Senior React UI Engineer - Scalable Components

Ethereum Technologies LLC; Austin (TX); On-site; USD 120,000 - 160,000; Full time

Job summary

ETHEREUM TECHNOLOGIES LLC in Austin, TX is seeking a senior UI/Front-End Developer to build scalable React applications, deliver reusable components, and collaborate with designers and backend engineers to ship high‑quality UI.

You will implement React Hooks, manage state with Redux/Context, integrate REST/GraphQL services, optimize performance, and enforce security and testing standards with Jest and modern tooling.

Qualifications

• 8–10 years of hands-on experience in UI / Front-End Development.
• Advanced experience with React.js, React Hooks, Redux, Flux, and component-based architecture.
• Experience with Webpack, Enzyme, and front-end build/testing tools.
• Familiarity with REST APIs, GraphQL, and third-party service integration.
• Awareness of front-end security practices (CSP, XSS prevention).
• Hands-on experience writing unit tests and maintaining high test coverage.
• Excellent problem-solving, communication, and collaboration skills.

Responsibilities

• Build reusable, scalable React components following best practices.
• Implement React Hooks, state management, and lifecycle methods.
• Integrate RESTful APIs and GraphQL services.
• Use Webpack, Enzyme, Redux, and Flux in the workflow.
• Work on performance tuning, code splitting, and rendering optimizations.
• Follow front-end security best practices to ensure secure UI development.
• Develop and maintain unit tests using Jest, React Testing Library, or similar frameworks.
• Collaborate closely with designers, backend engineers, and product managers to deliver high-quality UI.
• Debug, troubleshoot, and resolve UI/UX issues across the application.
• Stay updated with the latest React updates, patterns, and industry best practices.
• Work with version control tools like Git/GitHub for code management.

Skills

UI / Front-End Development

React.js

React Hooks

Redux

Flux

REST APIs

GraphQL

Webpack

Enzyme

Unit tests

Jest

Git / GitHub

Tools

Webpack

Enzyme

Redux

Flux

Git/GitHub

Job description

ETHEREUM TECHNOLOGIES LLC in Austin, TX is seeking a senior UI/Front-End Developer to build scalable React applications, deliver reusable components, and collaborate with designers and backend engineers to ship high‑quality UI.

You will implement React Hooks, manage state with Redux/Context, integrate REST/GraphQL services, optimize performance, and enforce security and testing standards with Jest and modern tooling.