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rafaelvieiras

Rafael Vieiras

@rafaelvieiras

Senior Front End Engineer React and Angular Performance Code Review

Brazil
Portuguese
About me
I’m a senior front-end engineer (React, Next.js, Angular) focused on fast, high-quality deliveries: bug fixes, responsive/layout adjustments, Figma→code, isolated components, Core Web Vitals optimization, code review and short technical mentoring. I deliver readable code, clear scope and measurable impact for B2B/SaaS products. For accurate price and ETA, please contact me before ordering — I’ll confirm scope and the fastest delivery option.... Read more

Skills

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rafaelvieiras
Rafael Vieiras
Offline • 
Average response time: 9 hours

See my services

Bug Fixes
I will fix HTML CSS javascript or react bugs in 1 day
From$25 / projectMore details
AI Integrations
I will build a custom ai agent with rag for your business database
From$150 / projectMore details

Work experience

Senior Front End Engineer and Technical Consultant

Independent Consultant • Freelance

Jan 2008 - Present • 18 yrs 4 mos

Senior front end engineer with over 15 years of experience building, refactoring and scaling web applications. Worked on B2B and SaaS products with a strong focus on React and Angular. Specialized in fixing complex UI bugs, improving performance, refactoring legacy code, creating reusable components and applying scalable front end architecture. Experienced in design systems, micro front ends, dashboards and data driven interfaces. Delivers clear communication, well structured code and fast, reliable results.

Senior Front End Engineer

B2B SaaS Company • Full-time

Mar 2024 - Dec 2025 • 1 yr 9 mos

Worked as a senior front end engineer on large B2B web applications. Led refactoring of the core product, improving code organization, scalability and long term maintainability. Implemented micro front end architecture, reusable shared packages and the technical foundation of a design system. Delivered performance improvements including over 30 percent reduction in initial load time. Collaborated closely with product and engineering teams, reviewing code and improving development processes.