Senior UI Engineer - React/Angular, Mentorship

Ethereum Technologies; Seattle (WA); On-site; USD 140,000 - 180,000; Full time

Job summary

Ethereum Technologies is seeking an experienced frontend engineer to design, develop, and maintain responsive web applications. You will build reusable UI components and collaborate with UX/UI designers, backend developers, and business teams to deliver high‑quality features.

The role requires strong expertise in React or Angular, REST APIs, and modern frontend tooling. You will participate in Agile ceremonies, perform code reviews, and mentor junior developers while helping to raise the team's

Qualifications

• 12+ years of UI/frontend development experience.
• Hands-on React.js or Angular experience.
• Proficient in responsive design and CSS frameworks.
• Strong knowledge of REST APIs and JSON.
• Experience with Redux, Context API, and NgRx.
• Understanding of UI architecture and reusable components.
• Experience with Git, Jenkins, and CI/CD pipelines.
• Strong debugging and problem-solving skills.

Responsibilities

• Design, develop, and maintain responsive and scalable web applications.
• Develop reusable UI components and frontend libraries.
• Collaborate with UX/UI designers, backend developers, and business teams.
• Integrate frontend applications with RESTful APIs and backend services.
• Optimize application performance, scalability, and page load times.
• Implement state management solutions such as Redux, Context API, or NgRx.
• Perform code reviews, debugging, and unit testing.
• Follow frontend development best practices and coding standards.
• Mentor junior developers and provide technical guidance.
• Participate in Agile/Scrum ceremonies and sprint planning.

Skills

Frontend Dev

React/Angular

Responsive Design

REST APIs

Redux

Context API

NgRx

Git CI/CD

Unit Testing

Tools

Git

Jenkins

CI/CD tooling

Job description

Ethereum Technologies is seeking an experienced frontend engineer to design, develop, and maintain responsive web applications. You will build reusable UI components and collaborate with UX/UI designers, backend developers, and business teams to deliver high‑quality features.

The role requires strong expertise in React or Angular, REST APIs, and modern frontend tooling. You will participate in Agile ceremonies, perform code reviews, and mentor junior developers while helping to raise the team's