# Zia ur Rehman

> Senior Full-Stack Engineer, SaaS Product Architect and Agentic AI Developer based in Lahore, Pakistan, working remotely with clients worldwide. 15+ years building production SaaS, ERP and accounting platforms on the MERN stack and AWS, and AI agents that automate real business workflows.

## Summary
- Name: Zia ur Rehman
- Role: Senior Full-Stack Engineer · SaaS Product Architect · AI Agent Developer
- Location: Lahore, Pakistan (PKT, UTC+5). Works remotely, worldwide.
- Contact: hafiz.e.zia@gmail.com · WhatsApp +92 345 458 0083
- LinkedIn: https://www.linkedin.com/in/zia-urrehman/
- Available for: SaaS product builds, technical lead roles, AI agent and automation projects, spreadsheet-to-web modernisation.

## AI skills
AI integration; AI agents and agentic automation; AI chatbots; RAG systems; AI automation; AI-powered SaaS features; AI document processing; AI coding and code modernisation; AI data extraction.

## Engineering skills
- Backend: Node.js, Express.js, PHP, Laravel, GraphQL, REST APIs, microservices
- Frontend: React.js, Next.js, Vue.js, Tailwind CSS, PWA
- Languages: JavaScript (ES6+), TypeScript, PHP
- Databases: MongoDB, MySQL, PostgreSQL, Redis
- Cloud & DevOps: AWS (EC2, S3, SES, Lambda, CloudFront, Amplify, Route 53), Docker, CI/CD, GitHub Actions
- SaaS: multi-tenant architecture, subscription billing, role-based access
- Integrations: Twilio (WhatsApp & SMS), SendGrid, Stripe, Google Maps API, HERE Maps API
- Domains: accounting and finance, ERP, HR and payroll, logistics and routing, marketplaces

## Featured work
- eAccountify: multi-tenant cloud accounting and ERP SaaS for SMEs (sales, purchases, double-entry ledger, bank reconciliation, fixed assets, financial reports, HR and payroll), with AI agents for reporting, cash-flow projection, receivables, anomaly detection and inventory. Role: Lead Developer / Product Owner.
- PlanABuilding: engineering-calculation SaaS for the pre-engineered buildings industry that replaced VBA-driven Excel workbooks with an online calculation engine. Role: Lead Software Engineer.

## Pages
- [Home](https://ziaurehman.com/): services, AI agents, selected work, skills, contact
- [About](https://ziaurehman.com/about/): background, approach, how he works, FAQ