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Gustavo Fonseca Email & Phone Number

Software Engineer | React.js | Next.js | TypeScript | Node.js at Valid
Location: São Paulo, São Paulo, Brazil 4 work roles 2 schools
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✓ Verified Jun 2026 3 data sources Profile completeness 86%

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Role
Software Engineer | React.js | Next.js | TypeScript | Node.js
Location
São Paulo, São Paulo, Brazil
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Who is Gustavo Fonseca? Overview

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Gustavo Fonseca is listed as Software Engineer | React.js | Next.js | TypeScript | Node.js at Valid, a company with 2179 employees, based in São Paulo, São Paulo, Brazil. AeroLeads shows a matched LinkedIn profile for Gustavo Fonseca.

Gustavo Fonseca previously worked as Software Engineer at Valid and Software Engineer at Tok&Stok. Gustavo Fonseca holds Bachelor from Mackenzie Presbyterian University.

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Valid

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Profile bio

About Gustavo Fonseca

Driven Frontend Engineer with 4+ years of experience in web development. I helped retailers boost online sales and improve customer experience through design systems, performance optimizations, and strategic SEO.Here are a few examples of my work:• Rebuilt the B2C e-commerce at Tok&Stok, enhancing performance and reducing errors, leading to a more seamless customer journey.• Contributed to the development of a shared design system at Grupo SBF for both Nike and Centauro e-commerce, streamlining workflow and boosting efficiency.• Built key features for Centauro website, including order cancellation and return functionality, directly resulting in reduced customer service calls and increased satisfaction.• Led the migration of some Centauro's pages from .NET to React, improving usability and performance.In my past experiences I've worked with:• React.js• Next.js• TypeScript• JavaScript• Node.js• CSS• HTML5• GraphQL• Unit Testing• Integration Testing• Playwright• Jest• Storybook• Design System• SEO• Google Analytics• Git• GitHubI thrive in collaborative settings and always look for opportunities to learn and contribute. My goal is to be in an environment where both the company and its employees mutually invest in growth and excellence.Reach out if you're interested in collaborating or just to connect!

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Gustavo Fonseca's current company

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Valid
Valid
Software Engineer | React.js | Next.js | TypeScript | Node.js
rio de janeiro, rio de janeiro, brazil
Website
Employees
2179
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4 roles

Gustavo Fonseca work experience

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Software Engineer

Current
Jun 2024 - Present

Software Engineer

São Paulo, Brazil

  • Tok&Stok is one of Brazil's largest furniture and home decor retailers, renowned for its contemporary designs and widespread presence nationwide.
  • Created a design system that standardized the e-commerce design, increasing developer productivity by 40%
  • Rebuilt the B2C e-commerce, increasing performance and reducing error occurrences
  • Actively participated in code reviews and provided constructive feedback, fostering a culture of knowledge sharing and continuous improvement.
  • Implemented a comprehensive SEO strategy incorporating on-page optimization, meta tag improvements, and clean URL structures, improving the organic search traffic.
Sep 2021 - Mar 2024

Software Engineer

Brasil

  • The Grupo SBF is a prominent retail conglomerate that owns major sportswear brands and operates a vast network of stores, including Centauro and Nike Brazil.
  • Contributed to the creation of a design system, which served both the Nike and Centauro e-commerces, increasing developer efficiency
  • Built features that enabled customers to cancel and return items directly from the Centauro's website, reducing customer service calls and increasing customer satisfaction
  • Rebuilt the voucher platform, order list, and order details of Centauro, all from.NET to React, making the platform easier to use and more performant
  • Presented to the Guild, introducing new technologies and suggesting improvements
  • Built the order, voucher, and attendance pages for Nike Brazil's e-commerce platform from scratch using Next.js, following the Figma prototypes
Jul 2020 - Sep 2021

Front-End Developer Intern

São Paulo E Região

Jan 2020 - Jul 2020
Team & coworkers

Colleagues at Valid

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2 education records

Gustavo Fonseca education

FAQ

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What company does Gustavo Fonseca work for?

Gustavo Fonseca works for Valid.

What is Gustavo Fonseca's role at Valid?

Gustavo Fonseca is listed as Software Engineer | React.js | Next.js | TypeScript | Node.js at Valid.

Where is Gustavo Fonseca based?

Gustavo Fonseca is based in São Paulo, São Paulo, Brazil while working with Valid.

What companies has Gustavo Fonseca worked for?

Gustavo Fonseca has worked for Valid, Tok&Stok, and Grupo Sbf.

Who are Gustavo Fonseca's colleagues at Valid?

Gustavo Fonseca's colleagues at Valid include Rodolfo Valentino Cassano, Polliane Batista Maciel, Maxi Cisneros, Aluizio Rodrigues, and Bruno Rodrigues.

How can I contact Gustavo Fonseca?

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What schools did Gustavo Fonseca attend?

Gustavo Fonseca holds Bachelor from Mackenzie Presbyterian University.

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