Top Full-Stack Engineer Jobs in NYC, NY

Design and build AI-centric full‑stack TypeScript web applications (SPAs and APIs). Collaborate on product and architecture, own technical decisions, mentor peers, perform code reviews, and manage project priorities and deliverables.

The Staff Software Engineer will lead technical direction in programmatic AdTech, integrating AI and data solutions, while mentoring the engineering team.

Lead a portfolio of technology projects and an engineering team to design and deliver distributed microservices and full‑stack, cloud‑based solutions. Collaborate with product managers, mentor engineers, evaluate or produce code, and leverage languages, databases, container orchestration, and AWS/GCP/Azure tools to meet regulatory and customer needs.

Develop fullstack web applications, enhance platform performance, collaborate on high-impact opportunities, and ensure stable, scalable solutions. Engage in rapid iterations and be a committed team player.

Lead and mentor a team building distributed microservices and full‑stack cloud solutions. Collaborate with product managers to deliver secure, scalable AWS-based applications using modern languages, containers, and databases while driving technology adoption and regulatory compliance.

Lead a team building full‑stack, cloud‑based microservices and web solutions for card technology regulatory needs. Mentor engineers, collaborate with product managers, and deliver scalable AWS containerized systems using modern languages and databases.

Join JotPsych as a Generalist Full-Stack Engineer, shipping user-facing features end-to-end and contributing to architectural improvements in a small, collaborative team. You will own multiple projects and leverage AI tools in a dynamic work environment.

Design, build, and optimize full-stack mobile and desktop web applications. Implement user interfaces, contribute to shared libraries, log and analyze metrics, use AI tools to accelerate development, and maintain high standards for code correctness, security, testing, performance, and scalability.

The Senior Full Stack Developer will lead full stack development, mentor engineers, refactor services, and uphold system performance and security standards in a hybrid work environment.

Develop and maintain advisor payment systems; collaborate with cross-functional teams to enhance user experience and financial transparency; manage backend services.

Build end-to-end fullstack features for a mental healthcare platform: design APIs and UIs, manage clinical and practice-management systems, integrate AI capabilities, and own product outcomes from schema to frontend.

Lead a team building distributed microservices and full-stack cloud solutions using JavaScript, Java, Python, Go, React, containers, and AWS. Mentor engineers, collaborate with product managers, drive regulatory-focused technology projects, and experiment with new technologies and AI tooling to improve developer productivity and customer experiences.

Headway seeks a Staff Fullstack Engineer to own end-to-end product work across frontend and backend. You’ll build practice management, patient/provider engagement, AI-enabled clinical systems, onboarding, growth tools, and platform foundations. The role requires technical leadership, cross-functional strategy, mentoring, and shipping scalable, reliable systems in a complex healthcare domain.

Lead a team delivering full-stack, cloud-native microservices and applications. Collaborate with product managers, mentor engineers, experiment with emerging tech, and build solutions using JavaScript/Java/TypeScript/Python/Go, containers, databases, and AWS to meet regulatory and customer needs.

Lead a portfolio and team building distributed microservices and full‑stack cloud solutions to meet regulatory needs. Mentor engineers, collaborate with product managers, evaluate and write code, and use modern cloud, container, database, and language technologies.

Lead architecture, modernization, and development of Group Insurance applications. Modernize mainframe monoliths into Java microservices and micro-frontends on cloud, mentor distributed Agile teams, collaborate with enterprise architecture, product owners and infrastructure, and enable test automation and integrations. Approximately 10% domestic travel.

Designs, develops, tests, and maintains secure, scalable Java-based applications. Produces architecture artifacts, implements automated unit tests, analyzes large datasets, and improves system resiliency within agile teams.

Lead a portfolio and team building cloud-based, full-stack systems and distributed microservices. Mentor engineers, collaborate with product managers, design and deliver scalable AWS solutions, and occasionally write or review code. Drive technology experimentation and participate in internal/external communities to meet regulatory and customer needs.

The role involves leading application performance improvements across multiple platforms, focusing on measurable metrics and driving engineering standards and workflow optimization, using both hands-on coding and strategic influence.

Build and own Eve's marketing site and GTM engineering stack: integrate and optimize external tools, design AI agents for sales and marketing, implement webhooks and middleware to sync product/CRM data, and create programmatic campaigns and internal tools in partnership with Marketing, Sales, RevOps, and Product to drive growth and automation.

Lead frontend-leaning full-stack implementation work for carrier and enterprise integrations: architect reusable UI and API layers, author RFCs, guide technical delivery, enforce testing and security best practices, and partner with cross-functional teams to scope and ship production integrations.

Modernize a large fintech platform by building NestJS services and Next.js UIs, migrate transactional data to relational schemas, write comprehensive tests, identify and fix legacy problems, design scalable solutions that coexist with legacy systems, and use AI tooling responsibly to increase engineering velocity.

As a Senior Full-Stack Software Engineer, you will develop and enhance software platforms, focusing on backend services, APIs, and front-end applications, while mentoring junior developers and collaborating with cross-functional teams.

As a Full Stack Engineer, you'll develop online services features using C#, React, and ensure best practices in software development. Collaboration with global teams is key.

As a Full Stack Developer, you'll build cloud-native applications, develop scalable APIs, and implement CI/CD processes, while collaborating with cross-functional teams.