The challenge

A cooperative needed one system to replace scattered spreadsheets and manual tracking for products, stock, clients, suppliers, orders, and payments.

The solution

A custom ERP that centralizes operations: FIFO inventory with expiration tracking, order and billing workflows, client/supplier payment management, and accounting reports — all behind role-based access for different staff roles.

What I built

• Product catalog with categories and image management
• FIFO stock system with batch history and automated low-stock alerts
• Order management with status tracking and PDF delivery notes
• Invoicing (factures & proformas) with PDF generation
• Client and supplier payment modules
• Accounting dashboard and sales reports
• Product & client analytics with CSV/Excel export
• User management with 5 permission levels
• Automated email notifications and scheduled database backups

Impact

Unified daily operations (stock → order → invoice → payment) in a single secure platform, with automated alerts and backups to reduce manual work and data loss risk.

The challenge

Algerian freelancers and small businesses need legally compliant invoices (factures & proformas) with the right business identifiers (NIF, RC, ART, NIS, CCB), but most rely on manual Word/Excel templates with no verification, no tracking, and no protection against data loss.

The solution

A self-service invoicing platform where each user manages their own professional profile and documents: draft-to-invoice workflows, QR-code-verifiable PDF documents accessible via a public link, a metrics dashboard, and automated, worry-free backups — all built on Spring Security with email-based account recovery.

What I built

• Invoice & proforma generation with line items, VAT calculation, and DZD currency formatting
• Draft system to prepare documents before converting them into final invoices
• PDF rendering (OpenHTMLtoPDF) with a public, QR-code-verifiable link for each document (/verify/{uuid}) to prove authenticity
• Professional profile management with Algerian business fields (NIF, RC, ART, NIS, CCB, wilaya/commune)
• Dashboard with revenue cards, month-over-month trends, and custom date-range charts (Chart.js)
• Secure authentication with Spring Security, password reset via email, and CSRF-protected SPA-style endpoints
• Automated daily PostgreSQL backups (pg_dump) uploaded to Google Drive with email notifications, timezone-aware (Africa/Algiers)
• Algerian phone number validation and French-localized UI/formatting throughout

Impact

Replaced manual, error-prone invoicing with a single trustworthy platform — giving each professional legally structured, publicly verifiable invoices, real-time revenue visibility, and automated backups that remove the risk of losing financial records.