Top Software Engineer Jobs in NYC, NY

Own and evolve Vercel’s agentic infrastructure and build/deployment systems at scale. Design high-performance microservices, scalable APIs, resilient database schemas, and reliable workflows processing millions of builds daily. Lead projects from technical direction through production operation, improve performance and developer experience, collaborate cross-functionally, participate in on-call rotation, contribute to open source, and establish standards for scalability and reliability.

Build high-scale internal observability systems covering metrics, logs, traces, cost attribution, chargeback, compliance, and auditing. Partner with backend and platform teams to instrument services, evaluate observability infrastructure, and scale systems for Vercel’s production traffic. The role requires TypeScript, production experience with Go, Rust, or Zig, distributed systems expertise, cloud infrastructure knowledge, and familiarity with observability tooling.

Build and ship end-to-end full-stack features across frontend, backend, APIs, databases, and cloud infrastructure. Develop AI-powered capabilities, integrate external services, optimize performance, write unit and integration tests, conduct code reviews, mentor junior engineers, and participate in production support. Collaborate with product, design, and engineering partners to define requirements, make architectural decisions, and deliver reliable, accessible user experiences.

Design, build, test, and deliver scalable software features and subsystems for the Fan Engagement team. Maintain and improve production systems, participate in system design, solve moderately complex technical problems, collaborate with product and design partners, and mentor junior engineers. Contribute to testing, documentation, observability, reliability, and continuous improvement across the development lifecycle.

Build and ship full-stack software for CoreWeave’s internal data infrastructure and operational applications. Develop TypeScript, React, and Next.js frontends; Python services on Kubernetes; SQL queries and data models; and AI-enabled interfaces such as text-to-SQL tools, retrieval systems, and agents. Own scoped features through production, including testing and post-release fixes, while collaborating with senior engineers and internal users.

Software Engineering interns contribute to production features, applications, APIs, services, data ingestion pipelines, and machine-learning-enabled products. They participate in code reviews, deployment, observability, infrastructure as code, and production-readiness practices while collaborating with experienced engineers. Interns work in person from the Cambridge headquarters or New York City office and receive opportunities for technical learning, exploration, and cross-team development.

Develop and operate the Open DEX platform, enterprise API integrations, internal tools, automated workflows, and AI-assisted applications. Build secure, containerized cloud services and infrastructure using Python, Kubernetes, AWS, CI/CD, and infrastructure-as-code technologies. Diagnose production incidents, improve performance, establish reusable engineering standards, and collaborate with security, identity, infrastructure, and engineering teams.

Build and operate scalable software powering enterprise data science and AI platforms. Contribute across backend services, APIs, frontend features, and cloud integrations while working on high-impact projects. Collaborate with experienced engineers, apply modern software engineering practices, and learn technologies supporting reliable, reproducible, and compliant AI and MLOps solutions.

Designs, develops, and troubleshoots secure, scalable software solutions, including distributed systems, backend components, RESTful and event-driven microservices. Responsibilities include architecture discussions, performance optimization, data modeling, CI/CD integration, debugging, and mentoring junior engineers. The role also requires responsible use and validation of AI-assisted development tools, clear technical communication, and independent problem-solving on complex technical challenges.

Develop and deploy customer-focused web, mobile, and backend applications across the full software stack. Design major features, contribute to architecture decisions, conduct code reviews, and ensure secure, high-quality implementations. Collaborate with stakeholders and cross-functional teams using Agile and SDLC practices. Manage version control, CI/CD, environments, and releases; maintain automated test coverage and perform root-cause analysis. Build and optimize relational data solutions using SQL Server, including complex queries, stored procedures, and performance tuning.

Design, build, and maintain secure, scalable front-end applications using React and TypeScript. Deliver high-quality production code, integrate with APIs, apply modern CSS and responsive/mobile-first design, leverage enterprise AI-assisted development tools, produce architecture artifacts, enable journey orchestration and real-time UIs, and collaborate with product and stakeholders to create accessible, platform-facing tooling.

Design, build, deploy, and support scalable Java microservices on AWS. Provide technical leadership, architectural direction, code reviews, troubleshooting, proof-of-concept development, and cross-functional collaboration. Work with high-throughput data, messaging systems, distributed architectures, observability, and AI-assisted development tools. Participate in on-call support, mentor engineers, lead architectural initiatives, and deliver reliable SaaS platform features.

Build, optimize, and maintain software systems using AI while collaborating across disciplines to develop user-focused solutions. Apply secure coding practices, participate in code reviews, and contribute to high-quality features. The role involves working with front-end or back-end technologies, databases, cloud platforms, and AI-assisted development in a mission-driven healthcare technology environment.

Build, optimize, and maintain software systems using AI in an AWS and Kubernetes environment. Collaborate across disciplines on distributed, event-driven systems, learn new technologies in a fast-paced startup, and protect user privacy and security while supporting healthcare data and HIPAA compliance.

Build, optimize, and maintain software systems using AI; collaborate across disciplines to solve complex healthcare technology problems; and protect user privacy and security through strong engineering practices. The role works with AWS and Kubernetes in a fast-paced startup environment and involves learning new languages, frameworks, and techniques while supporting systems that analyze large-scale medical records.

Build AI-powered product features and scalable platform infrastructure for appointment-based businesses. Engineers own work end to end, from technical design through production, while using AI to architect, debug, write, and review code. The role emphasizes system reliability, performance at scale, entrepreneurial ownership, rapid iteration, and collaboration. Candidates must be commutable to the New York City headquarters and work onsite three to four days per week.

Build and maintain backend systems powering Cash App Taxes, including federal and state tax form logic and e-file submission. Translate complex tax rules into reliable, tested software; create tools enabling safe changes by nontechnical contributors; and guide architecture, security, scalability, deployment, and documentation practices. Collaborate with product, tax specialists, QA, cloud platform, design, and customer care teams while resolving accuracy, reliability, and performance issues.

Build and maintain backend systems powering Cash App Taxes, including federal and state tax logic and e-file submission. Translate complex tax requirements into reliable, scalable, well-tested software; create tools enabling safe contributions; make architectural decisions; and improve accuracy, performance, security, deployment, and documentation. Collaborate with tax specialists, product, QA, cloud platform, design, customer care, and other teams while applying AI coding tools and best practices.

Own the development and maintenance of large-scale React Native applications for iOS and Android. Lead architecture improvements, React Native upgrades, native module development, performance optimization, automated testing, CI/CD reliability, and production debugging. Collaborate with cross-functional product pods, contribute to technical discovery and architecture, mentor engineers, and raise engineering standards while delivering scalable, maintainable mobile experiences.

Design, develop, troubleshoot, and maintain full-stack cloud-native applications using Java, Spring Boot, Spring Cloud, TypeScript, APIs, microservices, and AWS. Build resilient backend services and agentic workflows, implement infrastructure as code, reactive programming, CI/CD, observability, and performance testing. Support production stability across distributed systems and data platforms, while integrating front-end functionality and exploring agent-to-UI and agent-to-agent interactions.

Design, build, and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, and test reliability while owning services end to end, including SLOs, observability, and on-call responsibilities. Partner with engineering teams to address platform pain points and lead cross-cutting technical projects through production.

Design, build, test, and scale Gusto’s payments infrastructure and platform. Make architectural decisions focused on fault tolerance, scalability, and modularity; modernize Ruby/Rails and TypeScript/React systems; collaborate across engineering, product, design, data science, and operations; deliver software supporting millions of businesses; and mentor fellow engineers.

Develops secure, scalable Java applications and critical technology solutions within an agile team. Responsibilities include software design, coding, testing, troubleshooting, architecture documentation, system stability, data analysis, and continuous improvement. The role uses AI-assisted development tools responsibly, validates generated outputs, contributes automation practices, and supports secure coding, CI/CD, resiliency, and enterprise software delivery.

Develop and integrate scalable backend software for real-time bidding and digital advertising systems. Build RESTful APIs with Python, Django, and PHP; manage Kubernetes/EKS and AWS production deployments; participate across the SDLC, including requirements analysis, testing, deployment, and integration. Collaborate cross-functionally, troubleshoot complex issues, support system reliability, conduct code reviews, mentor engineers, and promote engineering best practices. The role is onsite in New York four days per week and may require nights or weekends.

Develop and maintain FreeWheel AdManager SDKs across Web, iOS/tvOS, Android, and Connected TV platforms. Design APIs, improve performance and reliability, support video-player integrations, troubleshoot production issues, participate in testing and releases, collaborate cross-functionally, and mentor engineers. The role requires strong software engineering fundamentals, client-platform development experience, SDK or reusable-component development, debugging, automated testing, CI/CD, and effective communication.