INDEX
#06
SYSTEM INDEX06
TIMELINE2024 - Present
ENGINEERING ROLEProduct Architect & Full-Stack Builder

Exam Hub

National Examination & Assessment Platform

Exam Hub screenshot
01 // THE PROBLEM

Students and schools lack structured, real-time assessment feedback, standardized national mock examinations, and scalable digital preparation infrastructure.

02 // LOCAL CONSTRAINTS

Platform must maintain high availability during peak examination cycles across varied network conditions throughout Ethiopia.

03 // ENGINEERED SOLUTION

Built a dedicated examination preparation platform delivering timed test simulations, comprehensive performance analytics, and structured subject drills. Engineered with custom PHP on a Laravel-based architecture, HTML, Tailwind CSS, high-speed REST API services, custom AI Gateway integration, and relational MySQL database storage on cPanel.

SYSTEMS DESIGN TOPOLOGY // VISUAL ARCHITECTURE

Addis Entrance Hub: Dual-Channel Delivery Topology

High-concurrency web and Telegram MTProto microservices over MySQL transactional persistence

Client Inbound
Web + Telegram
01
Ingress Gateway
Nginx / cPanel SSL
02
Core Service
Custom PHP & Fastify
03
AI Gateway Layer
Multi-Model Proxy
04
MySQL Persistence
Normalized Schema
05
REQUEST LIFECYCLE & EXECUTION PATH

Student requests from low-bandwidth mobile devices ingress through either the web interface or lightweight Fastify Telegram bot. Requests route through custom PHP controllers, querying an in-house AI Gateway for instant tutoring explanations and persisting test session attempts into normalized MySQL tables.

SYSTEM REACH6,000+ Active Students
RESILIENCE STRATEGYGraceful Offline Fallback & Telegram Channel Redundancy
[ARCHITECTURAL DECISIONS & ENGINEERING TRADEOFFS]
Laravel-Based Architecture (Custom PHP & Tailwind)

Built a clean, responsive examination testing interface using custom PHP following Laravel architectural patterns with Tailwind CSS for zero overhead on mobile devices.

REST APIs & Custom AI Gateway

Integrated high-speed REST API logic with the custom-built AI Gateway to provide real-time assessment scoring, automated test generation, and deep diagnostic insights.

MySQL Relational Engine (cPanel)

Structured question banks, candidate attempts, and detailed topic performance metrics in MySQL hosted on cPanel for high reliability during national exam preparation cycles.

[DEPLOYMENT MATRIX & STACK]
Custom PHP (Laravel-based architecture)HTMLTailwind CSSREST APIsAI Gateway (Custom)cPanelMySQL