Overview
What this challenge is about.
Real-Time Collaboration Whiteboard with WebSockets. Advanced challenge in code. Writing production code that solves real engineering problems, earn a blockch...
The Brief
What you'll do, and what you'll demonstrate.
Prototype a 6-user real-time whiteboard in React + Node.js + Socket.IO with under 100ms p95 cursor-update latency.
This is not a coding exercise. It is the work a software engineer does between a Jira ticket and a merged PR. That distinction matters to every hiring manager who has seen candidates solve LeetCode problems and none who have shipped production code under real constraints.
When you finish, you will have something most graduates do not: a real-world deliverable, verified by Ewance, that you can show to a hiring manager and say "I did this. Here is the proof."
Earning criteria — what you'll demonstrate
- Build a real-time web application using WebSockets
- Reason about state synchronization tradeoffs (LWW vs OT vs CRDT)
- Measure latency and message-loss in a real network
- Document architecture decisions for a sceptical engineering reviewer
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Aligned coursework coming soon.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
- Websockets
Apply websockets to solve real industry problems and demonstrate production-level capability.
- React
Build component-based UI with hooks, state management, and modern React patterns.
- Nodejs
Apply nodejs to solve real industry problems and demonstrate production-level capability.
- Real Time Systems
Apply real time systems to solve real industry problems and demonstrate production-level capability.
- Performance Testing
Apply performance testing to solve real industry problems and demonstrate production-level capability.
- State Sync
Apply state sync to solve real industry problems and demonstrate production-level capability.
Careers
Career paths this challenge builds toward
Completing this challenge demonstrates skills that transfer directly to these roles: