Top Senior Full-Stack Engineer Jobs in NYC, NY

Lead diverse technology projects, collaborate on cloud-based solutions, mentor developers, and stay up-to-date with new technologies in software engineering.

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.

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.

Lead design and build of New York Life's enterprise AI platform and agentic solutions. Work across cloud-native infrastructure, model and agent lifecycle, RAG knowledge systems, multi-agent orchestration, MLOps/LLMOps, governance, CI/CD, observability, and production operations. Partner with security, legal, and architecture to embed responsible AI and deliver production-ready, compliant AI systems.

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 AI-native, governed engineering harnesses and full-stack microservice systems. Design agentic orchestration, typed contracts, observability, CI/CD integration, and developer tooling to enable safe, auditable LLM-driven workflows in cloud environments.

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.

As a Senior Software Engineer, you'll design, develop, and maintain full-stack applications, utilizing TypeScript and modern frameworks while collaborating cross-functionally to enhance user experience and performance.

Lead redesign of core data models, expand and improve the reporting system, and build user-facing automation to streamline repeated workflows. Work autonomously to take features from conception through delivery while collaborating with stakeholders and raising engineering standards.

Build and ship full-stack features for North, develop autonomous agents that access sensitive enterprise data, productionize state-of-the-art models, write minimal, secure low-resource code, and collaborate with researchers to deploy performant RAG/agentic applications while prioritizing security and user experience.

Lead design, architecture, and delivery of scalable finance-focused reporting, modelling and analytics systems. Build full-stack solutions using Java/Scala/Python and Angular, leverage Snowflake and cloud platforms, drive GenAI/Copilot adoption, enforce CI/CD and automated testing, mentor engineers, manage stakeholders, and champion agile practices and technical excellence.

Lead backend-focused fullstack development, collaborate with Data/ML teams to design and deploy scalable, performant systems; own architecture, select tech stacks, and balance tradeoffs for rapid iteration and production deployment.

Own and ship new product features in a React + Node.js stack, design and scale AI-driven workflows (video validation, content categorization, creator-brand matching), set engineering standards, lead code reviews, mentor teammates, and collaborate cross-functionally to deliver end-to-end solutions.

Develop and enhance features for an AI-powered sales platform, improving user experience and performance, while driving technical excellence and collaborating with product and design teams.

Lead end-to-end design and implementation of consumer and chef-facing product features. Partner with Product, Design, Data, and Ops to define requirements, ship improvements, and iterate using analytics. Improve code quality, testing, observability, performance, and reliability. Mentor engineers and contribute to architecture and technical strategy in a high-growth startup environment.

As a Senior Full-Stack Software Engineer, you will design, develop, and scale infrastructure for core experiences at Brex, work on backend APIs, frontend UX, and lead technical efforts across teams.

Lead full-cycle projects impacting millions and collaborate with product and UX teams to define requirements and execute development plans.

Hands-on senior full-stack engineer who designs, builds, tests, and deploys front-end and back-end applications. Leads technical execution, mentors junior developers, contributes to architecture and tooling, ensures security/compliance, streamlines SDLC with automation and AI-assisted tools, and partners with product and stakeholders to deliver scalable, production-ready software.

Design and build a high-performance, AI-native web trading experience for sophisticated retail traders. Ship core trading workflows (order entry, positions, blotter, watchlists, alerts), implement trustworthy AI UI patterns, collaborate with backend engineers on low-latency contracts, and iterate quickly with users and stakeholders to deliver end-to-end product features.

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 ship features for Cohere’s North AI workspace platform, develop autonomous agents that interact with sensitive enterprise data, and deploy highly performant, secure applications in low-resource environments. Collaborate with researchers to productionize advanced AI models and techniques while contributing across the full stack using Python and React.

Senior Full Stack Engineer (backend-focused) to design, build, and operate scalable backend systems and APIs, deliver full-stack features, improve reliability and observability, and contribute to architecture and technical strategy in a fast-paced startup environment.

The Senior Full Stack Engineer will design, develop, and deploy scalable web applications using Node.js, NestJS, and React, with a focus on payment integrations and security best practices.