PeterGhattas
Building ERP, Manufacturing, Accounting, and Enterprise Systems using TypeScript, Next.js, NestJS, GraphQL, MongoDB, and PostgreSQL.
Technologies I work with daily
Projects
Enterprise systems built for real industrial operations and businesses.
Manufacturing ERP System
Integrated Factory Management System
A full-scale ERP system for an industrial manufacturing facility. Covers the complete production lifecycle from raw materials to finished goods, with integrated HR, maintenance scheduling, and advanced reporting dashboards.
Aqua Water ERP
Water Filtration Company System
A complete ERP system for a water filtration company covering Installments, Customers, Inventory, Accounting, and Sales management.
K-Gallery E-Commerce
Full-Featured Online Store
Full-featured e-commerce platform with Products, Orders, Payments, Dashboard, and Customer Management — built for scale.
Accounting & POS System
Integrated Financial Management
Comprehensive accounting system with General Ledger, Journal Entries, Invoices, Inventory control, and Financial Reports.
Stock Market SaaS
A product concept demonstrating AI-powered portfolio analysis. Showcases data collection pipelines, news sentiment analysis, and intelligent investment recommendations.
Case Studies
Beyond "I built a system" — the real problems, decisions, and outcomes.
The factory had no unified system. Production data lived in Excel, HR records were paper-based, inventory was tracked manually — leading to costly errors, lost materials, and zero operational visibility for management.
Built a comprehensive ERP from scratch with a NestJS + GraphQL API backend and Next.js frontend. Designed a normalized PostgreSQL schema covering all factory operations, with real-time dashboards powered by Power BI.
Customer installation records, payment schedules, and inventory were tracked in separate notebooks and phone calls. Field technicians had no app, and owners had no real-time business view.
Designed a mobile-first ERP with customer portal, field technician app, and management dashboard. Integrated installment tracking with automated payment reminders and inventory deduction on each installation.
The business was entirely offline. Product listings were on social media, orders came via DMs, payments were manual. No inventory system, no order tracking, no data insights.
Built a full e-commerce platform with a product catalog, shopping cart, Stripe payment integration, and an admin dashboard for order management. Added inventory tracking with low-stock alerts.
The business needed custom financial reports, a POS terminal that synced with accounting, and inventory that updated automatically on each sale. Off-the-shelf software couldn't be customized.
Built a custom accounting engine with double-entry bookkeeping, automated journal entries from POS transactions, and a Financial Reports module generating P&L, Balance Sheet, and Cash Flow statements.
Experience
From civil engineering on construction sites to building enterprise software — a unique trajectory.
- Built internal ERP and operational systems from the ground up.
- Automated reporting pipelines — eliminated manual report generation.
- Developed Power BI dashboards for production decision-making.
- Supported real-time operational monitoring across factory departments.
- Led a project to modernize railway station functionality through automation.
- Managed project logistics and ensured adherence to engineering standards.
- Oversaw advertisement placement and infrastructure upgrades.
- Supervised multi-story building construction focusing on concrete works.
- Oversaw electrical distribution planning and installation.
- Ensured compliance with structural engineering specifications.
- Managed office operations and administrative workflows.
- Used Adobe Photoshop for design work and Microsoft Office for reporting.
- Maintained client records and coordinated internal communications.
The Industrial-Digital Bridge
Most developers build for software companies. I build for factories, construction firms, and industrial operations — because I've worked on those floors. That context makes the difference between a system that looks good in demos and one that actually works at 5am in a manufacturing plant.
Certifications
Continuous learning across data, cloud, and full-stack development.
Google Data Analytics Professional Certificate
Comprehensive program covering data analysis, visualization, SQL, R programming, and Tableau. Taught by Google experts with hands-on projects.
Oracle Cloud SCM Consultant
Supply Chain Management on Oracle Cloud. Covers procurement, inventory, order management, and manufacturing planning in enterprise environments.
NestJS — Build Complete Backend APIs
Advanced NestJS development covering REST & GraphQL APIs, authentication, database integration with TypeORM and Mongoose, and microservices.
Next.js & React — The Complete Guide
Full stack React and Next.js development including App Router, Server Components, data fetching, authentication, and deployment strategies.
GraphQL & Apollo Client Mastery
Complete GraphQL architecture covering schema design, resolvers, mutations, Apollo Client state management, and real-time subscriptions.
Power BI Data Analyst
Business intelligence and data visualization with Power BI. Covers DAX formulas, data modeling, interactive dashboards, and enterprise reporting.
Let's Build
Something
Together
Whether you need an ERP system, enterprise software, or want to discuss how to digitally transform an industrial operation — I'm ready.
pghatas7@gmail.com