Vanilla JavaScript at production scale, responsive layout systems, canvas-based graphics generation, and Progressive Web App builds — installable, with offline-safe shells and live update detection.

Firebase (Auth, Firestore, Realtime Database, Storage, Cloud Messaging) as a primary backend, plus serverless functions on Netlify using the Firebase Admin SDK for anything the client shouldn't do directly.

Live presence tracking, WebRTC peer-to-peer audio with custom signaling, and push/in-app notification pipelines that actually reach people when it matters — not just when they happen to refresh.

Paystack integration for real money movement, referral and social-share mechanics, and admin tooling built for a non-technical operator to actually run the business day to day.