Wilbert Pangilinan

I’m a Senior Frontend Engineer / JavaScript Architect with 4+ years of experience building and scaling high-performance, real-time SaaS, fintech, healthcare, and AI-driven platforms used by thousands of concurrent users. My work sits at the intersection of frontend architecture, performance engineering, and product impact.

I specialize in React, Angular (13–14+), and TypeScript, with deep expertise in microfrontend architecture, modular UI systems, and design systems for large-scale applications. I enjoy working on complex frontend problems—whether that’s optimizing rendering performance, designing scalable state management, or leading framework migrations that unblock teams and accelerate delivery.

At Wallstreet.io, I led the frontend architecture for a real-time trading platform serving 5,000+ concurrent users. I architected Angular + NgRx applications, built low-latency trading dashboards using WebSockets and Socket.IO, and delivered measurable results—20% improvement in UI stability, 25% fewer support tickets, and 30% faster release velocity through Angular upgrades, CI/CD automation, and improved testing strategy.

Previously at Ringbook.io, I owned the frontend architecture for a React + TypeScript SaaS platform with 10,000+ MAUs. I designed a modular React + Vite setup that improved developer productivity by 30%, optimized rendering performance by 20%, and built AI-assisted document workflows using OpenAI API and LangChain, achieving 95% validation accuracy and reducing manual review time by 40%. I also implemented real-time collaborative editing and introduced monorepo architecture with shared type systems to align frontend and backend development.

I’ve also worked in regulated environments, contributing to HIPAA-compliant healthcare applications at Teladoc Health, and earlier in my career built Web3 and blockchain-based interfaces, integrating smart contracts, NFT analytics, and Unity WebGL experiences.

Beyond hands-on development, I’ve mentored engineers, defined architecture and code-review standards, and collaborated closely with product managers, designers, backend engineers, and QA teams. I care deeply about accessibility (WCAG), performance, and maintainability, and I believe great frontend engineering is about building platforms—not just screens.

I’m driven by solving hard problems, shipping reliable systems, and building interfaces that deliver real business value and great user experience at scale.