Mohamed Elbaz

I developed a multi-tenant property rental and roommate-matching platform using NestJS, TypeScript, PostgreSQL (Prisma), and Redis. I delivered matching algorithms, real-time chat (WebSockets), JWT multi-device sessions, subscription/credit-based eCommerce, notifications, admin dashboards, email
workflows, file uploads to Azure/AWS, and logging with Winston. I also architected modular microservices, documented APIs (Swagger), and wrote unit tests (Jest).

A modern, multi-tenant SaaS platform for managing paid time off (PTO) with comprehensive features for organizations of all sizes.

Features:
• Multi-tenant Architecture: Complete tenant isolation with secure organization management.
• Role-Based Access Control: Per-organization roles (admin, HR, employee) plus system-wide roles.
• User Onboarding: Three distinct paths for joining organizations (self-signup, invitation, admin provisioning).
• Invitation System: Support for both new users and authenticated users with Accept/Decline UI.
• Email Verification: Enforced email verification before app access.
• Tenant Gate Checks: Automatic validation of organization membership with safety checks.
• Subscription Management: Flexible plans with employee limits and modular feature gating.
• PTO Management: Request, approval, and tracking workflows with policy engine.
• Internationalization: Full i18n support (Arabic and English) with easy extensibility.
• Integrations Framework: Pluggable OAuth-based adapters for external apps (Slack, Google Calendar, etc.).
• Onboarding Wizard: Streamlined setup for new organizations.
• System Dashboard: Cross-tenant management for super admins.

I maintained and fixed issues in a learning management system for schools built with React and Redux web applications, presented substantial amounts of data using JavaScript and SVG charting libraries like Recharts, and dealt with drag and drop functionality.

Multi-model FastAPI inference and per-model demo pages. It supports:
• model catalog page (/models)
• dedicated web page per model profile (/models/{model_id})
• combined multi-model comparison page (/compare)
• inference by selected model (/API/classify?model_id=...)
• inference across all loaded profiles (/API/classify/all)
• dynamic task support per checkpoint (l1, l2, l3, etc. based on heads.pt)

A bilingual (Arabic and English, RTL) website for the Egyptian Association for Mathematics Education (ECME) annual international conference. Built with Next.js 15 and a PostgreSQL back end on Neon, served via Vercel.

I contributed to developing a marketplace for a celebrity's NFT collection. I built a UI components library using Storybook and Chromatic, consumed NFT smart contracts for payments, and integrated it with MetaMask wallets for authentication.

A replication of a desktop accounting application with a tabular representation of transactions and accounts and basic ability to create tabular reports.

I created a full-stack application to add the desktop application's database instance, allowing CRUD operations and displaying more customized reports.

I helped develop a marketplace for connecting gamers with campaigns and my primary responsibilities were converting Figma and Zeplin designs to React components, pages, and features, integrating with GraphQL and RESTful endpoints, and coding complex form wizards.

I structured and implemented a monolithic full-stack application for an NFT museum using PostgreSQL, Prisma, Nexus, and Apollo Server for the back end and Next.js, React, Apollo Client, Tailwind CSS, and Web3.js for the front end. I utilized third-party APIs and created an admin dashboard.

I built an express RESTful back end for an HR time tracking and payroll web application containing multiple modules, such as authentication, payroll system, and time tracking system, with the functionality to clock in or out and generate work records, and it had a role-based access control integrated with multiple third-party APIs like Stripe and Checkhq.