CLIENT PROJECT
Quem Quer Ser Contabilista
Real-time quiz game for accounting professionals. Built for 5,000+ concurrent players at the Portuguese Certified Accountants Congress.
Player App
Native mobile experience for joining games and competing in real-time
Welcome & Entry
Home
Main entry point
Login
Enter game code
Profile
Create your identity
Onboarding Flow
Step 1
How to play
Step 2
Answer questions
Step 3
Score points
Step 4
Win prizes
Results
Leaderboard
Final rankings
Event Screen
Large format displays for live events and conferences
Game Starting
Waiting for players to join
Live Question
Real-time gameplay with leaderboard
Answer Reveal
Showing the correct answer
How It Was Built
Architecture designed for real-time performance at scale
The Challenge
Build a live trivia game that could handle 5,000+ simultaneous players at Portugal's largest accounting conference, with sub-second response times for fair competition.
The Solution
WebSocket server with Redis for real-time state management. React Native app for players, React web app for the stage display, and a custom admin dashboard for game control.
What I Built
- Real-time WebSocket server (5K concurrent connections)
- Player mobile app with instant feedback
- Admin control dashboard for game masters
- Stage leaderboard display with animations
- Score calculation engine with fair timing
- Load-balanced architecture for reliability