Budget Management System

The problem

Manual, spreadsheet-driven budget approval and MRN workflows were slow and error-prone across the organization.

What I built

A large-scale Angular/NestJS application covering budget planning, multi-level approvals, and live SAP Business One integration for expenses, allocations, and MRNs.

Architecture overview

• NestJS REST APIs bridge the app to SAP Business One's Service Layer for real-time ERP data
• Reusable Angular modules and drill-down dashboards handle expenses, budget allocation, and MRN management
• Multi-level business-rule validation enforced on both the API and UI layers