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MohamedWElteir/README.md

Mohamed Wael

Backend Engineer @ CodeZone LLC • ICPC Competitor • Distributed Systems Enthusiast

Building scalable backend systems, distributed architectures, and high-performance APIs with .NET.


About Me

I'm a Backend Engineer with professional experience developing and maintaining enterprise-scale applications in healthcare and financial domains.

My primary interests are software architecture, distributed systems, backend development, database design, and performance engineering. Alongside my professional work, I compete in programming contests and continuously study system design and large-scale software engineering.

  • Backend Engineer at CodeZone LLC
  • ECPC Finalist
  • Passionate about Software Architecture & Distributed Systems
  • Interested in High-Performance Backend Engineering

Professional Experience

Backend Engineer — CodeZone LLC

Working on enterprise applications serving healthcare and business domains.

Responsibilities

  • Designing and developing backend services using ASP.NET Core
  • Building and maintaining RESTful APIs
  • Writing and optimizing complex SQL queries and database operations
  • Implementing business-critical workflows and billing systems
  • Maintaining large-scale legacy systems while introducing modern development practices
  • Debugging and resolving production issues in mission-critical systems

Technologies

C# ASP.NET Core SQL Server Docker Git MediatR Microservices


Competitive Programming

ICPC & Problem Solving

  • ECPC Finalist
  • Solved hundreds of algorithmic problems
  • Strong foundation in algorithms and data structures

Areas of Strength

  • Dynamic Programming
  • Graph Theory
  • Trees
  • Shortest Path Algorithms
  • Data Structures
  • Greedy Algorithms
  • Number Theory
  • Complexity Analysis

Technical Skills

Languages

C# C++ Java Python JavaScript Go

Backend Development

.NET Node.js

Experience with

  • ASP.NET Core
  • REST APIs
  • Microservices
  • Authentication & Authorization
  • WebSockets
  • Background Services
  • Dependency Injection
  • Middleware Development
  • API Design

Databases

SQL Server Databases

  • SQL Server
  • MySQL
  • MongoDB
  • Database Design
  • Query Optimization
  • Indexing Strategies
  • Stored Procedures

Messaging & Distributed Systems

RabbitMQ Kafka

DevOps & Tools

Docker Git

  • Docker
  • Git
  • CI/CD Pipelines
  • Containerized Deployments

Featured Projects

InterviewArchitect

AI-powered interview preparation platform built using a microservices architecture.

Highlights

  • ASP.NET Core Microservices
  • RabbitMQ Event Bus
  • Real-Time Communication with WebSockets
  • AI-Powered Mock Interviews
  • Auth0 Authentication
  • Dockerized Deployment
  • Automated Feedback & Badge System

In-Memory Cache Engine

Custom cache implementation focused on performance and systems engineering concepts.

Features

  • LRU Eviction Policy
  • LFU Eviction Policy
  • Thread-Safe Design
  • Performance-Oriented Architecture
  • Efficient Memory Management

Profiles

Codeforces LeetCode LinkedIn

GitHub Statistics


Currently focused on backend engineering, software architecture, distributed systems, and building scalable platforms.

Pinned Loading

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    A chat application build in Clean Architecture. Following Milan's Clean Architecture Series on YouTube: https://youtube.com/playlist?list=PLYpjLpq5ZDGstQ5afRz-34o_0dexr1RGa&si=V03hjvApziqi9u0G

    C#

  2. grades-checker grades-checker Public

    A tool I made to help me automate my grades checking process of my university.

    JavaScript 3

  3. AdminKeyAPI AdminKeyAPI Public

    Simple API in .NET 8

    C# 1

  4. GO GO Public

    Longue for everything in golang

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  5. Turing-Machine-Simulator Turing-Machine-Simulator Public

    A very simple Turing Machine implementation in C++

    C++ 3

  6. 3D-model-in-cpp 3D-model-in-cpp Public

    This is a graphics project and was based on some tutorials and self study

    C++ 1