About

Key Features

• Promoted from Junior to Mid-Level after leading architectural modernization, performance optimization, and backend automation initiatives across React and Node.js systems.

Main Contributions

• Drove architectural decisions in a multi-year migration from ExtJS to React, collaborating with cross-functional teams to define frontend stack, libraries, modern tooling with Vite, and performance strategies;
• Designed and implemented a real-time dashboard architecture using WebSockets, React Query, and a configuration-driven approach, reducing development complexity and accelerating delivery of new features;
• Optimized SQL queries in operational dashboards over historical tables with more than 26M records, reducing estimated cost by up to 9.2x, memory consumption by up to 83x, and repetitive database calls by up to 800x through execution plans, XEvent Profiler, query rewriting, batch loading, and compatibility with SQL Server and Oracle;
• Reduced internationalization overhead by 94.5% (1,518 ms → 84 ms per session) with a language-keyed static cache and controlled invalidation, eliminating redundant processing during frequent React re-renders;
• Built backend automation services with NestJS, Node.js, and Puppeteer for data extraction from legacy web portals without APIs;
• Developed the backend foundation of an AI assistant using NestJS and LangChain, enabling contextual question answering over company documentation through knowledge base integration;
• Experience with AI-assisted development using Codex, Claude, Cursor, and Kiro, creating and integrating MCPs, agent-oriented workflows with Kiro CLI, and Spec-Driven Development (SDD) with Spec Toolkit for specification-guided implementation;

Technologies

Technologies

Main Contributions

• Built approximately 80% of the frontend of a solar monitoring platform MVP for enterprise clients within a 3-month delivery cycle using Vue.js.

Technologies