Engineering Software
for Scale and Performance.

An event-driven billing API integrating Stripe Checkout. Designed a non-blocking webhook system using Celery and Redis to process payments asynchronously, preventing API timeouts and duplicate database writes. Deployed to AWS EC2 behind an Nginx reverse proxy with HTTPS — running alongside AbyVest on a single t3.small instance, with isolated internal ports for the app, database, and cache layers.

A real-time stock portfolio tracker implementing a tiered Redis caching layer (60s TTL for live quotes, 24h for company profiles) to reduce external API calls and prevent rate-limiting. Features a service-layer architecture decoupling external API logic from route handlers. Deployed to the same AWS EC2 host as AbyFlow via Nginx path-based routing, with PostgreSQL and Redis isolated on internal-only ports.

A server-rendered application built to master scalable Flask architecture. Utilizes the App Factory pattern and Blueprints for strict MVC separation, RBAC for data isolation, and Cloudinary for file storage.