Migrated the legacy React-Kotlin platform to Next.js single-handedly with **0 downtime**, later leading the frontend team as additional developers joined to maintain the projects
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Migrated the legacy React-Kotlin platform to Next.js single-handedly with **0 downtime**, later leading the frontend team as additional developers joined to maintain the projects
Maintained and upgraded the platform serving **18,000+ fundings**, ensuring optimal performance and reliability
Developed portals for **5+ stakeholder groups**, streamlining operations and reducing navigation friction for admins
Implemented an AI chat experience that consolidated admin workflows into a single conversation, eliminating page-hopping for common tasks and cutting task completion steps
Configured Claude Code skills/MCPs plus Playwright end-to-end suites to prevent regressions, and configured Webpack build pipelines leveraging AI assistants (GitHub Copilot, Claude Code) to improve developer velocity and bundle quality
Built IgorBox as a Progressive Web App (PWA) with a **60fps** video editor-like interface featuring audio playback and multiple layers for animatronic show creation
Implemented two-way live preview via websockets with **minimal delay** (<100ms), enabling real-time updates on physical devices
Created an innovative solution eliminating manual show uploads—IgorBox offers live preview, live updates, and OTA updates via internet, reducing deployment time and manual effort
Designed an n8n-like visual interface with logical gates and triggers, enabling faster animator iteration on automated animations
Developed debugging tools that accelerated development and facilitated real-time state monitoring across distributed devices
Optimized web performance for a high-traffic React Single Page Application by reducing bundle size by **88.5%** and load time by **91.1%**
Improved Time to Interactive by **67.4%**, resulting in a significantly faster and more efficient user experience
Migrated state management from Alt.js to Redux across **50+ components**, resulting in improved performance and a streamlined codebase
Contributed to migrations from JavaScript to TypeScript covering **20,000+ lines of code**, improving code maintainability and team collaboration
Configured Webpack for optimal code splitting and lazy loading, improving initial load performance by **60%**
Developed the redesign of an internal fleet management tool handling **15,000+ electric scooters**, creating a more user-friendly interface with reusable components
Built a clustering algorithm that filters **1,000+ daily pings** within **10 meters** proximity, enabling accurate speed estimation for each vehicle
Created trip visualization with timeline playback for **1,000,000+ rides per month**, allowing admins to see the exact paths users took on an interactive map
Recreated a legacy navigation menu using HAML, reducing menu render time by **40%** and improving responsiveness across devices
Migrated a high-traffic Single Page Application from React Router to Next.js for Brazil's largest retail chain with **1.5 million visits per month**, improving SEO rankings by **25%**
Improved application performance by migrating global state management from Recoil to Redux across **30+ components**
Refactored authentication between React Native WebView and React application, stabilizing intermittent token retrieval issues and reducing login failures by ~50%
Configured Webpack build optimization, improving build times and reducing production bundle size by **25%**
Resolved a critical Google Search Console issue within deadline, preventing removal from Google Search results and protecting approximately **$1.16 billion USD** in annual revenue
Built a modular CMS-driven institutional website using Next.js and Strapi, enabling **10+ non-technical stakeholders** to manage content independently
Created an automated CI/CD pipeline with code analysis and alerts, adding guardrails that reduced regressions and increased release confidence
Conducted thorough code reviews for team members, providing insights to maintain high code quality and best practices
Identified and reported multiple security issues that were later fixed, improving application security posture
Built **5+ Single Page Applications** and cross-platform mobile apps for diverse clients, including task management systems with timezone-based notifications
Developed internal tools for task and resource tracking using React, improving team responsiveness to work queues and review requests
Created a church mobile app with React Native managing **500+ monthly events**, and built a smart bakery order picking application
Integrated Google Maps API to calculate rural land taxes (soil, corn, beans) based on soil type and regulations for a tax calculation product
Built a Discord bot tracking merge requests and review status, improving visibility and prompting timely reviews