration
Directly sending payment reminders, invoice links, and receipts to client WhatsApp numbers automatically.
Client Portals
Magic-link authenticated portals for clients to securely view their invoice history without passwords.
Recurring Billing
Cron-driven background jobs that generate and dispatch invoices on customized schedules.
System Architecture
To ensure high availability and sub-second invoice generation times, we built the platform on a modern serverless stack.