Muhammad Hamza 's Work | ContraWork by Muhammad Hamza Muhammad Hamza
Turning ideas into powerful apps & digital products
Real-time product swap marketplace — architected NestJS backend, designed TypeORM schema, and led full deployment pipeline. B2B intelligence tool — designed concurrent scraping architecture across 5 sources (Companies House, LinkedIn, Google, Crunchbase, D&B) with configurable limits and CSV/Excel export. Sole architect and lead engineer. Designed the full system: a custom PDF extraction pipeline parsing rate tables and benefit classifications, an AI ranking model scoring plans side-by-side, and an RFQ comparison engine. Made all infrastructure decisions — executed a full production migration from AWS EC2 to a Mailcow VPS under a live client deadline, resolving PostgreSQL and MongoDB compatibility issues in production. Hospital HR & Payroll Platform
👨💼 Employee records management
💵 Payroll processing
🔒 Secure & scalable
🚀 Tech: Angular, Material UI, TypeScript
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