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UPX

2023 — 2026 — Performance, SEO & i18n
  • React
  • Next.js
  • TypeScript
  • REST
  • Jest
  • Vitest
  • Playwright
Role
Senior Frontend Software Engineer
Company
UPX
Period
2023 — 2026

Frontend architecture for enterprise web applications, with a focus on Core Web Vitals, technical SEO and multi-language routing.

Context

Enterprise web applications that need to be fast, discoverable in search and available in multiple languages, built and shipped together with product, design and backend teams.

What I did

  • Led frontend architecture decisions, including component design and design systems.
  • Optimized Web Performance and Core Web Vitals, improving Lighthouse metrics and load times.
  • Implemented technical SEO strategies, including dynamic metadata and canonical optimization.
  • Designed and implemented multi-language (i18n) architectures with dynamic routing.
  • Developed automated tests with Jest, Vitest and Playwright, and managed deployments through CI/CD pipelines.

Key decisions

  1. 01

    Code splitting and lazy loading

    Applied code splitting, lazy loading and bundle optimization so each page ships only the code it needs.

  2. 02

    Dynamic metadata and canonicals

    Generated metadata per page and optimized canonical URLs as part of the technical SEO strategy.

  3. 03

    i18n with dynamic routing

    Structured multi-language support around dynamic routes, so each language is served from its own URLs.

Results

better Lighthouse metrics and load times
CWV
dynamic metadata and canonical strategy
SEO
multi-language architecture with dynamic routing
i18n
Next Project

Webmotors

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© 2026 Lucas Pazzim