FrontEnd Engineer | Onsite | Sunnyvale, California
At a glance
Mid-level Frontend Engineering role at Fa Ertb Saasfaprod1. United States · full-time · $65,000–$165,000 base.
techroles summary, based on the employer's posting.
What you'll do
- Build responsive web interfaces with HTML, CSS and React, keeping them accessible and consistent across browsers
- Connect front-end features to REST services, handling authentication and CORS, and add real-time behavior with WebSockets
- Improve page speed against Core Web Vitals and create reusable components from the shared design system
- Use Node.js tools for builds and bundling, then review code and work with QA on testability
What you bring
- At least five years of front-end development experience
- Strong command of HTML, CSS and JavaScript or TypeScript, with production work in React
- Working familiarity with Angular, plus experience connecting APIs, handling CORS and using WebSockets
- Practical knowledge of web performance measures and experience with a design system or component library
Who this fits
This role suits a mid-level front-end engineer who has shipped React interfaces and can work with designers, back-end teams and QA. The title calls for on-site work in Sunnyvale, California.
From the employer
Role Overview
We are hiring Front-End Engineers to build fast, accessible, and consistent user experiences. You will work closely with designers and back-end teams to deliver polished interfaces backed by a shared design system.
Key Responsibilities
- Build and maintain responsive web interfaces using HTML, CSS, and React (Angular experience is also valued).
- Integrate front-end applications with back-end services and REST APIs, handling CORS and authentication flows correctly.
- Implement real-time features using WebSockets.
- Optimize performance and meet Core Web Vitals targets (LCP, INP, CLS).
- Contribute to and consume the company design system, building reusable, well-documented components.
- Use Node.js tooling for builds, bundling, and lightweight services.
- Ensure accessibility, cross-browser compatibility, and responsive behavior.
- Participate in code reviews and collaborate with QA on testability.
Required Qualifications
- 5+ years of front-end development experience.
- Strong HTML5, CSS3, and JavaScript/TypeScript skills.
- Production experience with React; working knowledge of Angular.
- Experience with API integration, CORS, and WebSockets.
- Practical knowledge of web performance and Core Web Vitals.
- Experience working within a design system or component library.
Preferred Qualifications
- Experience with Node.js and modern build tooling.
- Knowledge of accessibility standards (WCAG).
- Experience with front-end testing frameworks.
Compensation, Benefits and Duration
Minimum Compensation: USD 65,000
Maximum Compensation: USD 165,000
Compensation is based on actual experience and qualifications of the candidate. The above is a reasonable and a good faith estimate for the role.
Medical, vision, and dental benefits, 401k retirement plan, variable pay/incentives, paid time off, and paid holidays are available for full time employees.
This position is available for independent contractors
No applications will be considered if received more than 120 days after the date of this post.
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