Full Stack Developer Jobs in New York, United States

The Technology Associate role is part of Healthfirst's 2026 Technology Early Career Development Program, designed for recent college graduates passionate about technology. This full‑time position offers an immersive curriculum, on‑the‑job, virtual, and in‑classroom training across 13 technical or business delivery teams.

CALS iMapInvasives Full Stack Developer at Cornell University builds and maintains the iMapInvasives platform, a GIS‑enabled web application for tracking invasive species. The role balances front‑end React/ArcGIS API work with back‑end Java/SQL services, ensuring secure, scalable cloud deployment on AWS. Based in Geneva, NY, the position is hybrid—remote two days per week and on‑site three days.

Full Stack Developer role at Contact Government Services, LLC. Develop web applications, APIs, and scripts using JavaScript, Angular, Node.js, and TypeORM. Build tests, automate processes, guide version control, enhance security, and leverage metrics for decisions.

SS&C Technologies, a leading financial services and healthcare technology company, is hiring a Full Stack Developer to work in its Palm Beach Gardens, FL and New York offices. The role involves planning, directing, and coordinating all software development and implementation activities across multiple lines of business, collaborating with the CTO and line‑of‑business leaders.

Engineering team at Zealthy builds a virtual healthcare platform to expand high-quality care access. The Full Stack Developer iterates on the early product, collaborates with a small engineering group and the CEO, and contributes to front‑end, back‑end, architecture and DevOps decisions.

Engineering Team at AI2CYBER builds advanced enterprise-grade software platforms for cybersecurity. The Full Stack Developer designs and implements Python‑based back‑ends and React front‑ends, creates scalable REST APIs and data‑intensive dashboards, and ensures performance, security, and clean architecture.

Design, develop, maintain secure, scalable web and mobile apps using Microsoft stack, Optimizely CMS/Commerce, and modern front-end frameworks. Build responsive UI with JavaScript, ReactJS, jQuery, Bootstrap, HTML5, CSS3.

Horizon Commerce, a full-service commerce agency based in New York, seeks a Full Stack Developer (Temp) to deliver client frontend and backend website engagements primarily on Salesforce Commerce Cloud (SFCC). The role reports to the Lead Solutions Architect within the Commerce Experience org and requires deep expertise in SFCC implementations, including Business Manager, ISML, JavaScript, CSS, HTML, XML, Node.js, and modern React frameworks such as Next.js and Gatsby.

Platform Engineering team builds scalable web platforms for complex lending data. The Senior Full Stack Developer leads architecture and implementation of RESTful APIs, integrates multi‑model NoSQL databases, and drives code quality across Java, Python, and JavaScript stacks.

Full Stack Development Manager at BMO Bank of Montreal leads a development team in a banking organization, building dynamic, visually‑attractive software products with front‑end (Typescript, React) and back‑end (Java, PostgreSQL, AWS) technologies. The role manages the complete software development lifecycle, from conception to deployment, ensuring performance optimization, stability, and scalability.

Senior Full Stack Developer at Vanguard Group building next-gen quantitative research platforms in cloud. Lead design, architecture, and deployment of AWS-based applications.

Democorp Technology team drives growth of the Tax & Accounting business unit by delivering SaaS tax software solutions. The Senior Full Stack Developer will lead territory development, manage multiple sales cycles, respond to RFIs/RFPs, demonstrate product value, and negotiate contracts while leveraging Salesforce and other tools.

Digital team at The Real Deal builds and scales digital products, including a real estate analytics platform powered by large datasets. The Full Stack Developer works across the stack to deliver user‑facing features, data‑driven interfaces, and performant web applications, collaborating with product, design, and business teams.

Full Stack Developer at Pharo Management builds next‑generation front‑office technology tools for web and mobile. The role designs and develops React‑based UIs, integrates with .NET 6+ and Python back‑ends, and ensures high‑performance, accessible experiences.

SS&C Technologies, a leading financial services and technology firm, seeks a Full Stack Developer to architect and deliver scalable software solutions across multiple business lines. The role drives vision, sets development standards, prioritizes projects, and ensures quality and security while collaborating with the CTO and stakeholders.

Pfizer seeks a Director of Full Stack Development to architect and lead complex software initiatives across the organization, driving innovation and improving patient outcomes. The role blends technical leadership, Agile project management, and cross‑functional collaboration to deliver robust IT solutions that support research, manufacturing, and business operations.

Charles River Associates is seeking a Full Stack Agentic Developer to build and evolve a web‑based AI platform that lets experts translate domain knowledge into scalable AI‑driven workflows. The role designs and implements React/Vite front‑end features, Node.js/TypeScript back‑end services, and integrates LLM provider APIs, real‑time streaming, and custom agent runtimes.

Technology team at Judi Health builds a comprehensive enterprise health platform to improve healthcare experiences for millions. The Full Stack Software Developer designs and implements scalable web applications using Python, React, and AWS, collaborates with senior engineers, and contributes to the full software development lifecycle.

Technology team at UpClear builds a SaaS revenue management platform for consumer goods brands. The Full Stack .Net Developer creates and maintains Angular front‑ends and C# back‑ends, writes clean code, and collaborates with cross‑functional teams to ship new features.

Technology team at Democorp builds scalable web platforms that power core business services. The Full Stack Ruby Developer designs, implements, and maintains end‑to‑end features using Ruby on Rails and modern front‑end frameworks, collaborating with product, design, and QA to deliver high‑quality releases.