UI Engineer (React JS)

Ethereum Technologies LLC; Austin (TX); On-site; USD 110,000 - 140,000; Full time

Job summary

A technology solutions company based in Austin, Texas is seeking a Senior UI/Front-End Developer. The successful candidate will have 8–10 years of experience in UI development, with advanced proficiency in React.js, React Hooks, and Redux. Responsibilities include building scalable components, integrating APIs, and collaborating with cross-functional teams to enhance user experience. This role requires strong problem-solving and communication skills, along with a solid knowledge of front-end security practices.

Qualifications

• 8–10 years of hands-on experience in UI / Front-End Development.
• Advanced experience with React.js and component-based architecture.
• Hands-on experience in writing unit tests and maintaining test coverage.

Responsibilities

• Build reusable, scalable React components following best practices.
• Implement React Hooks and state management tools like Redux.
• Integrate RESTful APIs and GraphQL services.

Skills

UI / Front-End Development

React.js

React Hooks

Redux

GraphQL

Webpack

Enzyme

Unit Testing

Git/GitHub

Tools

Webpack

Enzyme

React Testing Library

Job description

Responsibilities

• Build reusable, scalable React components following best practices.
• Implement React Hooks, state management (Redux / Context API), and component lifecycle methods.
• Integrate and consume RESTful APIs and GraphQL services.
• Use React ecosystem tools such as Webpack, Enzyme, Redux, and Flux.
• Work on application 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.

Required Skills & Experience

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

ETHEREUM TECHNOLOGIES LLC is an equal opportunity employer inclusive of female, minority, disability and veterans, (M/F/D/V). Hiring, promotion, transfer, compensation, benefits, discipline, termination and all other employment decisions are made without regard to race, color, religion, sex, sexual orientation, gender identity, age, disability, national origin, citizenship/immigration status, veteran status or any other protected status. ETHEREUM TECHNOLOGIES LLC will not make any posting or employment decision that does not comply with applicable laws relating to labor and employment, equal opportunity, employment eligibility requirements or related matters. Nor will ETHEREUM TECHNOLOGIES LLC require in a posting or otherwise U.S. citizenship or lawful permanent residency in the U.S. as a condition of employment except as necessary to comply with law, regulation, executive order, or federal, state, or local government contract