Senior Front-End Engineer: Performance & UX

Amazon Inc.; Redmond (WA); On-site; USD 144,000 - 194,000; Full time

Job summary

Amazon Inc. in Redmond, WA is seeking a Front End Engineer (L5) to design, develop, and deliver high-quality, accessible UI components for customer-facing experiences.

You will collaborate with product, UX, and backend teams to build scalable front-end solutions that perform at scale. The role emphasizes code quality, performance optimization, and leadership—mentoring juniors, driving best practices, and owning front-end health from development through on-call.

Qualifications

• 3+ years of professional front end development experience
• Experience with full SDLC, coding standards, architectures, code reviews, and CI/CD
• Experience with RESTful APIs, WebSocket, and asynchronous programming patterns
• AI fluency

Responsibilities

• Design & Development: Architect and implement complex, responsive, and accessible front-end features using modern JavaScript frameworks (React, Angular, or Vue.js) and web technologies (HTML5, CSS3, TypeScript).
• Code Quality: Write clean, well-tested, and maintainable code. Conduct and participate in code reviews to uphold engineering best practices.
• Performance Optimization: Identify and resolve performance bottlenecks to ensure fast page load times, smooth interactions, and optimal Core Web Vitals.
• Cross-Functional Collaboration: Partner with UX/UI designers to translate wireframes and mockups into pixel-perfect, interactive experiences. Collaborate with backend engineers to define and consume APIs.
• Technical Leadership: Mentor junior engineers, contribute to technical design documents, and drive adoption of front-end best practices across the team.
• Operational Excellence: Own the operational health of front-end services, including monitoring, alarming, and on-call support. Participate in root cause analysis and incident response.
• Innovation: Stay current with emerging front-end technologies, tools, and trends. Propose and prototype new approaches that improve developer productivity and customer experience.

Skills

Frontend development

Software engineering principles

REST APIs

WebSocket

Asynchronous programming

AI fluency

Education

Bachelor's degree

Job description

Amazon Inc. in Redmond, WA is seeking a Front End Engineer (L5) to design, develop, and deliver high-quality, accessible UI components for customer-facing experiences.

You will collaborate with product, UX, and backend teams to build scalable front-end solutions that perform at scale. The role emphasizes code quality, performance optimization, and leadership—mentoring juniors, driving best practices, and owning front-end health from development through on-call.