Generic ERPs like SAP or Odoo are often oversized for SMEs. They impose rigid processes, expensive licenses, and unnecessary complexity. Here's why and how to build a custom ERP with modern technologies, tailored exactly to your needs.
Why a custom ERP?
A custom ERP costs less in the long run than a SAP license, adapts exactly to your processes, and grows with your business. No unnecessary features, no compromises. You only pay for what you need. Maintenance is simplified because the code is clean and documented. Updates happen at your pace, without depending on an external vendor.
Technical architecture
Front-end: React + TypeScript - Reactive and performant interface - Reusable components for visual consistency - Interactive dashboards with Recharts - Smooth user experience on all devices
Back-end: Node.js + Express - Robust REST API documented with Swagger - Fine-grained role and permission management - Async jobs for heavy tasks like exports - Third-party integration via webhooks
Database: PostgreSQL - Proven production reliability - Excellent performance for complex queries and reports - Native JSON support for schema flexibility
Key features
- Executive dashboard — real-time KPIs, charts, automatic alerts
- Order management — complete workflow from order to delivery
- Cost tracking — breakdown by project, client, and period
- Stock management — reorder alerts and history
- Data export — CSV, PDF, and accounting integration
Real-world results
I have built several custom ERPs for Swiss SMEs. The productivity gain is typically visible within the first weeks. One client reduced manual data entry time by 60%. Another was able to replace three separate tools with a single unified interface.
Conclusion
A custom ERP is an investment that pays for itself quickly. It gives you exactly the tools you need, without compromise, and grows with your business.