Senior UI Engineer - React + Gen AI for Scalable Web Apps

Ethereum Technologies LLC; Austin, Northern (TX, KY); Hybrid; USD 150,000 - 190,000; Full time

Job summary

Ethereum Technologies LLC is seeking a senior frontend engineer to design and implement dynamic user interfaces using React.js, HTML, CSS, and TypeScript. The role emphasizes collaboration within a large development team, adherence to best practices across the Software Development Life Cycle, and strong skills in performance optimization and modern web technologies.

The ideal candidate has hands-on experience delivering systems, testing, and ensuring operational stability, with a focus on memory

Qualifications

• Formal training or certification on software engineering concepts.
• 10+ years applied experience.
• Hands-on frontend development with React.js.
• Deep expertise of HTML, CSS, JS, React, Typescript, and state management.
• Experience working on a large team of developers.
• Proficiency across the Software Development Life Cycle and Agile practices.
• Advanced understanding of agile methodologies such as Application Resiliency and Security.
• Hands-on experience delivering system design, application development, testing, and operational stability.
• Solid understanding of memory and performance bottlenecks debugging.
• Knowledge of Generative AI and cutting-edge web technologies.
• Proficient with CLI, git workflow, and CI/CD.
• Hands-on with Jest / Vitest and React Testing Library.

Responsibilities

• Collaborate effectively in a team to contribute technically and communicate clearly.
• Deliver high-quality frontend components and UI using React.
• Contribute to code reviews and testing to maintain stability.
• Work across the SDLC with Agile methodologies and best practices.
• Address memory and performance bottlenecks to optimize applications.

Skills

Application Design

Frontend Development

React.js

HTML/CSS/JS

Typescript

Team Collaboration

SDLC & Agile

CI/CD

Jest/Vitest

Education

Software Engineering Certification

10+ years experience

Tools

Jest

Vitest

React Testing Library

Git & CLI

CI/CD Pipelines

Job description

Ethereum Technologies LLC is seeking a senior frontend engineer to design and implement dynamic user interfaces using React.js, HTML, CSS, and TypeScript. The role emphasizes collaboration within a large development team, adherence to best practices across the Software Development Life Cycle, and strong skills in performance optimization and modern web technologies.

The ideal candidate has hands-on experience delivering systems, testing, and ensuring operational stability, with a focus on memory