Top Front End Developer Jobs in Seattle, WA

Build and maintain responsive, accessible CraftCMS and CraftCommerce sites for B2B manufacturers. Develop catalog and commerce features, forms, transactional emails, third-party integrations, and custom CKEditor elements. Translate Figma designs into Twig and Tailwind CSS implementations using JavaScript, AlpineJS, and Vue. Collaborate with backend developers, project managers, and strategists while using Git, Bitbucket, DDEV, and structured testing and release environments.

Design and build a scalable, responsive UI; lead frontend architecture and optimization; apply UI/UX best practices; integrate with backend APIs; ensure high web performance and deploy user-facing features.

Lead frontend engineering initiatives for Grafana’s DataViz squad, from problem framing through rollout and measurement. Build and improve visualization features using TypeScript, React, uPlot, and eCharts; mentor engineers; contribute to design reviews and technical proposals; participate in on-call and incident response; support customer escalations; and collaborate across squads. The role also emphasizes open-source contribution, observability expertise, pragmatic AI-assisted development, and effective remote communication.

Build and maintain patient- and provider-facing applications using SvelteKit, Tailwind, and TypeScript. Develop Android and iOS progressive web applications, extend PWAs with Kotlin and Swift plugins, integrate CGMs and Apple HealthKit, and consume secure APIs. Collaborate with backend engineers, designers, and clinical experts to deliver accessible, reliable, performant, and patient-safe healthcare experiences.

Build and own high-performance, customer-facing frontend applications using React, Redux, and TypeScript. Integrate AI-powered features, establish AI development guardrails, optimize scalability and reliability, and maintain design systems, testing standards, and continuous delivery practices. Collaborate with product, design, and backend teams while mentoring engineers and driving features from concept through production.

Build and maintain fast, intuitive frontend applications for blockchain and Web3 products. Collaborate with product, design, and engineering teams; develop reusable components and frontend architecture; integrate wallets and smart-contract interactions; improve performance, reliability, and accessibility; participate in technical planning and code reviews; mentor other developers and establish frontend best practices.

Lead architecture and implementation of scalable, performant advertiser-facing web experiences. Drive frontend platform modernization, AI-enabled engineering practices, shared frameworks, and cross-team technical alignment. Mentor engineers, run architecture reviews, and improve performance, accessibility, observability, and developer productivity.

Build and own a compliance platform UI from scratch, including dashboards, contract and BAA management, data residency, opt-in/opt-out, authentication, authorization, and access reporting. Partner with backend engineering to shape APIs, launch a lightweight v1, and iterate with internal users across engineering, customer success, DevOps, executives, and privacy teams.

Develop and maintain React-based command-and-control web applications for complex defense projects. Responsibilities include gathering operator feedback, prototyping features, building reusable component libraries, writing accessible and performant code, participating in the full agile software development lifecycle, conducting code reviews, testing, deployment, and collaborating with cross-functional teams and customers.

Own frontend domains end to end, including architecture, implementation, testing, production quality, performance, accessibility, and security. Set technical direction, design reusable component systems, establish testing strategies, diagnose complex browser and production issues, and partner with Product, Design, QA, and engineering teams. Mentor engineers, review consequential changes, and use AI-first development practices while maintaining accountability for shipped software.

Leads frontend architecture strategy across products, directs design-system platform development, establishes quality, security, accessibility, performance, and testing standards, and creates tooling and guardrails for engineering teams. Sets AI-native frontend practices, improves production health, aligns Engineering, Product, Design, and QA, and develops senior engineers into broader technical ownership. The role remains hands-on for high-risk technical work while emphasizing organizational-scale technical direction.

Develop and maintain React-based frontend components for transaction forms and eSign products. Write tested, secure, and maintainable code, improve monitoring and operational reliability, participate in on-call rotations, and deliver features independently. Collaborate with product, design, and engineering teams through Agile planning, code reviews, and technical discussions. Serve as a subject matter expert for internal components and tools while contributing to scalable real estate technology.

Build and own interactive web experiences across Chat, Notes, Calendar, Docs, and Sheets. Develop reusable frontend architecture, real-time collaboration, rich-text editing, scheduling, tables, spreadsheets, and streaming AI integrations. Partner with product, design, backend, and AI engineering teams to deliver reliable, accessible, high-performance experiences across browsers and devices.

Develops modern, responsive, accessible front-end interfaces, reusable component libraries, templates, and interactive features for federal and DoD-aligned IT environments. Collaborates with UX, backend, CMS, and product teams on API integrations, performance optimization, accessibility compliance, cross-browser troubleshooting, documentation, code reviews, and Agile delivery. Requires an active Secret clearance, bachelor’s degree, and at least seven years of front-end development experience.

Develop and maintain responsive front-end interfaces for federal and DoD-aligned digital properties. Responsibilities include UI and CSS updates, Section 508/WCAG accessibility improvements, content-driven template and component changes, cross-browser testing, performance optimization, design system support, code reviews, and deployment validation. The developer collaborates with UX, design, content, and backend teams while following enterprise brand, security, documentation, and version-control standards.

Develop responsive, accessible enterprise user interfaces using HTML, CSS, and JavaScript. Build interactive components, translate UX designs into production code, integrate APIs, ensure WCAG and Section 508 compliance, troubleshoot cross-browser issues, optimize performance, and support component libraries. Collaborate with designers, backend engineers, analysts, and product owners in Agile environments while documenting standards and implementations.

Own frontend architecture for React and TypeScript applications supporting complex research and analytics workflows. Build performant, accessible interfaces; establish standards for performance, testing, accessibility, and CI quality gates; evolve shared component libraries and design systems; partner on API contracts; address technical debt; contribute to Django services; and mentor engineers while leading department-wide technical initiatives.

Build and maintain frontend-leaning, full-stack Creative and Studio products using React and Next.js. Develop AI interfaces, UX/UI workflows, proof-of-concept products, integrations, and end-to-end features. Collaborate with Design, Engineering, Growth, and Sales; iterate based on user feedback; maintain scalable, secure infrastructure; process large datasets; and mentor less experienced engineers. The role emphasizes strong portfolio work and demonstrated software engineering ability rather than formal degrees or certifications.

The Frontend Engineer role involves developing scalable web applications using Angular, ensuring high-quality user experiences, optimizing performance, and collaborating with backend teams. Responsibilities include code reviews, testing, and supporting deployment processes.

Build and maintain distributed, high-volume eCommerce systems using mobile-first responsive design. Develop across the full stack with .NET, ASP.NET, C#, MVC, JavaScript, HTML5, CSS3, and SQL Server. Integrate user interfaces with databases, apply object-oriented design patterns, collaborate with outsourced partners, and troubleshoot problems in a fast-paced environment. The role requires strong communication, attention to detail, process orientation, and quick decision-making.

Build and refine front-end experiences for web and mobile: onboarding, checkout, gallery features, design system and enterprise dashboard. Collaborate closely with designers and PMs, ship fast, maintain aesthetic quality, and iterate with user feedback using React, Next.js and TypeScript.

Lead frontend architecture and development for an AI-powered voice platform. Build responsive dashboards and reusable components, integrate real-time WebSocket and WebRTC voice capabilities, consume AI backend APIs, manage complex application state, and optimize performance, accessibility, and reliability. Mentor frontend developers, establish coding standards, collaborate with designers and backend teams, and develop prototypes, testing strategies, and production-ready interfaces.

Lead frontend-leaning full-stack implementation work for carrier and enterprise integrations: architect reusable UI and API layers, author RFCs, guide technical delivery, enforce testing and security best practices, and partner with cross-functional teams to scope and ship production integrations.

Leads the design and development of complex frontend systems and product features using Angular and React. Architects scalable frontend patterns, improves performance and engineering velocity, drives testing and code-quality practices, and leads major technical initiatives. Partners cross-functionally with backend, product, design, integrations, and QA; makes technical decisions, mentors engineers, and advances frontend architecture and collaboration across teams.

Leads long-term frontend architecture and technical strategy across major product areas. Designs scalable, performant systems using Angular and React, resolves cross-team challenges, establishes quality and testing standards, mentors senior engineers, and influences technical roadmaps and organizational decisions. The role combines hands-on implementation with company-wide technical leadership and requires deep expertise in frontend scalability, performance optimization, state management, and reusable component architecture.