Ahmadreza Hoseinkhani

Enhanced the performance of offerland.ca by using React.lazy and React.Suspense, resulting in an average 20% reduction in largest contentful paint (LCP). Detected and resolved a memory leak issue using Chrome DevTools, resulting in an 80% reduction in memory usage. (In the worst case scenario, page memory consumption decreased from approximately 1.5 GB to 300 MB.)

Refactored the push notification system, which is utilized by over 4,000 websites serving more than 80 million users, using TypeScript, Jest, Webpack, and Service Worker, resulting in a 20% reduction in loading time and a 30% decrease in service error rates (based on Sentry logs). Boosted overall performance by reducing bundle size and eliminating unused CSS resources through the use of Webpack, Babel, and Purge CSS, resulting in a 25% reduction in largest contentful paint(LCP).

Improved communication between our customers and the client support colleagues by developing a chat interface using React.js and WebSocket. Decreased user confusion by implementing a guide system using Intro.js in collaboration with other team members, resulting in a 30% reduction in support tickets.