Sajjad Aiyoob

Real-time school bus tracking with NFC student verification and sub-100ms WebSocket updates to parents. Led a 6-person team building a FastAPI + PostGIS backend, Flutter apps for drivers and parents, and a React admin dashboard. XGBoost ETA model that gets smarter with every route.

Wanted to actually understand enterprise backend infrastructure. So I built it — a gamified simulator with four progressive challenges: API gateway routing, rate limiting, Kafka event streams, and live telemetry. WSO2 API Manager as the gateway, Prometheus + Grafana watching everything.

What does a pod crash actually cost you? CACOP answers that. Injects real failures into a local Kubernetes cluster with Chaos Mesh, measures CPU and memory spikes, and converts system inefficiencies into simulated dollar costs. PLG stack watching the whole thing.

An API gateway that actually thinks. IsolationForest anomaly detection catches unusual traffic before it becomes a problem. Rate limiting, IP blacklisting, circuit breaker, round-robin load balancing — all configurable. Real-time Streamlit dashboard so you can watch it work.

A portfolio you SSH into. Built in Go with Bubble Tea, containerised with Docker, tunneled through an AWS EC2 instance to bypass ISP routing restrictions. Try it yourself.