Marcus Sá
Head De Produto E Tecnologia at Vakinha
Rio Grande do Sul, Brazil
Summary
👤
Senior🎓
Top SchoolMarcus Sá is a seasoned full-stack engineering leader with 15 years of experience, currently heading product and technology at Vakinha, Brazil's largest crowdfunding platform. He combines deep hands-on expertise in JavaScript and Ruby on Rails with modern front-end frameworks like React and Next.js, plus backend experience in Node, Express and PHP. As a former tech lead and long-term contributor to integrations that marry Rails and React, he brings practical knowledge of server-side rendering, performance tuning and frontend architecture. Based in Rio Grande do Sul, he pairs product-focused decision making with day-to-day engineering leadership, guiding teams from prototyping to production. Marcus is also investing in data and AI skills through postgraduate studies, signaling a move to more data-driven product strategy. Colleagues know him for balancing pragmatic engineering fixes (linting, propTypes, render optimizations) with strategic platform thinking.
15 years of coding experience
16 years of employment as a software developer
MBA em Tecnologia para Negócios: AI, Data Science e Big Data, Artificial Intelligence, MBA em Tecnologia para Negócios: AI, Data Science e Big Data, Artificial Intelligence at PUC-RSEstácio de Sá University
English
Stackoverflow
608reputation
30kreached
22answers
0questions
Github Skills (16)
webpack10
javascript10
webpacker10
react10
jsx10
rails9
ruby-rails9
lodash8
redux8
immutables7
react-router7
htmlhelpers6
fancybox6
jquery6
ruby6
Programming languages (5)
Github contributions (5)
shakacode/react-webpack-rails-tutorial
Dec 2015 - Jan 2016
Legacy full-app React on Rails tutorial repo and live demo. See reactonrails.com/examples for current maintained demos.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:13 commits, 7 PRs, 26 comments in 1 month
Contributions summary:Marcus focused on improving the React front-end components within the Rails application. They addressed linting issues, converted React callback bindings to use `_.bindAll`, and removed unnecessary bindings. The user also fixed a warning related to a required propType and introduced a pure render decorator for performance optimization. Additionally, the user updated the application to use the latest version of react-router and also modified server-side code related to comment ordering.
react-on-railsreactwebpackrailsruby-on-rails
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