Willian Rodrigues
About
Detail
Paraná, Brazil
Contact Willian regarding:
Flexible work
Starting at
USD50/hour
Résumé
Jobs
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Frontend Engineer (Lead)ClaimAngelJun 2023 - Feb 2026 (2 years 9 months)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 Al 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 Al assistants (GitHub Copilot, Clau- RFrontend EngineerRising Orchards, LLC (IgorBox)Jun 2023 - Jan 2026 (2 years 8 months)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. Tech: React, WebSockets, T
- Frontend EngineerYahoo!Jan 2023 - Jun 2023 (6 months)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%. Tech: React, Redux, TypeScript, JavaScript, HTML, CSS, Alt.js, Webpack, Sass
- SFrontend Web DeveloperSpin (Ford Motor Company)May 2022 - Oct 2022 (6 months)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. Tech: React, Ruby on Rails, TypeScript, JavaScript, HTML, CSS, Mapbox GL, Webpack
- CFrontend DeveloperCWI Software (GPA Pão de Açúcar)Jan 2022 - May 2022 (5 months)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%. Tech: React, Next.js, React Native, Redux, Recoil, JavaScript, HTML, CSS, Webpack
- GFull-stack DeveloperGazin TechNov 2020 - Dec 2021 (1 year 2 months)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. Tech: Next.js, React Native, NestJS, Strapi, Postg
- SFull-stack DeveloperSmarppyNov 2018 - Oct 2020 (2 years)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. Tech: React, React Native, Node.js, MySQL, RethinkDB, JavaScript, HTML, CSS
Education
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- UB.S. Computer Science (Bacharelado em Ciência da Computação)Universidade Tecnológica Federal do Paraná (UTFPR)Jan 2017 - Jan 2021 (4 years 1 month)