Front End Developer Jobs in Sunnyvale, CA

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.

As a Senior Fullstack Engineer, you'll lead the development of AI-powered web applications, ensuring scalability and modular design while collaborating across teams to enhance user experience.

Lead design and implementation of scalable, domain-driven web architectures. Build high-performance backend services (Node.js/TypeScript), responsive React frontends (TanStack), and PWAs (Service Workers/Workbox). Design REST and GraphQL APIs, event-driven systems, data synchronization for intermittently connected clients, and manage client/server persistence (IndexedDB/Dexie, SQLite, PostgreSQL). Deploy cloud-native solutions on AWS (EKS, S3, SQS, SNS, API Gateway, Cognito). Mentor engineers and ensure engineering best practices, testing, and regulatory alignment.

The Front End Developer will design UI frameworks and implement user experiences, converting UX requirements into high-quality HTML, JS, and CSS, while collaborating with designers and backend engineers.

The role involves developing high-quality, low-latency user experiences for web applications, collaborating with various teams, and utilizing web technologies effectively.

Build scalable, accessible frontend components and UX for an AI-native data platform using React and Next.js. Implement dashboards, agent interfaces, and multi-tenant admin panels; integrate real-time and streaming data, APIs, and visualize high-dimensional data. Contribute to component libraries, design systems, and ship production-ready, responsive features.

Develop front-end applications utilizing WPF and web technologies. Require strong knowledge of HTML5, CSS3, and JavaScript with 5-7 years experience.

Seeking a Front-End Developer with 5-7 years of experience in development, proficient in WPF and front-end web technologies including HTML5 and CSS3.

The role involves building and redesigning web applications, focusing on client-side development, UI design, and implementing scalable frameworks.

Build full-stack features and realtime web interfaces for the Autonomous Traffic Control platform. Develop frontend UIs (maps, telemetry) and backend services/APIs, integrate streaming feeds, and ship reliable, operational tools used by controllers, fleet operators, and drivers.

Lead development of AI-powered enterprise platforms, focusing on full-stack web development, UI/UX design, and data visualization.

Design, build, and maintain scalable full-stack applications using React/Next.js and Java/Node.js backends. Implement microservices, Kafka event-driven systems, ETL/data pipelines, and REST APIs. Ensure performance, write unit/integration tests, collaborate on CI/CD and deployments, troubleshoot production issues, and contribute to architecture and design phases.

The Front End Developer will design UI frameworks, collaborate with UX designers and backend engineers, and convert UX requirements into HTML, JavaScript, and CSS.

Design and implement a data-oriented, configurable frontend platform for defense-focused mission planning, monitoring, and debrief UIs. Build 2D/3D rendering and selection tools, integrate with simulators and data pipelines, collaborate with design and cross-functional teams, and deliver stable, testable interfaces for real-time defense/autonomy workflows.

As a Senior Frontend Engineer, you'll develop UI features for the AI voice platform, working with React and TypeScript while collaborating on backend systems and leading projects from concept to launch.

Design and build responsive, high-performance front-end interfaces for AI-driven finance workflows. Translate complex data into clear visualizations, balance automation with human control, collaborate with backend and AI teams, and own frontend architecture and design system standards.

Senior front-end engineer responsible for developing products end-to-end, owning projects from concept through launch, and shaping company direction to drive growth across portfolio companies.

Design and develop microarchitecture and RTL for wafer-scale AI chips. Lead functional specification, RTL development, synthesis and front-end integration. Collaborate with physical design, verification, DFT, software and systems teams to meet PPA goals. Debug silicon-level functional, timing, and power issues and manage third-party IP and vendor interactions to deliver production silicon.

Design and build high-performance React applications, lead technical design for features, improve frontend reliability, and mentor engineers.

The Senior Software Engineer will design and build backend services, contribute to microservices integration, mentor team members, and debug production issues.

As a Senior Frontend Engineer II, you will optimize user experience, drive experimentation for growth, and improve the frontend architecture of an eCommerce platform while ensuring accessibility and reliability.

Build and ship a collaborative document platform: design and implement a rich, real-time multiplayer editor using TypeScript and React, partner with Product and Design, drive technical direction, ensure high-quality, well-tested frontend code, and iterate based on customer feedback.

Design and build full-stack features for Autonomous Traffic Control, develop responsive web interfaces, and integrate backend services with real-time data for autonomous vehicles.

Develop scalable front-end systems for complex web applications, ensuring security and performance while collaborating with teams.