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23 followers · 17 following
  • Z4U, Art Of Coding
  • Cairo

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Sayedelmahdy/README.md
Sayed Elmahdy · I build .NET software that real businesses run on

Portfolio LinkedIn Email WhatsApp CV

Terminal: whoami, focus, tests passing and the three live stores

🟢 Shipped & running in production

Z4U Store admin platform: watch the walkthrough (demo data) Cairo Airport staff management system
El Burhan Academy CRM WhatsApp SaaS platform
Conscript Affairs System, Ministry of Interior Elmahdy Relay IoT firmware
What's under the hood of the live stores
🏗️ Platform One multi-tenant ASP.NET Core 8 API, each tenant with its own brand, database and domain
💳 Payments 18 gateways behind one adapter (Paymob, Tabby, MyFatoorah, PayPal…), secrets sealed per tenant
🚚 Shipping Pluggable carriers: Aramex (SOAP / WCF), SMSA, weight-based rates, map-first addresses
🔄 ERP sync Items, stock and prices flow ERP → store through an outbox worker
⏱️ Jobs Hangfire: invoices, notifications and a 15-minute payment reconciliation sweep
✅ Quality ~1,900 automated tests · GitHub Actions deploys per tenant · Docker on Linux behind Cloudflare

🧰 Toolbox

Every day

C#, .NET, Visual Studio, Redis, Docker, GitHub Actions, Linux, Nginx, Cloudflare, Postman, Git

When the job needs it

JavaScript, jQuery, Bootstrap, React, Next.js, Node.js, Python, FastAPI, C++, Flutter, MySQL

Plus SQL Server, EF Core, Dapper, SignalR, Hangfire, QuestPDF, EPPlus, xUnit, k6, Serilog and Seq.

🌱 Career, as a git log

* a7f3e21 (HEAD -> main) Rejoined Z4U full-time as .NET Developer        Feb 2026 · now
*   5d0c9b4 Merge service: completed military service                    Feb 2026
|\
| * e19b7a2 ASP.NET MVC Developer, government entity                     Feb 2025 · Feb 2026
* | 3c44f10 Part-time at Z4U, remote                                     Feb 2025 · Feb 2026
|/
* 8b2d6e5 Joined Z4U as .NET Developer                                   Apr 2024
* 0f9a13c (tag: v1.0) B.Sc. Computer Science, El Shorouk Academy         2024
Contribution graph eaten by an amber snake

Open to software engineering roles · Cairo, Egypt (GMT+2/+3) · usually replies within a day

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