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AbdoSameer/README.md

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About Me

Computer Science graduate from Misr University for Science and Technology specializing in backend and full-stack development using .NET Core. Strong foundation in algorithms, system design, and modern web technologies, with practical experience building scalable applications .

  • Based in Cairo, Egypt
  • Completed Digital Egypt Pioneers Program (.NET Web Developer)
  • Passionate about Clean Architecture, DDD, and high-performance systems

Tech Stack

C# .NET ASP.NET Core EF Core SQL Server Redis Angular TypeScript Python Docker Azure Git Linux C++ Java JavaScript HTML5 CSS3 Tailwind CSS


Featured Projects

Production-grade full-stack event ticketing platform built with Clean Architecture and strict Domain-Driven Design. Handles up to 50,000 seats per event with zero overselling under concurrent booking traffic. Key highlights:

  • Real-time seat selection — WebSocket seat locking with Redis Pub/Sub cross-instance broadcasting and an interactive D3.js SVG venue/seating chart
  • Concurrency safety — SQL Server rowversion optimistic concurrency with 3-attempt retry, atomic seat-reservation transactions
  • Asynchronous reliability — Transactional Outbox pattern with background polling, dead-letter queue, idempotency guards, and exponential-backoff retries
  • CQRS + pipelines — MediatR command/query separation with FluentValidation and logging pipeline behaviors, Result pattern instead of exceptions
  • PaymentsStripe Checkout integration (with mock gateway for dev) and deferred (Fawry) payment flow
  • Caching — Redis cache-aside layer with graceful degradation and post-commit invalidation
  • Security — JWT auth with role-based authorization (Admin / Organizer / Attendee)
  • Observability — end-to-end distributed tracing via correlation/causation IDs across HTTP → handler → outbox → background jobs, with structured logging pipeline behaviors
  • Testing — 3-tier test pyramid (~111 tests) with Testcontainers, Respawn, and barrier-synchronized concurrency tests

Tech: .NET 9, ASP.NET Core Web API, MediatR, FluentValidation, EF Core 9, MS SQL Server, Redis, Stripe, WebSockets, JWT, Angular 19, TypeScript, D3.js, Tailwind CSS


AI-powered platform matching job seekers with opportunities using NLP and resume parsing. Achieved 85%+ accuracy in role matching during testing with real user profiles.

Tech: Python (Scikit-learn), .NET Core Web API, Angular, MS SQL Server


Academic management system with role-based access control, course management, and user administration. Supports 100+ users, reduced manual operations by 60%.

Tech: ASP.NET Core MVC, Entity Framework Core, MS SQL, Identity, Repository Pattern


GitHub Stats

GitHub Stats Top Languages

Experience & Certifications

  • Digital Egypt Pioneers Program - .NET Web Developer (Apr 2024 - Oct 2024)
    Ministry of Communications and Information Technology (MCIT), Egypt

  • B.Sc. in Computer Science - Misr University for Science and Technology (Aug 2021 - Aug 2025)
    Scientific Computing Track | Grade: Very Good

  • Berlitz English Communication Skills - Professional workplace-focused fluency


Profile Views

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  1. Eventiy Eventiy Public

    Production-Grade Event ticketing platform built with .NET 9 & Angular 19, featuring DDD, CQRS, Real-time WebSockets, and Transactional Outbox patterns for high-concurrency consistency.

    C# 2

  2. Depi-Project Depi-Project Public

    Forked from EbraheemAbdelAziz/Depi-Project

    CSS

  3. Jobify-Api Jobify-Api Public

    Forked from Shhirefabdelmonem/Jobify-Api

    C#

  4. Jobify-App Jobify-App Public

    Forked from Shhirefabdelmonem/Jobify-App

    CSS

  5. Model_API Model_API Public

    Python