Frontend UI Developer: React/Angular, Responsive UI

Ethereum Technologies; Philadelphia (Philadelphia County); On-site; USD 90,000 - 120,000; Full time

Job summary

Ethereum Technologies seeks a front-end developer to translate design concepts into high-quality interfaces. You will build reusable UI components, create SPAs with React or Angular, and ensure accessibility and performance across devices.

Join a collaborative team that integrates with backend services, optimizes rendering, and ships polished user experiences in an Agile setting. This role emphasizes modern tooling like Bootstrap, MUI, Tailwind, and Vite.

Qualifications

• Proven front-end development experience with modern JS frameworks.
• Experience turning UI/UX designs into functional, accessible UI.
• Strong knowledge of REST APIs and JSON data handling.

Responsibilities

• Build reusable UI components and front-end modules.
• Develop SPAs using React.js, Angular, or Vue.js.
• Convert Figma/Adobe XD designs into interfaces.
• Implement responsive layouts with CSS Grid/Flexbox/Bootstrap.
• Integrate RESTful APIs and backend services into UIs.
• Optimize performance, rendering, and loading times.
• Manage state with Redux/Context API or NgRx.
• Follow accessibility standards and UI best practices.
• Perform debugging, unit testing, and code reviews.
• Collaborate with UX, backend, and product teams.

Skills

React.js

Angular

Responsive design

REST APIs

JSON

Git / GitHub

Jest

Tools

Bootstrap

Material UI

Tailwind CSS

Webpack

Vite

npm

Job description

Ethereum Technologies seeks a front-end developer to translate design concepts into high-quality interfaces. You will build reusable UI components, create SPAs with React or Angular, and ensure accessibility and performance across devices.

Join a collaborative team that integrates with backend services, optimizes rendering, and ships polished user experiences in an Agile setting. This role emphasizes modern tooling like Bootstrap, MUI, Tailwind, and Vite.