# ABDELRAHMAN MAHMOUD - Technical Portfolio & AI Profile

> Architecting resilient distributed backends, high-concurrency Node.js services, and dynamic React interfaces.
> Canonical URL: https://abdelrahmanmahmoud.vercel.app
> Complete LLM Full Text: https://abdelrahmanmahmoud.vercel.app/llms-full.txt

## Overview
- **Name:** ABDELRAHMAN MAHMOUD
- **Role:** FULL STACK DEVELOPER | BACKEND & CLOUD ENGINEER
- **Location:** Cairo, Egypt
- **Availability:** OPEN TO WORK // FULL-TIME & CONTRACT
- **Bio:** 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.

## Core Competencies & Skills
### PROGRAMMING LANGUAGES
- TypeScript
- JavaScript (ES6+)
- C++
- HTML5
- CSS3

### BACKEND & API ARCHITECTURE
- Node.js
- Express.js
- RESTful APIs
- Microservices
- Modular Monoliths

### FRONTEND & UI DEVELOPMENT
- React.js
- Angular
- Redux Toolkit
- Tailwind CSS
- Progressive Web Apps (PWA)

### DATABASES & CACHING
- PostgreSQL
- MongoDB
- Redis (Caching & Rate Limiting)
- SQL Server
- Prisma ORM
- Mongoose

### CLOUD & DEVOPS
- AWS
- Docker
- Terraform (IaC)
- GitHub Actions
- CI/CD Pipelines
- Linux

### CORE CS CONCEPTS
- Data Structures & Algorithms
- Object-Oriented Programming (OOP)
- Multithreading (OpenMP)
- Role-Based Access Control (RBAC)
- System Design
- SDLC

### LANGUAGES
- Arabic (Native)
- English (Professional Working Proficiency)

## Featured Production Projects & Architecture
### NEXUS-CRM — Multi-Tenant Sales CRM SaaS (Featured)
- **Description:** 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.
- **Tech Stack:** React 19, TypeScript, Node.js, PostgreSQL, Prisma, Redis, Docker, Resend API
- **Dedicated Case Study Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/projects/nexus-crm
- **Live Production:** /assets/Projects/Nexus CRM/dashboard-overview.png
- **Source Repository:** https://github.com/Abdelrahman-Mahmoud-Elsaeed/NEXUS-CRM

### MediMind — Healthcare Management & Adherence Ecosystem (Featured)
- **Description:** 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.
- **Tech Stack:** Flutter, Next.js, PWA, Node.js, MongoDB, Socket.IO, Docker, Terraform, AWS ECS Fargate, Gemini AI OCR, Stripe
- **Dedicated Case Study Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/projects/medimind
- **Live Production:** /assets/Projects/MediMind/dashboard-overview.png
- **Source Repository:** https://github.com/Abdelrahman-Mahmoud-Elsaeed/MediMind

### Full-Stack E-Commerce Platform (Featured)
- **Description:** 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.
- **Tech Stack:** React, Node.js, Express, MongoDB, Docker, Terraform, GitHub Actions, Swagger
- **Dedicated Case Study Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/projects/e-commerce
- **Live Production:** /assets/Projects/e-commerce/01_home_page_full.png
- **Source Repository:** https://github.com/Abdelrahman-Mahmoud-Elsaeed/Product_Management_API

### Linear Equations Solver in C++ (Featured)
- **Description:** 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.
- **Tech Stack:** C++, High-Performance Computing, Algorithms, OpenMP, Multithreading
- **Dedicated Case Study Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/projects/linear-solver
- **Live Production:** /assets/Projects/Linear Equations Solving/linear_system_equation_simple.png
- **Source Repository:** https://github.com/Abdelrahman-Mahmoud-Elsaeed/linear_equation_solver_in_Cpp

## Industry Certifications & Credentials
### AWS Certified Developer – Associate
- **Issuer:** Amazon Web Services
- **Date:** October 2026
- **Status:** Verified
- **Verification & Preview Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/certifications/aws-developer-associate
- **Credential ID:** 07ee61c839764b32ae7e4d9f3e11826a

### AWS Certified Cloud Practitioner
- **Issuer:** Amazon Web Services
- **Date:** July 2026
- **Status:** Verified
- **Verification & Preview Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/certifications/aws-cloud-practitioner
- **Credential ID:** 49a69e2bee3f4dde9b7c43c832ce9149

### Meta Front-End Developer Specialization
- **Issuer:** Coursera & Meta
- **Date:** April 2026
- **Status:** Verified
- **Verification & Preview Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/certifications/meta-frontend-developer
- **Credential ID:** FR55AET5H5QQ

### AI-Based Software Development Specialization
- **Issuer:** MCIT in collaboration with Egyptian Military Academy
- **Date:** Nov 2025 – Present
- **Status:** IN PROGRESS
- **Verification & Preview Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/certifications/mcit-ai-software-development


### Advanced Full-Stack Web Development Certification
- **Issuer:** MCIT & Udacity
- **Date:** March 2023
- **Status:** Verified
- **Verification & Preview Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/certifications/udacity-fullstack-developer
- **Credential ID:** HG4NWNRJ

## Narrative Journey & Career Phases
### Phase 01: FROM ZERO TO SOFTWARE ENGINEER
- **Summary:** Started coding from absolute zero in my final year at Mansoura University (Computer Teacher Preparation). With no CS degree or head start, I committed completely to learning softwa...
- **Dedicated Phase Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/about/phase-01

### Phase 02: FELLOWSHIP & FIRST CLIENT DELIVERY
- **Summary:** Earned the Advanced Full-Stack Web Development certification by MCIT × Udacity. Rather than staying in tutorials, I entered the global freelance market on Upwork—shipping real clie...
- **Dedicated Phase Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/about/phase-02

### Phase 03: MILITARY SERVICE: TACTICAL FORGE
- **Summary:** Served mandatory military duty for one year right after graduation. While an inevitable hiatus from daily coding, it forged operational resilience, mental stamina, and an urgency t...
- **Dedicated Phase Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/about/phase-03

### Phase 04: DIGILIANS AI SOFTWARE TRACK
- **Summary:** Selected for Digilians—the presidential AI-based software track organized by MCIT and the Egyptian Military Academy. Deepening expertise across distributed architectures, cloud-nat...
- **Dedicated Phase Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/about/phase-04

### Phase 05: PRODUCTION SCALE: NEXUS & MEDIMIND
- **Summary:** Transformed advanced training into production scale: architected NEXUS-CRM's multi-tenant RBAC system with Redis caching, and led a 6-developer team to build and deploy MediMind on...
- **Dedicated Phase Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/about/phase-05

### Phase 06: DUAL AWS CERTIFIED & READY TO SHIP
- **Summary:** Validated by two AWS certifications and production system leadership. Combining backend rigor with cloud fluency, actively seeking a Junior Full Stack or Backend Engineer role to b...
- **Dedicated Phase Route:** https://abdelrahmanmahmoud.vercel.app/portfolio/about/phase-06

## Professional Experience
### Freelance Full-Stack Developer @ Upwork Platform (2023 – 2026)
Delivered production client solutions with 5.0 ★ client rating across frontend and backend modules.
- Google-style FAQ Portal (Sep 2023 – Feb 2024 · Angular, Node.js, MongoDB): Built a Google-style FAQ search platform with text and image search, full-text search, relevance ranking, and XLS/CSV bulk upload.
- Angular Client Codebase (Oct 2023 – Aug 2026 · Angular, TypeScript): Delivered Angular tasks in functional units on the client's existing Git repository, including a reusable module of 5+ configurable UI components.

## Contact & Social Links
- **GITHUB:** [Abdelrahman-Mahmoud-Elsaeed](https://github.com/Abdelrahman-Mahmoud-Elsaeed)
- **LINKEDIN:** [abdelrahman-mahmoud-akl](https://www.linkedin.com/in/abdelrahman-mahmoud-akl/)
- **UPWORK:** [Abdelrahman M.](https://www.upwork.com/freelancers/~014afdf02b133b0c03)
- **WHATSAPP:** [(+20) 01095160726](https://wa.me/201095160726)
- **EMAIL:** [abdelrahman.mahmoud.elsaeed@gmail.com](mailto:abdelrahman.mahmoud.elsaeed@gmail.com)

## Machine-Readable Endpoints
- Raw JSON Endpoint: https://abdelrahmanmahmoud.vercel.app/api/profile
- Full LLM Corpus: https://abdelrahmanmahmoud.vercel.app/llms-full.txt
- Sitemap: https://abdelrahmanmahmoud.vercel.app/sitemap.xml