Top Front End Developer Jobs in NYC, NY

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.

The role involves developing front-end solutions for trading tools within the Fixed Income Trading Services, collaborating with stakeholders, and ensuring high performance and usability in trading applications.

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.

Build and own complex production-grade front-end applications (React preferred) using TypeScript and modern JavaScript. Design front-end architecture, develop data-intensive UIs and visualizations, integrate with APIs and WebSocket services, and collaborate with designers, backend engineers, and military SMEs to deliver reliable, real-time operational user experiences.

Lead front-end engineering and provide senior technical consulting across frontend and backend systems. Design, develop, test, and deploy RESTful services and reusable UI components, enforce coding standards, build CI/CD pipelines (GitLab), provision Kafka objects, participate in code reviews, and advise IT leadership on architecture, security, and emerging technologies to meet business requirements.

Build and maintain the analyst-facing frontend for Kepler's AI research platform: high-performance, data-dense interfaces (spreadsheets, tables, streaming views) that surface cited, auditable values and verification workflows. Ship end-to-end features, optimize browser performance, implement real-time streaming UX, and ensure traceability from UI cells back to original sources.

Build and maintain high-performance front-end (and contribute to back-end) for an AI platform using TypeScript, React, Next.js and React Native. Improve visuals, implement tests, collaborate with AI teams, and deliver production-ready features.

The role involves developing and maintaining trading user interfaces, enhancing performance of C# components, and adapting to project changes while collaborating with teams.

The Front End Engineer will build interactive user experiences, manage technical projects, ensure UI component reliability, and solve design problems, working within a rapidly changing environment.

Build and maintain responsive, accessible frontend interfaces using React and TypeScript. Collaborate with product, design, and backend teams to launch performant, scalable UIs, create reusable component libraries, define APIs, mentor engineers, and drive frontend best practices.

The role involves consulting, developing frontend and backend applications, ensuring coding standards, and collaborating on new technologies.

Lead the UI development across multiple pods, mentor junior developers, influence non-functional requirements, and promote modern development practices.

Own end-to-end frontend development for core crypto payment flows across web and mobile. Improve latency, availability, and SLOs; build user-facing features (contacts, real-time transaction status); identify and fix performance bottlenecks; partner with product/design/backend; mentor junior engineers to reduce customer friction at scale.

As a Senior II Frontend Engineer, lead design and implementation of frontend systems, mentor engineers, write high-quality code, ensure performance, and collaborate with cross-functional teams.

Develop and maintain UI/front-end features using HTML5, CSS, AJAX, jQuery, and AngularJS. Integrate with Java/J2EE back-end systems (Spring, Hibernate). Work on front-end implementation, debugging, and cross-team coordination for a 6+ month engagement in New York.

The Frontend Engineer will develop sophisticated components using TypeScript and React, ensure integration with smart contracts, and collaborate with backend teams to enhance digital asset management interfaces.

Design and implement high-quality, performant frontend interfaces for a complex enterprise system. Translate product and design specs into production-grade React/TypeScript UI, integrate with backend APIs, contribute to architecture and design system, and ensure performance, accessibility, and security across multiple user personas and permission levels.

Lead frontend architecture and delivery using React, Next.js, and TypeScript. Drive reusable component libraries, integrate REST/GraphQL, optimize performance and accessibility, mentor engineers, lead reviews, and collaborate across design, backend, and DevOps to ship scalable, maintainable web experiences.

Build and maintain frontend interfaces for a fintech product, collaborate across product/design/ops, own full-stack features end-to-end, design APIs and testing, and iterate on product to improve user financial tools.

Volunteer Principal Front End Developer to build React/React Native web and mobile features, mentor engineers, implement scalable full‑stack solutions, ensure cross‑browser compatibility and testing, work with Node/MongoDB/AWS, attend weekly standups, and support a fundraising launch. Minimum 4 hours/week commitment.

Build, test, and optimize responsive web applications using Next.js and React. Collaborate with designers and back-end developers, implement UI/UX designs, write clean maintainable code, and debug front-end issues to ensure high performance across devices and browsers.

Build and maintain responsive, accessible React/NextJS web interfaces and support Chrome extension development (Manifest V3). Integrate with backend APIs or WebSockets, optimize performance, write tests, perform code reviews, monitor and document extension and web app behavior, and collaborate with cross-functional teams.

The Front-End Developer will create and maintain web applications using HTML, CSS, and JavaScript, focusing on automation and software delivery processes.

Build front-end features for Backpack Exchange, optimize performance, and manage projects from start to finish with a focus on React.

Build pixel-accurate, accessible, responsive interfaces from Figma using handcrafted CSS/SCSS and modern layout primitives. Implement interactive UI in Vanilla JavaScript and React/Next, integrate front-end with CMSs (Contentful, Drupal, WordPress), use modern build tooling, participate in code reviews, and leverage AI tools to speed debugging and scaffolding.