Frontend Engineer

Evlo AI; Seattle (WA); On-site; USD 120,000 - 180,000; Full time

Job summary

Evlo AI is seeking an experienced frontend engineer to own the architecture, development, and scaling of high-performance web interfaces used by millions daily. You’ll collaborate with product and UX teams to ship accessible, resilient client-side systems with superb user experience.

The role emphasizes React/Next.js, design systems, and performance tuning to ensure sub-second first impressions across devices. A Bachelor’s degree and strong React ecosystem knowledge are preferred.

Qualifications

• 3–6 years of professional frontend development experience.
• Expert JavaScript/TypeScript, HTML5, CSS3, and modern CSS frameworks.
• Experience with React ecosystem, SSR, and accessibility (WCAG).

Responsibilities

• Build responsive, high-performance web applications using React and Next.js.
• Design scalable component libraries, design systems, and client-side state management architectures.
• Optimize application performance, bundle sizes, and Core Web Vitals for sub-second load times.
• Integrate frontend services with REST and GraphQL APIs, with caching and offline capabilities.
• Write automated tests using Jest, React Testing Library, and Cypress with high coverage.
• Participate in code reviews, mentor junior engineers, and contribute to frontend architectural best practices.

Skills

JavaScript

TypeScript

Web performance

Accessibility WCAG

Code reviews

Education

Bachelor's degree in Computer Science

Tools

React

Next.js

Tailwind CSS

Styled Components

Jest

Cypress

GraphQL

Job description

About The Role

The role owns the architecture, development, and scaling of high-performance user interfaces and web applications serving millions of users daily.

The role owns the architecture, development, and scaling of high-performance user interfaces and web applications serving millions of users daily.

The engineering team works closely with product managers and UX designers to build responsive, accessible, and resilient client-side systems where performance and user experience matter equally.

Key Responsibilities

• Build responsive, high-performance web applications using modern JavaScript/TypeScript, React, and Next.js
• Design and implement scalable component libraries, design systems, and client-side state management architectures
• Optimize application performance, bundle sizes, and Core Web Vitals to ensure sub-second load times across all devices
• Integrate frontend services with REST and GraphQL APIs, implementing robust caching, error handling, and offline capabilities
• Write comprehensive automated tests using Jest, React Testing Library, and Cypress; maintain high test coverage standards
• Participate in code reviews, mentor junior engineers, and contribute to frontend architectural best practices

What We Are Looking For

• 3–6 years of professional software engineering experience with a strong focus on modern frontend development
• Expert-level proficiency in JavaScript, TypeScript, HTML5, CSS3, and modern CSS frameworks (Tailwind CSS, Styled Components)
• Deep production experience with React ecosystem tools, state management libraries, and server-side rendering frameworks
• Solid understanding of web accessibility (WCAG standards), cross-browser compatibility, and frontend security best practices
• Bachelor's degree in Computer Science or equivalent practical experience in building user-facing software
• Bonus: Experience with mobile development (React Native), GraphQL schema design, or WebAssembly