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Prince-Derrek/README.md

🖥️ SYSTEM TERMINAL // Derrek.Engine

.NET Software Engineer | Systems Programming & High-Integrity Architecture | Engineering High-Throughput Systems


Boot Sequence
Who Am I
Active Threads
Tech Stack
Projects Directory


📂 ENGINEERING PORTFOLIO

Live Deployments, System Architectures, and Private Enterprise APIs


📱 Attend-ED: Geo-Fenced Mobile Verification

> cat /var/www/projects/Attend-ED/readme.md

A modern student attendance application focusing on seamless identity verification.

  • Core Mechanics: Integrates vector matching algorithms to securely and accurately verify student identities. Integrates geo-fenced attendance marking to prevent fraud in signing attendances.
  • Scope: Full-stack development spanning technical architecture, UI mockups, and mobile application implementation.
  • Tech Stack: ASP.NET Core.NET MAUIMVVMEF CorePostgreSQLJWT AuthenticationDocker
  • 🔗 Live URL: Attend-ED Frontend
  • 🔗 Backend Repo: GitHub Link | Frontend Repo: GitHub Link

🎓 SMPS Exam System: High-Volume Booking Engine

> cat /var/www/projects/SMPS-Exam-System/readme.md

A high-throughput Web-Based University Examination Booking, Payment and Verification System.

  • Core Mechanics: Designed to handle concurrent booking requests with strict transaction integrity and deployment planning.
  • Scope: Spearheading an engineering team, focusing on structured execution, backend architecture, and clean project delivery.
  • Tech Stack: ASP.NET CorePostgreSQLEF CoreHangfireReact.jsGithub Workflows (CI/CD)
  • 🔗 Live URL: SMPS Portal
  • 🔗 Repository: GitHub Link

🔒 WhatsApp Integration API: Secure Enterprise Messaging

> cat /var/www/projects/WhatsApp-Integration-API/readme.md

Proprietary Project — Source Code Cannot Be Shared (Access Denied)

A production-grade messaging integration API designed to power internal systems with secure, auditable WhatsApp communication. This project demonstrated enterprise-level backend engineering, clean architecture, security hardening, and scalable API design.

  • Highlights: Clean Architecture, Domain-Driven design, JWT Authentication, Service-to-Service Authorization, Dynamic Policy-Based Access Control, Structured Logging with Serilog.
  • Tech Stack: ASP.NET Core 8SQL ServerEF CoreAutoMapperSerilogModular-Monolith Architecture

🚗 P2P Car Rental System: Real-Time Telemetry

> cat /var/www/projects/Car-Rental-System/readme.md

A full-stack application for renting and listing vehicles in a peer-to-peer (P2P) marketplace model. The standout feature is Real-time GPS vehicle tracking, streaming telemetry using SignalR and displayed on an interactive Leaflet.js map.

  • Tech Stack: ASP.NET Core MVCSQL ServerEF CoreSignalRLeaflet.js
  • 🔗 Repository: GitHub Link


📊 SYSTEM TELEMETRY & METRICS

Automated Activity Tracking & Contribution Analysis


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  1. smps-exam-system smps-exam-system Public

    A modern, full-stack web application designed to streamline the management, booking, and verification of supplementary university exams. Built with a strict Clean Architecture backend and a respons…

    C#

  2. Attend-Ed Attend-Ed Public

    A high-performance ASP.NET Core Web API built to ensure absolute academic integrity. It leverages a serverless PostgreSQL database (Neon DB) with PostGIS spatial querying to process high-accuracy G…

    C#

  3. Attend-Ed-Frontend Attend-Ed-Frontend Public

    A mobile-first Progressive Web App (PWA) built with React and Tailwind CSS, deployed as a native Android application using Google Bubblewrap. It utilizes the browser's native cryptography and high-…

    JavaScript

  4. Car-Rental-Management-System Car-Rental-Management-System Public

    This project is a full-stack Peer-to-Peer Car Rental Management System (CRMS) built using .NET 8 for both the backend API and the frontend MVC application. It features secure JWT authentication, ro…

    C#

  5. TinyDatabaseSystem TinyDatabaseSystem Public

    A lightweight, in-memory Relational Database Engine built from scratch in .NET 8. Features a custom SQL parser, recursive descent interpreter, hash indexing, and dual Console/Web interfaces. No ext…

    C#