Branndon Arruda
São Paulo
Summary
Dynamic Frontend Engineer with over 14 years of experience in developing scalable web products that positively impact millions globally. Proficient in React, Next, TypeScript, and Node.js, with a strong emphasis on performance optimization and maintainability. Proven track record of delivering large-scale applications for industry leaders such as Mercado Livre, Vivo, and Banco Pan. Eager to embrace remote opportunities with international companies, driven by a passion for scalable architecture and fostering technical leadership.
Overview
14
14
years of professional experience
1
1
Certification
Work History
Software Engineer
Mercado Livre Brasil
São Paulo, Brazil
12.2022 - Current
- Developed and maintained a large-scale internal invoicing platform for the Tax team, supporting financial operations for millions of transactions across Latin America
- Architected frontend solutions using Clean Architecture principles, improving scalability, maintainability, and long-term developer experience
- Implemented comprehensive test coverage using Jest, Enzyme, and React Testing Library, reducing production bug rates and increasing deployment confidence
- Set up observability infrastructure with Datadog, New Relic, Kibana, and Grafana, enabling proactive monitoring and faster incident response across the team
- Streamlined release cycles by managing deployments through CI/CD pipelines using Jenkins and adopting Git flow branching strategies
- Contributed to technical refinements and architecture decisions, collaborating with cross-functional teams of engineers, designers, and product managers
- Stack: React, Next.js, TypeScript, Jest, React Testing Library, Enzyme, Sass, CSS3, HTML5, Figma, Jenkins, Datadog, New Relic, Kibana, Grafana
Software Engineer
Remessa Online
São Paulo, Brazil
08.2022 - 11.2022
- Developed and launched a redesigned Help Center (FAQ) using WordPress, improving self-service support experience for thousands of customers across Brazil.
- Built responsive, high-performance interfaces with HTML5, Sass, and Docker, ensuring consistent delivery across environments.
- Stack: React, TypeScript, WordPress, Docker, Pagely, Jest, Sass, CSS3, HTML5, Figma
Senior Software Engineer
Facily
São Paulo, São Paulo, Brasil
10.2021 - 07.2022
- Architected and built the new frontend base project using Vue.js, establishing standards and best practices adopted by the entire engineering team
- Developed a full-featured Seller Panel web application, improving the experience for thousands of marketplace sellers
- Translated Figma designs into pixel-perfect, responsive interfaces with a focus on performance and usability
- Ensured code quality through test plans and unit testing with Jest.
- Stack: Vue.js, Vuex, Nuxt.js, React, TypeScript, Jest, AWS, Sass, CSS3, HTML5, Figma
Senior Software Engineer
Vivo (Telefônica Brasil)
São Paulo, Brasil
12.2019 - 10.2021
- Led the planning and development of a new Design System from scratch, enabling consistent UI across multiple products used by millions of Vivo customers
- Built the new frontend base architecture using Vue.js, improving scalability and developer productivity across teams
- Established testing standards with Jest, increasing deployment confidence and reducing regression bugs
- Applied Atomic Design methodology to create reusable component libraries, accelerating feature delivery.
- Stack: Vue.js, Vuex, Nuxt.js, React, TypeScript, Jest, AWS, Atomic Design, SonarLint, Zeplin, Sass, CSS3, HTML5
Software Engineer
iCarros
São Paulo e Região, Brasil
06.2019 - 12.2019
- Built a new Design System from scratch using React and Storybook, standardizing UI components and accelerating feature delivery across product teams
- Developed the new auto insurance quote flow for Porto Seguro, one of Brazil's largest insurers, improving conversion for thousands of users
- Ensured code quality and reliability through comprehensive test plans and unit testing with Jest and Enzyme.
- Stack: React, Redux, Storybook, Jest, Enzyme, AWS, Sass, CSS3, HTML5, Zeplin
Software Engineer
Banco PAN
São Paulo e Região, Brasil
03.2018 - 05.2019
- Developed the end-to-end credit card contracting flow using Angular 6, directly impacting the digital acquisition of thousands of new customers monthly
- Built a new institutional website from scratch with HTML5, CSS3 and JavaScript, modernizing the bank’s digital presence for millions of visitors
- Led a major UI overhaul of a legacy AngularJS web application, improving usability and visual consistency across the platform.
- Stack: Angular 6, AngularJS, TypeScript, Jest, Sass, CSS3, HTML5, Zeplin, Mobile First
Software Engineer
Dívea
São Paulo e Região, Brasil
07.2017 - 06.2018
- Developed new web projects using WordPress, optimized for SEO and mobile responsiveness with Bootstrap. Maintained and evolved existing projects by adding new features and updating content through the CMS based on client demand.
- Built and delivered responsive, SEO-optimized websites using WordPress and Bootstrap, ensuring consistent performance across devices.
- Evolved existing projects with new features and content updates driven by client requirements via CMS.
- Contributed to the Zen Web App project, extending an in-progress JavaScript/jQuery application with Angular-like architecture (controllers, states, and promises), with all content served via Firebase.
- Stack: jQuery, Vanilla JS, Sass, CSS3, HTML5, Firebase, WordPress, Bootstrap
Software Engineer
YBOH
Santos, SP
09.2015 - 08.2017
- Responsible for developing and evolving mobile/tablet applications for Mercedes-Benz, using the Ionic framework for hybrid development with AngularJS — including controllers, services, directives, and views.
- Developed and maintained institutional websites using HTML5, CSS3, and Bootstrap, working with both custom builds and WordPress-based platforms.
- Stack: Ionic, AngularJS, WordPress, Bootstrap, Vanilla JS, Sass, CSS3, HTML5.
Software Engineer
Coletiva Web Agência Interativa
Praia Grande
06.2014 - 09.2015
- Build a lot of websites with WordPress and PHP;
- Maintenance of existing projects.
- Stack: Wordpress, Bootstrap, jQuery, Vanilla, CSS3 e HTML5.
Software Engineer
Mkt Virtual
Santos, SP
12.2011 - 02.2014
- Worked as a Web Developer at Grou (After-Sales Department), responsible for building and maintaining marketing emails, HTML5/Flash banners, landing pages, and CMS-driven content updates across multiple client projects.
- Built and delivered responsive landing pages for seasonal campaigns (Mother's Day, Father's Day, Christmas) and managed product listings on CMS for Mahogany.
- Stack: WordPress, Bootstrap, jQuery, Flash, CakePHP, Vanilla JS, CSS3, HTML5.
Education
English Language Program -
Stafford House International
London - UK - England08-2024
Bachelor's Degree - Computer Engineering
ESAMC
São Paulo - SP, Brazil01-2017
Skills
- React
- Next
- SSR (Server-Side Rendering)
- Programming languages
- Web application development
- Javascript
Certification
- IOS Layout Part 1: Getting Started with Responsive Screens
- Productivity and Time Management
- Continuous Integration: More Quality and Less Risk in Development
- Swift Part 1: Developing for iOS in Xcode
- React: Understanding How the Library Works
Languages
Português (Native or Bilingual)
Inglês (Professional Working)
Timeline
Software Engineer
Mercado Livre Brasil
12.2022 - Current
Software Engineer
Remessa Online
08.2022 - 11.2022
Senior Software Engineer
Facily
10.2021 - 07.2022
Senior Software Engineer
Vivo (Telefônica Brasil)
12.2019 - 10.2021
Software Engineer
iCarros
06.2019 - 12.2019
Software Engineer
Banco PAN
03.2018 - 05.2019
Software Engineer
Dívea
07.2017 - 06.2018
Software Engineer
YBOH
09.2015 - 08.2017
Software Engineer
Coletiva Web Agência Interativa
06.2014 - 09.2015
Software Engineer
Mkt Virtual
12.2011 - 02.2014
English Language Program -
Stafford House International
Bachelor's Degree - Computer Engineering
ESAMC