Building scalable web applications, reusable UI systems and modern developer experiences.

I'm a Senior Frontend Engineer from Brazil with 7+ years of experience building modern web applications for media, finance, and enterprise products.

I enjoy solving complex frontend problems through clean architecture, reusable components, and performance-focused solutions. I've worked with distributed teams across Brazil and the US, collaborating closely with designers, product managers, and backend engineers.

Besides product development, I enjoy creating Proofs of Concept (POCs), exploring new technologies, and sharing knowledge through mentoring and technical presentations.

Currently interested in:

• ⚛️ React ecosystem
• 🚀 Next.js & modern frontend architecture
• 🎨 Design Systems & Storybook
• ⚡ Web Performance & Accessibility
• 🤖 AI-assisted software development (Codex, Claude Code, Copilot)
• 🧩 Developer Experience

• React
• Next.js
• TypeScript
• JavaScript (ES6+)
• Tailwind CSS
• Styled Components
• HTML5
• CSS3
• Storybook
• Redux / Zustand
• GraphQL
• React Query

• Node.js
• Express
• REST APIs
• GraphQL
• PostgreSQL
• MySQL
• MongoDB

• Git
• Docker
• CI/CD
• NX
• Vite
• Figma
• Jest
• React Testing Library
• Vitest
• Playwright

• OpenAI Codex
• Claude Code
• GitHub Copilot
• Cursor

Most repositories are focused on learning and experimentation.

Topics include:

• React & Next.js
• Frontend Architecture
• Design Systems
• Performance
• Testing
• Data Structures & Algorithms
• AI Engineering
• Proofs of Concept (POCs)

📧 lucasbritesxavier2010@gmail.com

💼 LinkedIn https://linkedin.com/in/lcxavier

🌎 Always interested in discussing frontend engineering, architecture, AI tooling, and challenging product problems.