Jaya Traders ERP System

Role

Full-stack engineer with domain workflow ownership across sales, stock, and logistics.

Business Problem

A multi-branch trading company was running operations on spreadsheets and disconnected tools. They needed real-time stock visibility across branches, automated inter-branch transfers, lot tracking for perishables, and a POS system that worked offline-capable with thermal printer support — all while generating Sinhala-language invoices.

Key Decisions

• Implemented lot-number tracking at the stock level to support FIFO for perishable goods, with automatic lot assignment during sales.
• Built a custom invoice template designer (drag-and-drop) so the business could create their own invoice layouts without developer involvement.
• Designed loading/unloading sheet workflows for logistics with route-based tracking and driver assignment.
• Used QuestPDF with Sinhala font support (NotoSansSinhala) for generating bilingual invoices and reports.

Architecture

• Built a Next.js dashboard with invoice template design and role-aware experiences across 20+ modules.
• Implemented .NET services for invoicing, purchase flow, stock transfer/adjustment, and lot tracking.
• Delivered logistics operations for loading/unloading sheets and route tracking with driver assignment.
• Built automated stock transfer jobs for inter-branch replenishment based on configurable thresholds.

Outcomes

• Improved end-to-end operational visibility across inventory, finance, and route activity.
• Enabled faster day-to-day billing with POS mode and thermal printer integration.
• Eliminated manual stock reconciliation through automated lot tracking and transfer workflows.

Measurable Impact

• 20+ operational modules covering the full trading workflow
• Multi-branch stock visibility with automated inter-branch transfers
• Bilingual invoice generation (English + Sinhala) with custom template designer
• 11 report types including profit/loss, stock valuation, and sales analytics