arthr.dev front-end developer

Arthur Freitas

Front-end developer focused on accessibility, semantics, interaction, and animation (and maintenance).

Currently a Website Engineer at ABC Fitness. Based in Porto Alegre, RS, Brazil.

Bio

I’ve been writing HTML, CSS, and JavaScript professionally since 2010: for agencies, e-commerce companies, and big brands, from WordPress themes and online stores to design systems and content portals.

Experience

  1. to present

    Website Engineer

    at ABC Fitness

    I develop the company’s marketing websites and manage our code versioning and publishing workflows. My current focus is on modernizing the codebase that manages and delivers the site to visitors, and building a rich-content creation workflow for our content team.

  2. to

    Front-end Developer

    at Compasso / UOL

    As an embedded front-end developer, I architected and built the interface for Pfizer’s content portal, Cuidamos Juntos; helped modernize the codebase for Camicado’s redesign using Web Components; built and maintained design systems for companies such as Grendene and Dass; and developed projects for other clients including Yamaha, Furukawa, and Sicredi.

  3. to

    Front-end Developer

    at Vnda e-commerce

    I led the customer success team, creating testing workflows, troubleshooting issues, and building new features for our clients’ online stores. I also created internal workflows to help our team ship code more safely and quickly.

  4. to editions

    Webmaster

    at Porto Alegre Book Fair

    I worked with the team behind the largest open-air book fair in Latin America to improve the fair’s website and enable organizers to manage events directly through the site, integrating schedules and maps.

  5. to

    WordPress Developer

    at Farol Estúdio

    I developed themes and plugins and managed our clients’ WordPress multisite network, keeping every site updated and secure within a single infrastructure and reducing our need to access multiple panels or file systems.

  6. to

    Front-end Developer

    at EGBR

    My first job right out of school. As an intern, I built mini-sites and landing pages for EGBR’s e-commerce clients, and later joined the maintenance team, finding and fixing bugs and adding new features to our clients’ websites.

Skills & technologies

HTML

  • Semantic DOM structuring
  • Accessibility best practices
  • Static site generators / JAMstack

CSS

  • Modern features (layers, color manipulation, grids, etc.)
  • Efficient animation techniques
  • Advanced Sass/SCSS, Tailwind
  • Coding standards for large-scale maintenance and design systems
  • CSS methodologies (BEM, SMACSS, inuit, etc.)

JavaScript

  • Frameworks: Astro, Next.js, React, Vue, Svelte
  • Build pipelines: Parcel, Gulp, Webpack, etc.

Tools

Agentic coding
Claude Code (and Superpowers), Cursor, GitHub Copilot
CMS
WordPress, Drupal, MediaWiki, October, Magento, Shopify
Version control
Git, SVN
Project management
Jira, Trello, Basecamp

Education & languages

Education

  • Bachelor’s degree in Social Communication Unisinos,
  • Technical degree in Information Technology Federal Institute of Rio Grande do Sul,

Languages

  • Portuguese native
  • English advanced
  • French intermediate