Senior Software Engineer focused on React, React Native and scalable architectures.

I build high-performance applications for fintechs and healthtechs, working across frontend, mobile and backend with strong focus on performance, scalability and system design.

• Senior Software Engineer with +10 years of experience
• Strong expertise in React, Next.js and React Native
• Experience building high-availability systems in fintech and healthtech
• Focus on performance optimization (Core Web Vitals, rendering, scalability)
• Experience with micro-frontends, BFF and microservices architecture
• Working with AI integrations (LLMs) and modern SaaS platforms
• Background in mentoring and technical decision-making

• React.js, Next.js
• React Native (iOS & Android)
• TypeScript, JavaScript (ES6+)
• Tailwind, Styled Components

• Node.js (Fastify, Express)
• GraphQL, REST APIs

• Micro-frontends
• BFF (Backend for Frontend)
• Microservices

• PostgreSQL, MongoDB, MySQL, Redis

• AWS (Lambda, EC2, S3, Cognito)
• Docker, CI/CD (GitHub Actions)
• Vercel, Netlify

• Performance Optimization
• Design Systems
• AI (LLMs, automation)

• Building scalable and maintainable architectures
• Improving frontend performance and user experience
• Creating reusable and consistent Design Systems
• Delivering end-to-end SaaS platforms
• Solving complex problems in high-scale environments

⭐️ From ruandersonvieira