GAMA ERP

Enterprise Resource Planning System for Heavy-Lift Logistics

A full-stack ERP system built with AI-assisted development to manage heavy and over-dimension cargo logistics operations in Indonesia.

📊 Project Stats

Metric	Value
Lines of Code	505,000+
Database Tables	299
User Roles	15
Modules	14
Lighthouse Score	95-97

🎯 The Problem

PT. Gama Intisamudera operates heavy-lift and over-dimension cargo logistics across Indonesia. Before this ERP:

• 65 staff across 5 departments worked in data silos
• 28+ vendor relationships managed through spreadsheets
• 10 different documentation systems
• No real-time visibility into job profitability
• Critical decisions delayed by information gathering

I evaluated 6 major ERP systems (SAP, Oracle, NetSuite, Odoo, Dynamics 365, Sage). None fit our unique needs in Indonesian heavy cargo logistics. So I built one.

💡 The Solution

A custom-built ERP that integrates all business operations into a single platform, managing the complete lifecycle from customer quotation → job execution → invoicing → financial reporting.

Modules Developed

Operations	Finance	Support
Dashboard (26 views)	Invoicing & AR	HR & Payroll
Quotations	Disbursements (AP)	HSE Compliance
Proforma Job Orders	Financial Reports	Engineering
Job Order Execution		Equipment Assets
Shipping Agency		Customs (PIB/PEB)

🛠️ Tech Stack

Frontend:

• Next.js 15 (App Router)
• React 18 with Server Components
• TailwindCSS + Shadcn/ui
• Recharts for data visualization

Backend:

• TypeScript (strict mode)
• Supabase (PostgreSQL)
• Row-Level Security (RLS) policies
• 45+ Server Actions

🤖 AI-Assisted Development

This project was built using AI-assisted development - proving that domain expertise combined with modern AI tools can create production-grade software:

• Claude Code - Primary development partner for complex logic and architecture
• GPT-4 - Cross-referencing solutions and exploring alternatives
• Gemini - Documentation and code explanation
• Kiro IDE - Feature specifications and planning

"AI generates code. But someone has to ask the right question."

My 10 years in logistics taught me which problems actually matter. AI helped me solve them.

📁 Project Structure

/app
  /(main)
    /dashboard    - Role-specific dashboards (26 views)
    /pjo          - Proforma Job Orders
    /jo           - Job Orders (execution)
    /invoices     - Customer invoices & AR
    /customers    - Customer management
    /projects     - Project management
    /quotations   - Sales pipeline
    /equipment    - Asset management
    /hr           - HR & Payroll
    /hse          - Health, Safety, Environment
    /engineering  - Route surveys
    /agency       - Shipping operations
    /customs      - PIB/PEB declarations
    /reports      - 16 report types
    /ai-insights  - Natural language queries
/components
  /ui             - Shadcn components
  /forms          - Form components
  /tables         - Data tables with RLS
  /layout         - Layout components
/lib
  /supabase       - Supabase client (browser, server, middleware)
  /utils          - Helper functions
  /actions        - 45+ Server Actions
/types            - TypeScript types (299 table definitions)

🚀 Current Status

Production Trial (v0.9.18)

• ✅ System deployed and functional
• ✅ Users actively testing across departments
• ✅ Gathering real operational data
• 🔄 Full rollout target: March 2026

🔮 AI/ML Roadmap

The stable ERP foundation enables the next phase - intelligent automation:

Feature	Application
Cost Prediction	ML model to predict job profitability before accepting contracts
Route Optimization	Calculate optimal paths for oversized cargo
Predictive Maintenance	Forecast equipment failures before they cause delays
Demand Forecasting	Analyze quotation patterns for capacity planning

👨‍💻 Author

Alif Dio Atmando

• General Manager at PT. Gama Intisamudera (10+ years)
• MIT Supply Chain MicroMasters (4 verified certificates)
• BA Business Management - University of Greenwich

Built this entire system from scratch with no formal CS background using AI-assisted development.

🔧 Development Setup

# Clone the repository
git clone https://github.com/odnamta/Gama-ERP.git

# Install dependencies
npm install

# Set up environment variables
cp .env.local.example .env.local
# Add your Supabase credentials

# Run development server
npm run dev

📄 License

Proprietary - © 2025-2026 PT. Gama Intisamudera