Top Senior Front End Developer Jobs in NYC, NY

Develop and deploy reliable, customer-facing frontend web applications using modern JavaScript and TypeScript technologies. Responsibilities include gathering requirements, implementing high-fidelity designs, researching UI/UX patterns, proposing technical solutions, testing, optimizing performance and security, and collaborating with and mentoring engineering team members.

Develop and deploy reliable, modular frontend web applications for internal and public users. Responsibilities include gathering requirements, implementing high-fidelity designs, researching UI/UX patterns, proposing technical solutions, coding, testing, deployment, and contributing to hiring and team development. The role emphasizes JavaScript/TypeScript, frontend frameworks, performance, security, collaboration, mentorship, and strong user experience.

Designs, develops, tests, deploys, operates, and maintains scalable full-stack software products. Builds React-based enterprise applications, writes production-ready code, performs code reviews, improves reliability and performance, integrates APIs, and follows security, compliance, accessibility, and DevOps practices. Collaborates across teams using agile methods, analyzes failures, prioritizes work, and contributes to technology transformation and continuous improvement.

Design, implement, and maintain enterprise-grade front-end applications; collaborate with UX and back-end teams to integrate APIs; optimize performance and accessibility; enforce code quality via testing and reviews; contribute to front-end architecture; mentor junior engineers and share best practices while staying current with emerging front-end technologies.

Design, implement, test, and deliver frontend application features using React. Collaborate with product, design, and engineering stakeholders; solve complex technical problems; improve architecture, scalability, performance, security, and development practices. Own feature sets and technical debt, contribute to CI/CD and software lifecycle processes, and provide technical leadership and mentorship.

Design, build, and deliver front-end features with strong UX focus. Own technical design, coding, testing, deployment, and monitoring in a continuous delivery, microservices environment. Collaborate with Product, implement automated QA practices, and contribute to production deployments while practicing robust testing methodologies.

Own and architect frontend development for mobile and web applications. Lead delivery of complex features including advanced order types, new financial asset integrations, and social functionality. Collaborate with a lean engineering team to build scalable, secure, performant interfaces, while contributing to TypeScript backend services when needed. Independently translate product strategy into technical plans and execute initiatives from concept through launch.

Build polished consumer and internal web interfaces using React and Next.js. Partner with backend, machine learning, and product teams to ship dependable features, guide frontend architecture, improve performance and accessibility, and establish component libraries, state management, and automated testing. The role also involves rapid iteration with users, product design collaboration, and helping shape frontend engineering practices at an early-stage healthcare technology startup.

Build and maintain Gallatin’s Vue-based Navigator frontend, including reusable UI components, design-system primitives, offline Progressive Web App functionality, API integrations, testing, and CI/CD improvements. Ensure reliable desktop and iPad experiences, troubleshoot API and CORS issues, contribute to architectural decisions, and collaborate with product, design, and backend teams. The role also involves documentation, demos, cross-functional troubleshooting, and potentially mentoring junior engineers.

Build and maintain high-traffic ABC News and ABC-owned television station websites using TypeScript, JavaScript, React, and Node.js. Responsibilities include developing scalable features, creating technical designs, improving architecture and engineering practices, reviewing code, enhancing performance and accessibility, supporting observability, and mentoring engineers. The role owns features through the full software development lifecycle and serves as a senior technical resource.

Lead frontend engineering for a data-intensive web application. Resolve stability and state-consistency issues, improve rendering performance for large datasets, establish observability and testing practices, create shared abstractions, guide architecture, manage complex migrations, and mentor engineers. The role requires deep React and TypeScript expertise, production-scale performance optimization, search or recommendation experience, and strong technical communication.

Own and evolve the web client for a complex software application, building polished, accessible, high-performance interfaces with React and TypeScript. Partner with design, product, backend, and infrastructure teams to translate complex capabilities into intuitive user experiences. Develop reusable components, prototype and ship incrementally, improve application performance and stability, and contribute to engineering quality through peer review. The role requires strong product judgment, communication, and comfort working onsite across the stack.

Architect and build a high-performance trading platform for active traders. Develop responsive web interfaces integrating real-time market data, low-latency execution workflows, and advanced trading tools. Collaborate with cross-functional engineering teams on large-scale initiatives, emphasizing scalability, performance, API quality, maintainability, developer experience, and end-user usability.

Lead the evolution of Seeq’s frontend infrastructure, including React systems, component libraries, state management, styling architecture, and reusable application patterns. Drive large-scale refactors, improve developer experience, ensure accessibility and performance, evaluate open-source tools, and establish technical standards adopted across teams. Collaborate with designers, product teams, and engineers through architecture reviews, documentation, code reviews, mentoring, and cross-team delivery.

Lead frontend engineering for large-scale React web applications. Architect application patterns, structure, libraries, and coding standards; build React applications end to end; conduct code reviews; mentor engineers; promote performance, scalability, and maintainability; and collaborate with designers, product managers, and technical and non-technical stakeholders.

Lead front-end engineering for enterprise transportation applications using React, TypeScript, and Material UI. Responsibilities include front-end architecture, reusable component development, accessibility, responsive design, API integration, SQL troubleshooting, testing, CI/CD, code reviews, mentoring, Agile planning, modernization, and production support. The role independently leads features from requirements through deployment while collaborating with designers, product owners, analysts, engineers, testers, DevSecOps teams, and government stakeholders.

Build and scale React Native mobile and React web features, owning frontend architecture, performance, analytics instrumentation, and polished user experiences. Partner with product and design, remove delivery bottlenecks, and establish frontend quality standards in a fast-moving startup. The role requires hands-on senior engineering, product judgment, end-to-end ownership, and daily use of AI coding tools.

Build the realtime, HIPAA-compliant messaging and collaboration frontend ('Pulse') that makes an AI colleague feel human. Implement complex interactive data visualizations, micro-interactions, and high-performance accessible interfaces. Work embedded with product and design, own UI quality, iterate on AI-driven specs, and deliver production frontend experiences clinicians will trust.

Lead frontend and full‑stack projects across Marimo's open-source ecosystem. Design simple, powerful editor experiences, build performant data visualizations and editor extensions, engage with the community, triage issues, and balance community needs with product roadmap.

Build and operate customer-facing frontend experiences for search, recommendations, and generative AI. Own software development end to end, including architecture, implementation, testing, delivery, observability, and long-term evolution. Collaborate with backend, machine learning, product, and design teams; review code, advise on technical designs, participate in interviews, and mentor engineers. Improve performance, scalability, accessibility, maintainability, and developer experience across complex frontend systems.

Build and operate full-stack applications, customer portals, APIs, and backend services supporting usage metering, billing, provisioning, and cloud marketplace integrations. Develop primarily with TypeScript and React, alongside Golang and Node.js services. Lead technical design, improve reliability and observability, optimize CI/CD, participate in on-call, mentor engineers, and coordinate cross-functionally. Own production behavior across distributed systems, including reconciliation, rollout controls, monitoring, and recovery procedures.

Design and implement high-performance, responsive front-end applications for the Bruin portal using React/Next.js and TypeScript. Build and maintain a cross-application design system and component library (Storybook), integrate with APIs and microservices, ensure accessibility and performance, collaborate with cross-functional teams, mentor engineers, and contribute to prototyping and MVP development with AI-augmented engineering tools.

Design, build, deploy, and maintain secure, scalable Java and Spring Boot services for a multi-tenant ecommerce SaaS platform. Develop REST APIs, optimize MySQL databases, operate AWS workloads, and support CI/CD, observability, testing, and production systems. Contribute to architecture and technical decisions, mentor engineers, troubleshoot issues, and participate in on-call support while ensuring PCI DSS compliance and responsible use of AI-assisted development tools.

Design, build, and optimize responsive, high-performance front-end interfaces for a Web3 DEX using modern JavaScript frameworks and TypeScript. Collaborate with designers, product, and back-end teams to integrate blockchain APIs and smart contracts, mentor junior developers, troubleshoot issues, and contribute to mobile-first/PWA development while ensuring scalability and maintainability.

Senior Front End Software Engineer responsible for architecting, building, and maintaining high-performance applications across frontend, backend, cloud, and event-driven systems. The role leads complex technical initiatives, integrates AI and data pipelines, ensures software quality through testing and reviews, owns applications throughout their lifecycle, documents architecture, collaborates cross-functionally, and mentors engineers. Primary technologies include TypeScript, JavaScript, React, Node.js, AWS, and modern CI/CD and containerization practices.