Frontend Product Engineer, Rails and Node

full-time

Posted on: 9/21/2025

Origin: • 🇧🇷 Brazil

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Mid-LevelSenior

BootstrapDockerJavaScriptJestjQueryKubernetesNode.jsReactRubyRuby on RailsTypeScriptWebpack

About the role

Lead frontend development across multiple Ruby on Rails and Node.js applications.
Develop and maintain frontends using JavaScript/TypeScript, React, Web Components, and Bootstrap.
Build and maintain a design system for consistent components, typography, and styling.
Improve Core Web Vitals, implement SEO changes, and run A/B tests to boost conversions.
Replace outdated technologies with modern frameworks and modernize legacy code.
Write unit tests with Jest and maintain high code quality standards.
Collaborate closely with a product team (4 developers, QA, DevOps), lead engineer, and backend developers to deliver features.
Deliver features that impact millions of visitors and iterate based on analytics.

Mid-to-senior frontend developer level (experience level indicated as mid-to-senior).
Strong frontend development skills with solid JavaScript and TypeScript experience.
Experience with React, Web Components, Bootstrap.
Experience working with design systems and building reusable components.
UX mindset with an eye for design.
Comfortable working with and improving legacy code (Backbone, jQuery, Bootstrap).
Comfortable working with Ruby on Rails and Node.js; able to perform light backend tasks (controllers, serializers).
Experience writing unit tests with Jest.
Curious about analytics and data-driven design decisions.
Familiarity with Docker and Kubernetes is a plus.
Familiarity with VideoJS, Backbone, jQuery, Vite, Webpack, GitHub, Slack, JIRA, Notion.