Hamdan Amir's Work | ContraWork by Hamdan AmirHamdan Amir
AI Automation Engineer |AI Agents, Voice AI & CRM Automation
ProcureGuard AI | Procurement Automation System
ProcureGuard AI is an independent software engineering project designed to improve procurement data accuracy, invoice validation, supplier pricing, and operational accountability.
THE CHALLENGE
Procurement operations involve complex supplier records, purchase orders, invoices, and pricing rules. Inconsistent data and missing validation controls can create costly errors.
MY SOLUTION
I designed and implemented a secure, multi-tenant procurement database foundation using Supabase and PostgreSQL.
KEY FEATURES
Supplier, product, purchase order, and invoice data models
Invoice validation with calculated line totals
Price and quantity constraints to reject invalid records
Duplicate-record and overlapping supplier-price prevention
Organization-level relational integrity
Database structures for anomalies, approvals, and audit logs
TECHNOLOGY STACK
Supabase, PostgreSQL, SQL, and relational database design.
TESTING & RESULTS
Tested critical database constraints, including duplicate prevention, negative-price rejection, and supplier-price overlap validation.
PROJECT STATUS
Independent development project. Core database design and validation tested; advanced automation features remain in development. Full-Stack Software Engineering | Web, Mobile & AI Automation
From idea to production-ready software — I build modern digital solutions tailored to your business.
I'm a Software Engineer with 2+ years of development experience, specializing in full-stack web applications, cross-platform mobile apps, backend systems, and intelligent business automation.
I help startups, entrepreneurs, and businesses design, develop, integrate, and improve software that solves real problems.
My Services
1. Full-Stack Web Development
Responsive websites and modern web applications
React.js, Next.js, TypeScript, and Tailwind CSS
Admin dashboards, customer portals, and business platforms
API integrations and performance optimization
2. Mobile App Development
Cross-platform Android and iOS applications
Flutter and Dart development
Custom UI/UX implementation
Firebase integration and backend connectivity
3. Backend & API Development
Node.js and Express.js applications
REST API development and third-party integrations
Authentication, authorization, and database design
PostgreSQL, Supabase, and MongoDB
4. AI Agents & Business Automation
Custom n8n automation workflows
AI agents, chatbots, and voice assistants
OpenAI and Retell AI integrations
CRM workflows, lead automation, and API-based processes
5. SaaS & Custom Business Software
SaaS platforms and MVP development
CRM systems and internal business tools
Multi-tenant architecture and database design
Scalable application architecture
My Development Process
Discovery → Planning → Development → Testing → Delivery
I focus on clean code, responsive interfaces, secure integrations, maintainable architecture, and clear communication throughout the project.
Why Work With Me?
Full-stack engineering across web, mobile, and automation
Experience with modern JavaScript and Flutter technologies
API, database, and backend integration expertise
Professional communication and structured delivery
Solutions built around your actual requirements
Let's Build Something Valuable
Whether you need a professional website, mobile application, SaaS MVP, custom backend, or AI automation solution, I can help turn your requirements into working software.
Send me a message to discuss your project, scope, and timeline. ProcureGuard AI — Intelligent Procurement & Invoice Automation
Enterprise-focused procurement automation and financial validation system.
ProcureGuard AI is an independent software engineering project designed to help businesses improve procurement data accuracy, identify invoice discrepancies, and establish reliable approval and audit processes.
The Business Problem
Organizations often manage supplier records, purchase orders, invoices, and approval processes across disconnected systems.
Manual verification can make it difficult to identify pricing discrepancies, duplicate records, inconsistent quantities, and other procurement anomalies.
My Solution
I designed and implemented a structured procurement database foundation with secure tenant isolation, relational integrity, and validation rules.
The system architecture supports automated procurement checks, anomaly tracking, approval management, and auditability.
Key Features and Capabilities
Multi-tenant procurement data architecture
Supplier and product management
Purchase order and invoice data models
Pricing and quantity validation
Supplier agreement and price-history controls
Procurement anomaly tracking
Approval and audit-log structures
Row-Level Security (RLS)
Database constraints and integrity testing
Workflow automation architecture
Technology Stack
PostgreSQL, Supabase, SQL, n8n, REST APIs, and workflow automation.
My Role
AI Automation Engineer & Backend Systems Developer
Project Status
Independent development and validation project. Database security, relationships, and integrity rules have been tested. Production deployment and measured customer outcomes are not claimed.
Business Applications
Procurement teams, wholesale distributors, inventory-driven businesses, finance operations, and organizations seeking custom procurement validation systems.
Interested in automating procurement or financial workflows? Let's discuss your business requirements. Introducing VoiceOps AI — Intelligent AI Receptionist & Appointment Automation 🚀
An AI-powered automation project designed to help appointment-based businesses streamline customer inquiries and scheduling.
Built with Retell AI, n8n, Supabase, PostgreSQL, and Google Calendar, VoiceOps AI explores how conversational AI can connect with real business workflows.
🔹 AI-powered voice interactions
🔹 Appointment availability checks
🔹 Calendar and booking integrations
🔹 Workflow validation and error handling
🔹 Automated scheduling processes
This video is a conceptual showcase of the solution. The underlying automation workflows are being developed and tested as an independent project.
Developed by Veytrixa Technologies.
Looking for custom AI agents or business automation solutions? Let's connect.
#AIAgents #VoiceAI #n8n #AIAutomation #BusinessAutomation