Top Senior Front-End Engineer Jobs in NYC, NY

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 frontend components for Ether.fi’s consumer DeFi products. Collaborate with designers to translate Figma designs into polished user experiences, develop client-side transaction and fund-management integrations, ship high-quality code, uphold frontend security practices, and contribute to refactoring and engineering excellence.

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.

Design and implement frontend features for patient and provider web experiences at scale. Build realtime, accessible, high-performance interfaces, own application reliability and monitoring, contribute to architecture and technical roadmap, drive testing and observability best practices, collaborate cross-functionally, and participate in on-call rotations.

Build and scale high-performance React web applications and React Native mobile apps for real-time logistics operations. Lead frontend architecture, technical design, end-to-end project delivery, reliability and performance improvements, incident response, and debugging. Collaborate with backend and operations teams, make architectural decisions, improve scalability, and mentor engineers.

Design, build, and maintain provider- and care-team-facing web interfaces for clinical and operational workflows. Own features end-to-end, drive frontend architecture, optimize client-side performance and accessibility, collaborate with product/design/data/clinical teams, instrument metrics, and participate in on-call rotations to ensure reliable production systems.

Design, build, and maintain provider-facing web interfaces for clinical workflows. Own end-to-end frontend architecture, performance, accessibility, testing, observability, and reliability. Collaborate with product, design, data, and clinical teams, contribute to technical roadmap, and participate in on-call rotations to ensure production reliability.

Build and improve ClickUp’s core product experiences using Angular and React. Responsibilities include architecting reusable frontend code, collaborating with product, design, backend, integrations, and QA teams, improving performance and usability, maintaining unit and integration tests, resolving complex bugs, following state-management patterns, and mentoring teammates in a fast-paced environment.

Build and own LangChain’s React component library and design system. Develop accessible, reusable UI components; translate design tokens and interaction patterns into code; create tooling for theming, versioning, testing, visual regression, and component discovery; and optimize build performance, bundling, dependency management, and package versioning. Collaborate closely with designers, product engineers, and platform teams to maintain a consistent, high-quality frontend foundation.

Senior Frontend Designer/Developer responsible for building responsive web UIs using ReactJS, HTML5, CSS3 and ES6. Work with cross-functional teams, leverage Webpack and Adobe Creative Suite, follow Agile practices, and maintain high code standards including unit testing, documentation, and peer review.

Lead design-focused frontend development for polished mobile apps. Ship end-to-end features, build performant gesture-driven animations, collaborate with designers for pixel-perfect UI, maintain a mature codebase, and establish automated testing and quality practices.

Lead frontend design and delivery of AI product experiences using React and TypeScript, mentor engineers, set frontend standards, use AI-assisted tooling, and contribute to backend services in Go and product roadmaps.

The Senior Front-End Engineer will develop enterprise-grade web applications using React, collaborate with UX designers and project managers, and enhance existing applications' performance.

Develop and enhance web applications using Vue.js, collaborating with various team members, and providing efficiency improvements and support for existing applications.

As a Senior Front-End Software Engineer, you'll design and implement services, contributing to the architecture and product strategy in a fast-paced environment.

The role involves building high-quality web apps, focusing on AI-powered workflows, human-in-the-loop systems, and customer needs with attention to detail.

As a Senior Front End Engineer, you will lead feature development, write code, and influence product architecture for AI-powered EMR software.

Design and build responsive, accessible, high-performance web interfaces. Collaborate with designers and back-end developers, write clean code, test/debug for cross-browser compatibility, and meet project deadlines.

Join Tabs’ Frontend Platform team to build a scalable design system and component library. Lead full-lifecycle software development, design reliable systems, improve internal and external user experiences, contribute feature ideas, and help shape the engineering organization in an early-stage startup.

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.

Build elegant, responsive front-end user experiences using modern frameworks. Own significant product features from design to launch, collaborate with product, UX, and backend teams, create interactive visualizations for structured and unstructured data, and optimize performance and interactivity for large-scale data applications.

Build and maintain user-facing web interfaces by translating designs into HTML, CSS, and JavaScript. Implement interactive features, ensure responsive and cross-browser compatibility, optimize performance, test and debug code, collaborate with back-end developers for integration, and maintain existing applications while following accessibility and front-end best practices.

Design, build, and maintain user-facing web interfaces. Translate mockups into HTML/CSS/JavaScript, implement interactive elements with front-end frameworks, ensure responsive and accessible cross-browser experiences, optimize performance, test and debug code, and collaborate with back-end engineers.

Own and ship major parts of a core web application for power users. Build high-performance, stateful interfaces for search, transactions, and workflows. Collaborate with backend, product, and design to define and deliver end-to-end features with full ownership.

Design and build web apps for creating and listening to music. Optimize performance, contribute to design decisions, and create libraries for audio experiences.