Top Lead Software Engineer Jobs in NYC, NY

Leads hands-on development of full-stack applications using .NET, React, Next.js, and Azure. Owns architecture, coding, code reviews, testing, security, reliability, observability, production support, and cloud deployment. Integrates AI and GenAI capabilities such as LLM features, RAG, semantic search, and agentic workflows. Mentors engineers, establishes technical standards, collaborates with stakeholders, supports hiring, and helps deliver scalable, secure software.

Lead technology projects and a developer team, create solutions meeting regulatory needs, and deliver cloud-based solutions for financial empowerment.

Lead design, build, and operate scalable, secure cloud platform capabilities. Develop Java/Spring Boot services, implement IaC with Terraform, run Kubernetes in HA, deliver CI/CD, apply SRE practices, use observability/APM tooling, and prototype AI/agentic workflows. Mentor engineers and enforce reliability, security, and compliance.

Lead platform engineering of reusable identity and onboarding components, build automation for journey deployment, establish eventing and observability, create developer-facing tools and migration tooling, mentor engineers, and drive responsible adoption of AI-assisted engineering practices and SDLC automation.

Owns complex, cross-system software solutions from architecture through production and support. Designs and deploys secure AI and agentic applications, integrates disparate systems and APIs, establishes engineering standards, and partners with business stakeholders. Works hands-on across the full stack while shaping architecture, testing, CI/CD, documentation, security, privacy, and governance practices for a growing internal engineering function.

Lead backend engineering portfolio and team to build cloud-based, distributed microservices and full-stack solutions. Mentor engineers, collaborate with product managers, and use modern languages, containers, orchestration, and cloud services to meet regulatory and business needs.

Design and develop backend services and APIs for identity resolution, optimize event-driven systems, and enhance system reliability. Mentor engineers and influence architectural decisions.

As a Lead Software Engineer, you'll design and develop GenAI platforms, integrate LLMs, mentor engineers, and solve technical challenges for scalable solutions.

Leads end-to-end modernization from a monolith to microservices, including legacy analysis, architecture, estimation, data migration, deployment, and production support. Guides .NET services, databases, messaging, containerization, and frontend integrations. Acts as the technical escalation point for complex issues while improving Jira tracking, estimation accuracy, QA collaboration, release predictability, and engineering processes. Manages and develops the team through one-on-ones, performance reviews, feedback, and career-focused objectives.

Lead ownership of Belfry's React Native/Expo mobile app and React web platform; establish frontend best practices, design systems, observability, and performance standards; contribute across the full stack (APIs, backend, integrations); deploy and scale production systems; mentor engineers and promote AI-assisted development workflows.

The Senior Lead Software Engineer will lead diverse technology projects, collaborate with product managers, and deliver cloud-based solutions while mentoring other engineers and utilizing various programming languages and technologies.

Lead a product squad in designing, building, and operating full-stack web applications. Own architecture, data models, APIs, interfaces, production support, technical standards, reliability, observability, and technical debt reduction. Mentor engineers, conduct code and architecture reviews, break down initiatives, and guide delivery. Partner with engineering, product, and QA leaders to shape requirements, manage risks, improve quality, and align technical decisions with business goals.

Design, build, deploy, and maintain resilient, scalable production systems for Toast’s retail customers. The role sets long-term technical architecture and strategy, communicates technical direction, mentors senior engineers, improves engineering productivity, diagnoses performance issues, and drives initiatives amid ambiguity. Engineers collaborate directly with retail customers, visit stores, understand operational workflows, and use AI tools to improve development velocity and quality.

Lead technical design, build, and operate scalable, secure healthcare integration systems. Drive architecture, event-driven distributed systems, APIs, observability, IaC, CI/CD, incident response, cross-functional delivery, and mentor engineering teams.

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

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 design, build, and operate high-performance Linux platforms for low-latency electronic trading. Perform kernel- and hardware-level performance engineering, write production automation, architect containerized and immutable deployment models, drive AI-assisted engineering adoption, and mentor cross-functional teams while governing engineering decisions and vendor relationships.

Designs, develops, tests, documents, deploys, and supports software applications. Builds and modifies business solutions using Java, J2EE, Spring, web services, relational databases, and Agile/DevOps practices. Applies object-oriented design, integrates dependent modules, develops automated tests and batch jobs, manages concurrent projects, troubleshoots production issues, and works with CI/CD pipelines, source control, Unix/Linux environments, and application architecture.

Lead design, implementation, and maintenance of scalable backend systems and services. Improve performance, reliability, and deployments; operate production systems (incident response rotation); conduct code reviews; mentor engineers; collaborate with product, sales, and customers.

Lead and mentor a team of engineers while contributing hands-on to complex features. Define architecture, drive development best practices, conduct code reviews, coordinate cross-functional requirements, and ensure timely delivery of high-quality ecommerce marketplace software.

Lead development and operation of a scalable Kubernetes-based cloud-native platform. Shape the engineering roadmap, deliver enterprise platform capabilities, establish best practices, mentor engineers, and collaborate across Agile teams. Build highly available and fault-tolerant production services using Kubernetes and cloud-native technologies, while applying expertise in Go, Python or Bash, networking, Linux, and CI/CD practices.

Lead technology strategy and architecture for Corporate Actions, Class Actions, and Securities Lending platforms. Oversee 20+ application teams to modernize legacy systems to cloud-native, API-first, service-oriented, and event-driven architectures. Champion AI-assisted development, DevSecOps, CI/CD, observability, and delivery governance. Drive vendor evaluations, cross-functional partnerships, engineering performance metrics, and talent development to deliver scalable, secure, and resilient enterprise solutions.

Lead the technical architecture and hands-on implementation of a cross-platform desktop app for Windows and macOS. Make framework, packaging, IPC, and auto-update decisions; implement core features (file integrations, notifications, clipboard, system tray); integrate with backend agent and AI services (streaming, auth); define engineering standards, testing, and performance benchmarks; and mentor/join a greenfield desktop engineering team while partnering with Product and Design.

Lead and mentor engineering teams to design and deliver cloud-based, full-stack microservices solutions. Collaborate with product managers, experiment with new technologies, and occasionally write or review code to meet regulatory and customer needs.

Lead the design and development of MediCircle's backend architecture and product features while managing full stack responsibilities and integrating AI technologies.