Front End Developer Jobs in Sunnyvale, CA

The Senior Fullstack/Frontend Engineer will architect and implement scalable frontend systems for AV mapping applications, collaborating with cross-functional teams to enhance user experience and performance in autonomous driving technologies.

Build and operate full-stack vehicle software integrity systems using Next.js and Go. Develop data visualizations and dashboards, extend shared component libraries, collaborate with product and design teams, and ensure code quality through testing, reviews, debugging, and performance analysis. The role requires technical ownership, architectural decision-making, cross-functional communication, mentoring, and effective delivery amid changing priorities.

Own front-end semiconductor design and verification automation from RTL entry through DFT and implementation handoff. Responsibilities include RTL build, lint, CDC, formal, register generation, simulation, regressions, coverage, emulation, FPGA prototyping, and AI-assisted tooling. The role also manages EDA tool versions, distributed compute, flow health, maintenance, and collaboration with design, verification, DFT, and physical design teams.

Build enterprise applications and polished user interfaces for agentic AI experiences. Own full-stack features from frontend architecture through backend integration, testing, deployment, and production support. Develop React and TypeScript interfaces for multi-step agent workflows, tool calling, approvals, retrieval, state management, errors, and human-in-the-loop interactions. Integrate APIs, agent orchestration layers, and enterprise systems while contributing to backend development, architecture reviews, reliability, and production engineering.

Build and optimize frontend advertising experiences and rendering libraries across platforms. Collaborate with design, product, and partner teams on UX, analyze ad-stack performance using data and monitoring systems, and drive improvements across complex, multilingual, multi-region, cross-platform web applications.

Design, build, and maintain web interfaces and core services for Clover Gift Cards across POS, web, and consumer portals. Own features end-to-end, write automated tests, troubleshoot production issues, collaborate cross-functionally, and participate in on-call rotation to ensure platform reliability and high availability.

Build and architect responsive frontend interfaces for a quantum security platform. Translate complex network and security data into accessible dashboards, topology visualizations, investigations, reporting workflows, and remediation experiences. Collaborate with product, backend, QA, and solutions teams; optimize performance, maintain design systems, conduct usability testing, establish frontend standards, and mentor engineers.

Design and architect Android systems and modular components to support multiple apps. Ship end-to-end user features using an AI-assisted workflow, improve developer tooling and CI, set quality and safety standards for AI-generated code, solve performance and production issues, and document playbooks for the team.

Lead development of Moveworks' fullstack web applications and AI-powered agent builder experiences. Design scalable UI frameworks, web technology stacks, authentication, event tracking, design systems, and APIs. Collaborate with product, machine learning, and engineering teams to improve user experience and customer adoption while delivering reliable, modular solutions for global enterprise customers.

Verify the front end of high-performance RISC-V CPU cores, including instruction fetch, branch prediction, decode, dispatch, and speculative execution. Develop verification strategies, SystemVerilog/UVM testbenches, constrained-random tests, assertions, and functional coverage. Debug RTL and simulation failures using waveforms and collaborate with CPU architects, RTL designers, and software teams to identify root causes and ensure correctness across workloads and corner cases.

Designs, integrates, verifies, and qualifies flight RF front-end electronics for spacecraft phased-array antennas and satellite communications. Responsibilities include RF and mixed-signal circuit design, PCB layout, component selection, phased-array calibration, laboratory characterization, environmental qualification, simulation-to-measurement correlation, troubleshooting, documentation, and cross-functional collaboration. The role also mentors engineers and supports repeatable RF design and verification practices.

Verify RISC-V CPU front-end units, including instruction fetch, branch prediction, caches, TLBs, and fetch control structures. Build UVM testbenches, constrained-random and directed stimulus, checkers, transactors, predictors, scoreboards, and C++ reference models. Execute verification plans, track functional and code coverage, and resolve microarchitectural edge cases with RTL, performance modeling, and software teams using simulation and emulation workflows.

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

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.

Founding front-end engineer to design and build Flick's editor UI (canvas, timeline, node graph, playback). Lead architecture, prototype creative workflows, optimize complex UX interactions, establish code quality and performance practices, collaborate with design/product/AI backend, and drive key technical and product decisions.

Architect, design and implement features for RISC-V CPU core generators using Chisel, with responsibilities in verification and performance modeling, collaborating with teams.

Design and implement CPU microarchitecture features and ISA extensions using Chisel; integrate into Chisel/FIRRTL framework; perform sandbox verification and collaborate with verification, physical implementation, and performance teams to meet frequency, area, power, and performance goals. Produce documentation and participate in collaborative design.

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

Maintain and enhance the FortiSwitch web GUI by locating and fixing bugs, proposing and implementing new features, writing i18n/a11y-compliant HTML/JS/CSS (TypeScript/SCSS), interfacing with backend C code, drafting functional specs, and improving performance and codebase maintainability.

Lead verification strategy and execution for CPU frontend in high-performance out-of-order cores. Define test plans, checkers, assertions, coverage, and stimulus for branch prediction, instruction fetch, redirects, recovery, and MMU/ITLB interactions. Partner with architects, RTL, performance, and verification teams, apply simulation, formal, and emulation methods, drive block- and core-level signoff, mentor engineers, and build reusable DV infrastructure and methodology.

Own and build complex frontend user experiences for an AI-native cybersecurity platform. Design performant interfaces, visualizations, and dashboards for security analysts, define frontend architecture and standards, collaborate with product/backend/AI teams, and integrate AI to improve investigation and response workflows while ensuring scalability and maintainability.

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

The Sr. Front-end Engineer will work on search and category pages, requiring strong JavaScript and React.JS skills with 3-4 years of experience.

Work with ASIC Infrastructure to enhance design productivity, deploy AI toolsets at scale, and improve CI systems while solving complex issues.

Develop user-facing features and create frontend infrastructure using React.js and TypeScript, collaborating with product designers and backend engineers.