ABDELRAHMAN MAHMOUD
Self-taught Full Stack & Cloud-fluent Engineer who transitioned into tech through relentless discipline. Proven track record delivering 5.0 ★ freelance solutions on Upwork, architecting enterprise multi-tenant systems (NEXUS-CRM, 47 endpoints, RBAC, Redis), and leading an engineering team to deploy cloud-native healthcare infrastructure on AWS ECS Fargate with Terraform. Dual AWS Certified (Developer Associate & Cloud Practitioner), seeking high-impact Junior Full Stack / Backend opportunities in Cairo or remote.
FEATURED DELIVERABLES // PRODUCTION PROOF
NEXUS-CRM — Multi-Tenant Sales CRM SaaS
A sleek, high-performance Multi-Tenant Sales CRM SaaS engineered for modern sales teams. Streamline pipeline velocity, manage omnichannel contacts, and close deals faster with strict application-level tenant isolation, interactive Kanban boards, and zero-trust authentication.
MediMind — Healthcare Management & Adherence Ecosystem
An enterprise-grade, intelligent healthcare management system designed to automate, track, and optimize patient medication adherence. MediMind bridges the operational gap between patients, family caregivers, professional medical contacts, partner pharmacies, and platform administrators. Built with a Flutter mobile app and a Next.js Progressive Web App (PWA), powered by a containerized Node.js/Express backend on AWS ECS Fargate.
Full-Stack E-Commerce Platform
Engineered a production-grade full-stack e-commerce system with a decoupled React frontend and RESTful Express API. Includes dynamic multi-image rendering optimized for SEO and Core Web Vitals, persistent cart & wishlist, secure checkout, interactive Swagger API docs, automated GitHub Actions CI/CD pipelines, and Terraform scripts managing AWS cloud infrastructure.
Linear Equations Solver in C++
Developed a high-performance numerical C++ engine to solve massive systems of linear equations using Gaussian elimination with partial pivoting. Applied OpenMP parallelization loops, flattened 1D contiguous matrix layouts to conquer the Memory Wall, and low-level cache optimizations, solving up to 10,000 equations in ~3 minutes.
VERIFIED CLOUD & CREDENTIALS
OFFICIAL AWS
CORE ARCHITECTURAL PILLARS
FULL MATRIX →Hands-on experience engineering responsive React 19 interfaces, modular state management, and high-concurrency Node.js / TypeScript backends.
Practical experience with AWS ECS Fargate, Terraform IaC, Redis caching, and resilient application-level multi-tenant isolation.
Dual AWS Certified with a verified 5.0 ★ freelance track record on Upwork, delivering clean, maintainable, and well-tested code.