Top Javascript Jobs in NYC, NY

As a Full-Stack Software Engineer II, you will develop AI-centric web applications, collaborating on product and technical decisions to optimize learning and deliver quality applications.

Join a team building a strategic reference data platform for client, account and instrument data. Deliver horizontally scalable, high-performance JavaScript applications, collaborate with senior business and technical partners, and maintain/extend mission-critical software. Requires strong problem-solving, independence, and ability to learn new technologies quickly.

As a JavaScript Developer, you will design, implement, and maintain web applications, collaborate with cross-functional teams, innovate solutions, and ensure high performance and availability of systems.

As a Senior Full-Stack Software Engineer, you'll build AI-driven web applications in TypeScript, manage technical decisions, collaborate on products, and mentor team members while ensuring high-quality user experiences.

Join Customizo as a Junior JavaScript Developer to begin your training as a ServiceNow Developer. You will learn through certification courses, mentorship, and project collaboration, while developing and optimizing solutions integrated with ServiceNow.

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.

Seeking a Full-Stack JavaScript Developer to build web applications, test software systems, and ensure software quality in a collaborative remote environment.

Build full-stack TypeScript applications, collaborate on product and technical decisions, manage project priorities, and optimize for learning.

As a Senior Full-Stack Software Engineer, you will develop AI-centric web applications, participate in architectural decisions, and mentor team members while managing project priorities and deliverables.

Design and implement backend services and APIs, develop systems for personalization and recommendations, and collaborate with product teams to enhance the platform.

The role involves developing scalable web-based UIs and trading tools, collaborating with traders and developers to implement trading and reporting tools.

Senior full‑stack engineer responsible for building backend services (Node.js/TypeScript) and integrating with frontends (React/Vue). Ship production APIs, collaborate cross‑functionally, own delivery, mentor peers, and develop modular, testable, performant systems across diverse greenfield projects.

Design and develop responsive cross-platform mobile applications using React Native and JavaScript, collaborating with teams and ensuring high app performance.

Develop and maintain cross-platform mobile apps using React Native and JavaScript, ensuring high performance and usability through coding, collaboration, and testing.

As a Software Engineer, you'll design and develop web applications and APIs, focusing on both front-end and back-end solutions while collaborating with cross-functional teams in an agile environment.

Build and maintain cloud- and browser-based AI and automation applications (internal and customer-facing). Integrate with third-party APIs (QuickBooks, Microsoft Graph, CRM, Zoom), implement AI workflows (OpenAI), automate business processes (Zoho, PowerAutomate), and ensure security and maintainability while working closely with leadership and IT.

Support enterprise-scale applications in secure environments. Develop UI components, collaborate with teams, and assist with Agile delivery and testing.

The role involves leading the development of a high-performance Web SDK for fraud detection and risk management, implementing algorithms for device fingerprinting, and ensuring security and performance optimization.

As a Backend Engineer, you'll design and implement secure APIs, build cloud-native products, optimize databases, and collaborate on enterprise security integration.

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

Seek a Senior React/JavaScript UI Developer for enterprise application support focusing on React, Vue, and secure coding principles within Agile.

The Software Engineer will develop using React and Ruby on Rails, collaborate with cross-functional teams, and contribute to building customer-centric solutions.

As a Staff Full-Stack Engineer, you will develop major product features, collaborating with users and engineers to ensure software reliability and performance.

Build end-to-end features in a JS/TS stack, designing scalable backend services and responsive real-time frontends. Improve observability, performance, and reliability, collaborate with product/design, and own full-stack implementation from APIs and data models to UI.

As a Senior Software Engineer at Flex, you'll design and maintain financial services architecture, mentor junior engineers, and ensure scalability and security for innovative financial products.