Top Front End Developer Jobs in Seattle, WA

Own and evolve the design system and horizontal web foundation: shared components, tokens, theming, tooling, and architecture. Improve web performance and accessibility, build developer experience and AI-assisted frontend tooling, partner with product teams to integrate platform capabilities, and create documentation and governance to drive cross-team adoption.

Own end-to-end customer-facing marketplace frontend features—from ideation to launch—working closely with product and design. Prototype and build high-fidelity React/Next.js interfaces, improve discovery, matching, scheduling and booking flows, run A/B tests, elevate visual polish and accessibility, and contribute to the design system and frontend platform to increase product quality and speed.

Lead architecture and delivery of large-scale React and React Native frontends. Define frontend strategy and best practices, build shared component libraries and design systems, optimize performance and accessibility, collaborate with product/design/backend teams, mentor junior engineers, and resolve complex frontend and cross-stack issues.

The Staff Frontend Engineer will design the UI for a high-performance datacenter infrastructure platform, optimizing for speed and handling complex datasets. Responsibilities include building applications, collaborating on API design, and establishing frontend architecture.

Build, maintain, and optimize scalable front-end systems and web experiences. Translate Figma designs into reusable components, support large-scale site migrations, improve performance, accessibility, and SEO, and work with cross-functional teams using modern workflows and AI-assisted tools.

Architect and build a high-performance, low-latency trading web platform. Integrate real-time market data and execution workflows, collaborate cross-functionally on large initiatives, and deliver scalable, performant, user-focused frontend applications with strong attention to API design, tooling, and developer experience.

As a Front-End Software Engineer, you will build AI-powered interfaces, tackle complex design problems, and collaborate across teams to enhance user experiences. Responsibilities include mentoring, implementing responsive UI, and engaging with AI technologies.

Develop innovative UI and web systems, managing project priorities and deadlines while working within a collaborative team environment.

Seeking a Java Front End Developer with expertise in AngularJS and HTML to discuss solutions with customers and understand system architecture.

The role involves architecting, designing, and developing multi-channel eCommerce applications, overseeing developers, managing project setups, and responding to client inquiries.

Seeking a Java Front End Developer with experience in Java, AngularJS, and other front-end technologies to enhance user interface development.

The Front End Developer will handle architecture and development of multi-channel eCommerce applications, oversee other developers, and adapt workflows based on client requests.

The role requires a front-end developer with experience in Angular JS, React, TypeScript, and strong skills in Microsoft technologies such as C# and .Net. Good communication and problem-solving skills are essential.

Develop Front End solutions using AngularJS and HTML, while understanding customer requirements and maintaining standards in web accessibility.

Build and ship polished, accessible, high-performance front-end features for Deepgram's Console and Playground. Partner with product and design to translate ideas into incremental releases, improve internal tools, and uphold front-end engineering standards through code reviews and design discussions.

Lead front-end technical strategy for Coinbase Advanced trading platform: define and execute a scalable roadmap, deliver a low-latency interface across web and mobile, mentor engineers, anchor complex projects, and ensure high standards for code quality and system design.

Build and own end-to-end frontend experiences for Coinbase card products across web and mobile. Ship high-scale consumer features, improve payment flow performance and SLOs, reduce latency and CX contacts, mentor engineers, and collaborate with product, design, and backend teams to deliver reliable, user-focused card functionality.

Volunteer Principal Front End Developer to build React/React Native web and mobile features, mentor engineers, implement scalable full‑stack solutions, ensure cross‑browser compatibility and testing, work with Node/MongoDB/AWS, attend weekly standups, and support a fundraising launch. Minimum 4 hours/week commitment.

Design, build, and deliver front-end features with strong UX focus. Own technical design, coding, testing, deployment, and monitoring in a continuous delivery, microservices environment. Collaborate with Product, implement automated QA practices, and contribute to production deployments while practicing robust testing methodologies.

Build and maintain responsive, accessible React/NextJS web interfaces and support Chrome extension development (Manifest V3). Integrate with backend APIs or WebSockets, optimize performance, write tests, perform code reviews, monitor and document extension and web app behavior, and collaborate with cross-functional teams.

Design and implement frontend applications using JS, CSS, React, and Flutter. Collaborate on technical specs and contribute to documentation, ensuring user experience and performance.

Build and own complex frontend features using Vue 3 and TypeScript while developing the Python services and APIs that power them. Improve performance, accessibility, testing, CI/CD, and observability; collaborate with product and design; mentor engineers and apply AI-assisted development tools responsibly to accelerate productivity and maintain quality and security.

Lead and own the frontend for a perpetuals exchange using TypeScript and React. Design order entry, positions, pricing displays, and charts, make trader-focused UX decisions, and operate autonomously on a small, fast-moving team.

Develop modern web applications focusing on UI components using React while ensuring performance, accessibility, and cross-browser compatibility.

Build and own complex production-grade front-end applications (React preferred) using TypeScript and modern JavaScript. Design front-end architecture, develop data-intensive UIs and visualizations, integrate with APIs and WebSocket services, and collaborate with designers, backend engineers, and military SMEs to deliver reliable, real-time operational user experiences.