Guilherme Santos

Senior Software Engineer at Kittl

Berlin, Germany
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Summary

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Rockstar
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Guilherme Santos is a front-end and UI-focused software engineer with 11 years of experience blending design sensibility and robust implementation to build polished web applications. Trained in Design at the Federal University of Technology - Paraná, he has translated user-centered principles into production interfaces across companies like Shopify, Contentful, FRIDAY Versicherung, and Kittl. He has maintained and contributed to open-source design systems (including work on Shopify’s Polaris and Contentful’s Forma 36), improving navigation, mobile interactions, and reusable UI components. Based in Berlin, he thrives in cross-functional teams and has led front-end efforts both remotely and on-site, including international collaboration in Montreal. Guilherme’s strength is turning design thinking into maintainable front-end architecture while staying hands-on with component-level details. He’s continually learning new tools and enjoys bridging the gap between visual design and engineering to create delightful user experiences.
code11 years of coding experience
job9 years of employment as a software developer
bookBachelor Degree in Design Design, Bachelor Degree in Design Design at Federal University of Technology - Parana
languagesPortuguese, English, French, German
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Github Skills (15)

typescript10
component-library10
typescripts10
carbon-design-system10
sys10
react10
typescript-types10
javascript9
nextjs9
responsive-design8
css8
html8
system-design8
system7
ui-design6

Programming languages (2)

TypeScriptJavaScript

Github contributions (5)

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Shopify/polaris

Jun 2022 - Oct 2022

Shopify’s design system to help us work together to build a great experience for all of our merchants.
Role in this project:
userFront-end Developer
Contributions:32 reviews, 12 commits, 10 PRs in 4 months
Contributions summary:Guilherme primarily focused on developing the front-end components and structure of the Polaris design system's website. Their work included adding a side menu for smaller screens, refactoring the header and navigation, and creating the mobile navigation with accordions. They also contributed to the design and implementation of UI elements such as buttons. These changes involved modifying existing components and creating new ones to enhance the user interface and overall navigation experience within the Polaris documentation site.
shopifymerchantsreactvscode-extensiongreat
gui-santos/personal-website

Dec 2018 - Jun 2021

2019 version of guisantos.com
Contributions:16 PRs, 36 pushes, 13 branches in 2 years 6 months
python
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Guilherme Santos - Senior Software Engineer at Kittl