At PT Teknologi Digital Terdepan, I built and maintained production web applications with Next.js, React, and TypeScript. I refactored Google Maps API usage to reduce redundant requests and lower billing costs.
I also implemented Zustand and React Query to reduce redundant API calls and improve app responsiveness. I integrated Midtrans payments and Biteship shipping into the production checkout flow.
On my Flash Sale Ticketing Backend project, I used Redis atomic Lua scripts to prevent overselling during concurrent checkouts, with BullMQ handling asynchronous processing. I integrated Midtrans Snap and tested checkout with 30 authenticated users competing for five units of stock.
I built a full-stack e-commerce platform with a Nuxt and Vue storefront and a Laravel REST API and admin panel. It includes a persistent cart, multi-step checkout, shipping cost calculation, and hybrid authentication.
