Top Principal Software Engineer Jobs in NYC, NY

Design, build, and operate highly available reference/master data systems for a hedge fund. Lead architecture, cloud microservices, LLM/agentic solutions, and cross-functional projects while mentoring engineers and improving reliability, security, and performance.

Lead design and build of production-ready cloud and AI systems, prioritize security and reliability, ship solutions quickly using modern engineering practices, collaborate with cross-functional teams, mentor engineers, drive customer adoption, and deliver reusable assets and end-to-end complex deliveries.

Seeking Senior, Lead, or Principal Engineers for backend roles in building scalable AI-powered supply chain solutions, focusing on data integration and platform architecture.

The Principal Software Engineer will define and drive architectural solutions for streaming media across Disney's platforms, lead cross-functional collaborations, and champion best practices in system design and operational excellence.

The Principal Software Engineer will lead the architectural direction and improvement of metadata management systems for Disney's streaming services, leveraging advanced technologies and best practices in software development.

Lead QA for a high-value billing platform: build agentic/AI-driven test tooling, validate streaming and batch billing logic, automate CI/CD testing, support revenue forecasting and cross-functional billing coverage.

Architect and deliver high-performance, scalable platform services across GitHub (Actions, Identity, Billing, Git systems, DB infra). Lead design through production, mentor engineers, own reliability and on-call responsibilities, design APIs, collaborate cross-functionally, drive roadmaps, and champion security and operational excellence.

Design, build, and operate large-scale, highly available platform services across GitHub (Actions, Enterprise AI, Identity, Billing, Git systems, database infrastructure). Provide technical leadership, mentor engineers, own architecture and APIs, participate in on-call incident response, drive reliability, security, testing, and roadmap decisions across cross-functional teams.

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.

Lead architecture and implementation of a self-contained control plane and data plane to provision and manage on‑premises Apache Airflow across hybrid and air‑gapped environments. Design extensible APIs, telemetry/observability, Kubernetes operators and deployments, ensure security and backward compatibility, and provide technical leadership, design reviews, and senior mentorship.

Design and implement PostgreSQL internals, indexing, query engine extensions, and storage-layer features to support large-scale document workloads on Azure. Profile distributed systems, tune performance, collaborate with open-source communities, conduct design/code reviews, and drive cross-team alignment for mission-critical database features.

Lead design and implementation of scalable data ingestion, transformation, and search systems for security telemetry. Build and maintain event-streaming pipelines, integrate third-party data sources, partner with product stakeholders, apply AI agents for data mapping and correlation, set engineering standards, improve observability and testing, and mentor junior engineers.

Lead company-level technical direction for an AI-native insurance platform. Own architecture across AI, data, infrastructure, and product; resolve high-impact technical decisions; establish org-wide engineering standards; and mentor senior engineers while partnering with founders to shape long-term technical vision.

Lead architecture and implementation to scale a large Kubernetes-native microservice platform into cell-based deployments. Decompose services, build shared libraries and configuration frameworks, enable private/isolated cloud deployments, land changes in product services, set architecture patterns, partner with Cloud Platform/SRE/DevEx, mentor senior engineers, and embed AI tooling into development workflows.

Lead technical strategy to scale a multi-ecosystem libraries platform: generalize package indexing, build orchestration, and remediation automation from CVE detection to verified release. Drive agentic/AI-driven patch generation, set platform architecture and SLOs, mentor senior engineers, own incident response, and get hands-on resolving toolchain, compiler, and packaging failures for new ecosystems (.NET, Go, Rust).

Lead cross-functional teams to define and evolve platform and application architecture, introduce new technologies and best practices, solve cross-team technical challenges, guide global cloud and regulated (FedRAMP) deployments, and mentor engineers while driving engineering quality, observability, and production readiness.

Build and own AI-native, full-stack systems across underwriting, claims, operations, and member products. Ship end-to-end products using frontend, backend, and AI infrastructure, redesign workflows, automate manual operations, and collaborate directly with operational teams to scale insurance systems.

Lead design and implementation of large-scale Pub/Sub and messaging services within Azure Event Grid/Microsoft Fabric. Define scalable, reliable architectures, drive testing and CI/CD automation, build developer tooling, mentor engineers, manage incident response and operational excellence, and collaborate with PMs, EMs, researchers, and customers to deliver production-ready cloud services.

Lead architecture and implementation of Revenue Hub (CPQ, Billing, Payments). Design APIs, domain models, and platform contracts; build and ship distributed, event-driven systems; ensure financial correctness and safe AI-agent interactions; own large cross-team initiatives; mentor senior engineers and drive platform patterns, reliability, and extensibility.

The role involves designing and developing secure software solutions, focusing on innovative sensor technology for Linux environments, and enhancing customer adoption through collaboration.

Design, develop, and maintain scalable software solutions. Collaborate with teams to troubleshoot issues and enhance the software delivery lifecycle. Focus on backend services, using Java and various tools for performance optimization.

The Principal Software Engineer will lead technical initiatives, align cross-functional teams, establish standards, and guide multiple engineering teams towards strategic objectives, driving large-scale improvements in business outcomes.

Lead design and build of a 0-1 Identity Graph platform for real-time identity resolution. Own architecture, implement high-performance synchronous read models, build data pipelines, enforce PII privacy boundaries, ensure production resilience and observability, and mentor engineering teams while aligning cross-team stakeholders.

Design and operate large-scale, AI-native cloud infrastructure (especially Kubernetes/AKS). Improve service quality, automate incident prevention/remediation, accelerate engineering productivity, and integrate AI tools into development workflows.

Work with customers and cross-functional teams to design, build, and deliver cloud-based solutions. Lead design, identify dependencies, mentor engineers, act as DRI and on-call, and improve availability, reliability, observability, and performance. Contribute to open-source assets and collaborate with Microsoft product teams to produce extensible, maintainable code and scalable solution patterns.