KWKey Yu Wan
@keyyuwan
Frontend Engineer with expertise in scalable web applications.
BrazilWhat I'm looking for
I am a Frontend Engineer with a strong background in building scalable and high-performance frontend applications for fintechs, startups, and digital products. My collaborative nature and strong communication skills enable me to adapt quickly and solve complex challenges in fast-paced environments.
At Nexus Software Development, I optimized internal workflows by 30x through a custom software tool and improved delivery speed by 50% after refactoring a legacy JavaScript project using TypeScript. My experience at Technico involved achieving a 97% reduction in budgeting time and increasing team productivity by 13x by centralizing workflows in a custom platform. I am passionate about creating efficient solutions that enhance user experience and operational efficiency.
Experience
Work history, roles, and key accomplishments
Frontend Engineer
Nexus Software Development
Sep 2024 - Apr 2025 (7 months)
Optimized internal workflows by 30x by designing and implementing a custom software tool using React and Material UI. Increased delivery speed by 50% after refactoring a legacy JavaScript project using TypeScript. Improved UX and app performance by 90% by using React Tankstack Query for caching and data-fetching.
Frontend Engineer
Technico
Aug 2024 - Feb 2025 (6 months)
Achieved a 97% reduction in budgeting time by designing and implementing custom software with React. Increased team productivity by 13x by centralizing company workflows in a custom platform built with React and TypeScript. Reduced scheduling time by 75% by creating a scheduling tool.
Frontend Engineer
Agência Really
May 2024 - Aug 2024 (3 months)
Developed a high-visibility annual report website for a hospital using React and Next.js, focusing on responsive design and performance. Accelerated operational efficiency by 15x by automating WhatsApp client notifications using Node.js and TypeScript.
Frontend Engineer
Dorper Brasil Tecnologia LTDA
Apr 2021 - May 2024 (3 years 1 month)
Improved SEO ranking up to 50% after migrating the platform from React CRA to Next.js. Delivered 100% coverage of critical integrations by integrating 3rd party APIs like real-time chat, payments, and email delivery. Reduced API build time by 76% by refactoring legacy code and optimizing the project structure.
Education
Degrees, certifications, and relevant coursework
Rocketseat Bootcamp
Certification, Fullstack Development (ReactJS & Node.js)
2021 - 2023
Completed a comprehensive fullstack development bootcamp focusing on ReactJS and Node.js. Gained practical experience in building both frontend and backend applications.
Tech stack
Software and tools used professionally
Availability
Location
BrazilAuthorized to work in
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