Senior Web Developer

• Part of Tuntun Desktop team, we create Desktop app with web technologies by utilizing Electron as the backend with its auto update feature. • Create new user onboarding, stock transaction, and account registration dashboard. • Part of Tuntun social network team, a feature for social engagement. This makes our end-user can share their thought opinions and interact with other Tuntun user inside Tuntun Ecosystem. • Create AI trading chatbot using SSE for real-time communication. Personal￾ized responses based on user portfolio, risk tolerance and market sentiment

As Analyst Programmer, I used my frontend development expertise to help the development of one of DevStack's products, related to: • Geotagging with Google Map, Chart integration, component development with Material UI and Tailwind

I was part of the migration team that helped transfer the following features from Stockbit old stack to Stockbit new stack using Next.js and TypeScript - eBook: an online library of books and articles about investing and trading - Screener: a tool that allows users to filter stocks based on various criteria and indicators - Valuation: a tool that provides users with valuation metrics and ratios for different stocks - Orderbook: a tool that shows the depth of market and the supply and demand of stocks` I was also the main front-end engineer for Stockbit Web EIPO (Webview), I was responsible for developing and maintaining various features and fixing bugs (but not limited) to: - Component development and styling - API integration - Authentication - Web theme integration with mobile (iOS/Android) - Analytic integration - EIPO Stories - Cypress component testing I was part of the front-end engineer team for Stockbit Web ESOP Dashboard, a web application that allows employees to view and manage their stock options. I helped with the development and bug fixes of various features, such as: - Authentication - Feature development, component and styling - Dashboard layouting As a front-end engineer for Stockbit Securities, I contributed to the development and bug fixes of various features, such as: - Cypress testing for Stockbit Webv3 securities features - Feature revamp - Orderbook optimization - API Migration - Analytic integration Performance Optimization Case: Solved critical React performance issue in WebSocket-based orderbook feature experiencing 200+ data changes per second per orderbook (8 concurrent orderbooks = 1600+ updates/second), causing massive re-renders and severe browser FPS degradation; Available to discuss optimization strategies in detail during interview