Top Senior Front End Developer Jobs

Individual contributor full‑stack engineer supporting front- and back-end development. Estimate and complete development tasks, debug and maintain test and production systems, build tests/monitoring/CI-CD changes, participate in on-call rotations and planning, and collaborate on design and onboarding.

As a Software Engineer III, you will develop and support software processes while mentoring junior developers and improving engineering practices.

Build and optimize high-performance, responsive front-end applications for trading workflows. Implement pixel-accurate UI components, real-time dashboards and visualizations, client-side state management with streaming data, and maintain design systems. Collaborate with Product, Design, Data, and Engineering, write tests, contribute to frontend tooling and CI/CD, and troubleshoot production performance issues.

Architect and build frontend for a cloud platform, manage technical roadmap, create scalable infrastructure and components, ensure high-quality implementations.

Design, implement, and maintain frontend applications and internal tools. Own delivery of high-visibility features, collaborate with cross-functional teams, mentor peers, and ensure performant, accessible, polished user interfaces integrated with backend systems.

Own and evolve the front-end architecture for a high-throughput, real-time trading app using Next.js, React, and TypeScript. Build pixel-accurate, accessible, responsive UIs under strict performance budgets; optimize rendering, state management, data flow, and bundle size for sub-second interactions. Integrate with REST and WebSocket APIs, lead end-to-end feature development, set engineering standards, mentor engineers, and contribute across the stack when needed.

Senior Front-End UI Developer (onsite in San Ramon) focused on UI development and test automation. Key responsibilities include working with Java, Selenium-driven automation, RESTful web services and API testing to deliver and validate front-end solutions on a 12-month contract.

Build and optimize high-performance, responsive web and mobile applications using Angular. Architect front-end components integrating with Java microservices, implement efficient data streaming and caching strategies (Redis, off-heap), translate Figma designs into pixel-perfect UIs, ensure scalability and high-concurrency handling with NgRx/RxJS, and contribute to a reusable enterprise design system.

The Senior Full Stack JavaScript Developer will build and maintain user interfaces using React and Next.js, integrate with Node.js backends, and guide other developers. Responsibilities include ensuring accessibility, performance, and reliability of features, engaging in code reviews, and collaborating closely with product teams.

Join Ema as a Software Engineer to design and develop user interfaces for web applications, collaborating with product managers and UX designers, and integrating APIs.

The Senior Frontend Engineer will design and implement web interfaces, ensuring performance, scalability, and maintainable code while collaborating with design and product teams.

The Senior Front End Software Developer will create secure, performant, cross-platform applications, collaborate on feature implementations, and ensure code usability and testing, with a focus on design and structure.

The Senior Frontend Engineer will lead development of UI features using React and TypeScript, collaborate on API designs, and optimize performance in a data-intensive financial platform environment.

Seeking an experienced Front End Software Engineer to develop web applications with a focus on user experience and mentoring team members, utilizing technologies like React and TypeScript.

The Front End Software Engineer will develop web applications focusing on UI/UX using React and other technologies, leading teams and optimizing performance while ensuring compliance with accessibility standards.

As a Senior Software Engineer, you'll lead projects, enhance product quality, and collaborate on technical strategies while building user-facing features.

As a Senior Software Engineer, you'll lead projects to improve educational experiences using AI technologies, focusing on frontend development and collaborating with product managers and designers to deliver quality features.

As a Senior Frontend Engineer, you'll lead the development of frontend applications, crafting seamless user experiences and driving project implementation alongside cross-functional teams.

Architect and build scalable, high-performance dashboards with TypeScript and React using shadcn/ui. Implement advanced state management and real-time GPU telemetry visualizations, enforce frontend standards (accessibility, testing, documentation), integrate with backend APIs, collaborate with designers, and mentor junior engineers.

As a Senior Full-Stack Engineer, you will architect technology for web products, lead feature ownership, mentor juniors, and enhance system performance.

Develop user interfaces for web applications, collaborate with teams, mentor engineers, and ensure code quality and performance in a fast-paced environment.

As a Senior Frontend Engineer, you'll develop and optimize a novel open-source CAD modeling app, enhancing performance and user experience, collaborating with backend teams, and implementing robust APIs and state management solutions.

Design, build, and maintain high-performance, customer-facing web applications for medical software. Drive technical vision, mentor engineers, collaborate with API/Product/UX teams, ensure code quality, scalability, security, and FDA regulatory compliance.

Lead development of Zoom chat and meeting frontend modules using React/Vue and Zoom SDK, implement hybrid WebView bridges, handle streaming via WebSocket/Zoom realtime APIs, ensure WCAG 2.1 accessibility, build CI/CD pipelines, optimize performance under concurrency, and coordinate a distributed multilingual engineering team.

Develop XAML-based front-end components and prototypes using Expression Blend and Visual Studio. Build reusable WPF controls following MVVM and coding standards, produce production-ready XAML working with C#, create interactive high-fidelity prototypes, fix bugs, and refine UI fit-and-finish.