Top Senior Full-Stack Engineer Jobs in NYC, NY

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.

Seeking a Senior Software Engineer with 7+ years of experience, proficient in Rails and Python, to develop applications and shape engineering culture.

Leads major technology projects and engineering teams developing large-scale, distributed, cloud-native systems. Responsibilities include full-stack design and implementation, technical architecture, platform roadmap development, cloud solution delivery, reliability and performance optimization, regulatory technology support, mentoring engineers, and establishing technical standards across teams. The role uses modern programming languages, databases, container orchestration, AWS services, observability practices, and AI-enabled development tools.

Own full-stack projects from architecture through deployment and production support. Build scalable web applications and backend services with Node.js, NestJS, Hono, or Express; create frontend experiences with React, Next.js, and React Native; and work with PostgreSQL databases. The role includes architectural decision-making, observability, performance optimization, code reviews, CI/CD, and collaboration with design and engineering teams to deliver products used by millions of members.

Designs, develops, and maintains scalable full-stack applications and data flows for investment technology. Builds proofs of concept, reusable components, enterprise integrations, and modern AI capabilities. Applies Generative AI, LLMs, cloud technologies, and software engineering practices to improve automation and business outcomes while collaborating across teams.

Design, develop, and maintain scalable full-stack applications and data flows supporting investment technology. Build enterprise software, APIs, reusable components, prototypes, and generative AI capabilities. Collaborate with product, architecture, engineering, business, and offshore teams; evaluate emerging technologies; improve automation and productivity; and deliver secure, reliable solutions. The role requires strong software development, cloud, data engineering, DevOps, SDLC, communication, and stakeholder collaboration skills.

Designs and develops scalable full-stack applications, enterprise integrations, APIs, and data flows across trading, accounting, and data warehouse platforms. Builds reusable software components, conducts technology proofs of concept, and applies Generative AI and LLM technologies to improve investment business processes. Collaborates with product, architecture, engineering, business, and offshore teams while ensuring reliable, secure, maintainable solutions. Requires extensive software development, cloud, data engineering, CI/CD, and financial technology experience.

Leads large-scale full-stack engineering initiatives, technical architecture, and developer teams building distributed, cloud-native systems. Designs reliable microservices and platform solutions using modern programming languages, databases, containers, and cloud services. Partners with product leaders and architects on technology roadmaps, mentors engineers, establishes engineering standards, drives observability and performance improvements, and leads cross-functional technical initiatives.

Architect and build the Global Payment Network’s real-time and batch data infrastructure, including event-driven pipelines, canonical data models, metadata and catalog systems, streaming, storage, and low-latency services. Establish technical standards for scalable distributed systems, partner with fraud, analytics, modeling, product, and risk teams, and mentor engineers as a senior individual contributor without direct reports.

The Senior Full-Stack Engineer will manage client relationships, design integration solutions, and ensure seamless delivery and optimization of technical workflows, while leveraging AI for efficiency.

Build and scale full-stack products for child care businesses, agencies, and government organizations. Responsibilities include developing React and TypeScript frontend features, designing Node.js and Express backend APIs, operating cloud systems, improving performance and reliability, managing technical debt, conducting code reviews, collaborating cross-functionally, and engaging directly with customers. The role owns complex projects end to end and emphasizes rapid delivery, product impact, security, maintainability, and modern AI coding tools.

Design, develop, and maintain scalable enterprise software for investment technology. The role involves building applications, conducting prototypes and proofs of concept, advising on technical direction, creating reusable components, integrating vendor APIs, and collaborating with global cross-functional teams. Engineers will use modern cloud, containerization, AI, application development, database, reporting, and DevOps technologies while continuously evaluating architecture trends and improving engineering practices.

Develop and maintain a full-stack web application and platform for fraud analysis. Build APIs and user interfaces, write automated tests, troubleshoot production issues, collaborate with product, design, data science, infrastructure, and solutions engineering teams, and participate in on-call support. Use React, Golang, Python, PostgreSQL, Docker, and AWS technologies to deliver reliable products and meet service-level requirements.

Develop and maintain a fraud-analysis web application and platform. Build APIs and user interfaces, write automated tests, troubleshoot production issues, collaborate with product and cross-functional teams, analyze product metrics, and support SLA compliance through production on-call rotation.

Leads full-stack software engineering teams and technology portfolios within Risk Tech. Responsibilities include setting technical strategy, managing multi-team delivery, mentoring engineering leaders, defining roadmaps, building cloud-native distributed systems, supporting regulatory solutions, and aligning engineering execution with enterprise goals. The role involves Java, Python, JavaScript, TypeScript, cloud platforms, microservices, databases, containers, AI technologies, and occasional coding or code evaluation.

Leads technical vision and architecture for customer resiliency systems. Designs scalable, operable solutions; modernizes monoliths into microservices and event-driven platforms; establishes API and engineering standards; and contributes hands-on across the software lifecycle. Collaborates with senior leaders, mentors engineers, drives cross-divisional initiatives, promotes engineering excellence, and advises on enterprise architecture, cloud computing, data architecture, performance, and scalability.

Build and ship custom full-stack programs for AI labs and product teams, including capture flows, task logic, data pipelines, validation, redaction, provenance, and delivery across web, mobile, and backend systems. Partner directly with technical customers to scope ambiguous requirements, determine what to reuse or build, ship production code, establish data quality processes, and turn repeatable custom solutions into core platform capabilities.

Lead large-scale full-stack engineering initiatives, guide multiple development teams, and shape architecture and technology strategy. Design and implement reliable cloud-native systems using distributed microservices, modern programming languages, databases, containers, and cloud platforms. Partner with product and architecture leaders, establish engineering standards, mentor senior engineers, drive observability and performance improvements, and deliver solutions supporting regulatory and customer needs.

Develop and operate CrowdStrike’s internal cloud management platform and mission-critical CI/CD pipelines. Build APIs and UIs using Go and TypeScript, improve developer productivity, integrate tooling, maintain cloud-native infrastructure, and support secure, highly available software delivery systems. Collaborate with development, infrastructure, security, and SRE teams, ensure SOC2-aware processes, and participate in on-call operations.

Leads multiple technology projects and engineering teams developing large-scale, distributed, cloud-native systems for risk and regulatory management. Provides technical leadership in architecture, platform roadmaps, reliability, performance, and shared services. Builds full-stack solutions using modern programming languages, cloud platforms, microservices, databases, containers, and AI-enabled tools. Mentors engineers, drives technology strategy, establishes engineering standards, and partners with product leaders and architects across the organization.

Build and ship full-stack features for a payments-focused web platform. Responsibilities include scoping ambiguous product problems, making architectural decisions, developing JavaScript front-end and Node.js back-end functionality, translating operational processes into software, collaborating with non-technical stakeholders, and using AI tools and automation in development.

Build and operate backend services, APIs, AI agent tools, EHR and health system integrations, durable workflows, and application architecture using TypeScript/Node.js and Python. Develop full-stack features with React, own production reliability and observability, and implement CI/CD, monitoring, incident response, HIPAA-grade security, and audit logging. Partner with AI, product, deployment, and customer teams to deliver scalable healthcare integrations.

Designs, develops, tests, deploys, and maintains software applications, databases, reports, and APIs. Responsibilities include requirements analysis, database schema and SQL development, production support, documentation, technical research, effort estimation, and collaboration with business analysts and IT staff. The role supports multiple projects, assists other developers, and may provide after-hours support for emergencies and production releases.

Develop Python-based margin calculation, collateral optimization, analytics, and rule-engine solutions for securities finance. Integrate pricing, risk, and collateral platforms through APIs and distributed processing. Build Angular and Next.js applications for margin workflows, dashboards, and alerts. Optimize performance, automation, and cloud-native deployments while partnering with Quant, Risk, and Operations teams. The role requires deep capital-markets software development experience, quantitative programming skills, and knowledge of margin, derivatives, repo, securities lending, and collateral management.

Leads full-stack software engineering teams and a portfolio of large-scale technology projects. Drives technical strategy, architectural decisions, cloud-native system design, engineering roadmaps, delivery, regulatory solutions, and organizational development. Mentors engineering leaders, manages succession planning, aligns execution with enterprise goals, and oversees distributed systems using modern programming languages, databases, containers, and cloud platforms.