Top Principal Engineer Jobs in NYC, NY

Lead the architecture and operation of Managed databases for AI workloads, ensuring high-scale, low-latency solutions while mentoring teams on best practices.

The role involves enhancing application security for Radar, managing security for over 1 billion API calls daily, and collaborating with customers.

Lead the engineering architecture for an AI-driven product, focusing on system design, collaborating with AI agents, and ensuring quality and scalability in large-scale SaaS environments.

Lead architecture and delivery of NBCUniversals digital workplace platform across Microsoft 365, endpoint management, and enterprise AI. Define technical vision, SRE practices, AI governance, and drive global modernization, automation, and stakeholder alignment to improve employee productivity and reliability.

The Principal Software Engineer will design automated ad serving systems, lead technical direction, collaborate with teams, and mentor engineers.

Lead architectural decisions, mentor engineers, and drive technical strategies for scalable software systems, focusing on high-quality solutions and system health.

Design, build and own a petabyte-scale self-service real-time data enrichment platform. Lead query processing, ingestion pipelines, storage, indexing and performance optimization using Spark/Flink and Apache ecosystem tools. Deliver unified data catalog, improve query performance and platform efficiency, collaborate on technical reviews, and enable internal and external customers to query and extract data efficiently.

Lead Compute engineering for a global systems operations platform: architect and build cloud-native, containerized infrastructure; drive Aladdin migration to cloud; own IaC, container orchestration, CI/CD, observability, security and performance; mentor and lead global teams; define architecture and engineering best practices to scale platform services.

Design, implement, and deploy safety-critical navigation and state estimation systems for aerospace platforms. Develop EKF and GNSS/INS integration, multi-sensor fusion for GPS-denied environments, FDIR and integrity monitoring, and V&V test plans. Support certification, requirements allocation, performance analysis, flight test evaluation, and provide technical leadership and mentoring.

Lead design and optimization of low-observable aircraft features, perform electromagnetic signature modeling and simulation, direct RCS testing and validation, partner with materials and multidisciplinary teams to mature RAM and coatings, translate threats into survivability features, and support program assessments and milestone decisions.

Lead design and prototyping of generative AI experiences for autonomy development; drive UX for Hivemind products; perform user research, collaborate with CTO and product leads, and deliver reference implementations and integrations across full-stack web and edge systems.

This role involves leading technical projects across multiple teams, designing scalable systems, collaborating with cross-functional teams, and mentoring engineers, focusing on payroll and tax systems at Gusto.

The Associate Principal Engineer will provide strategic value through extensive IT experience and in-depth knowledge, fostering innovation and breaking new ground in product development.

Design and build complex low-latency trading applications, develop cloud services, implement automated processes, and optimize system performance.

Lead enterprise data architecture for Mastercard, modernizing data platforms and ensuring compliance, security, and operational excellence in a hybrid cloud environment.

The Principal Software Engineer, Data Architecture leads enterprise data architecture initiatives, modernizes data platforms, and mentors engineering teams while ensuring compliance and governance in global environments.

Design and scale critical, highly-available services; set technical direction across teams; apply best practices for availability, scalability, cost, and operational excellence; leverage AI tools and high-velocity workflows; mentor engineers and solve ambiguous, company-wide technical problems.

Serve as a global SME for Industrial Metaverse technologies (PLCs, IoT, cloud/edge, digital twins, AI, EMC/RED, cybersecurity). Lead standards work, develop test programs, perform and supervise complex testing, train staff, represent UL externally, and support clients and continuous improvement across regional or global labs.

Provide technical leadership for cross-functional teams, create and communicate technical vision and strategy, lead new initiatives without defined procedures, remove roadblocks, resolve issues, mentor engineers, and perform related duties. Remote role based in Canada; GM does not provide immigration sponsorship.

Own cross-team, platform-level engineering initiatives end-to-end: architecture, migrations, observability, on-call, and customer outcomes. Drive AI-native tooling and agentic AI adoption, mentor senior engineers, and set technical standards across teams.

The Principal Forward Deployed Engineer will lead client engagements, architect custom systems leveraging AI and optimization, and mentor team members, ensuring high standards in technical execution and client relationships.

The Principal Engineer will lead the design and delivery of core platform capabilities, focusing on scalable systems, AI application, and mentoring engineers while driving architectural decisions and improving operational systems.

Lead the multi-year modernization from Ember.js to Next.js, define enterprise web architecture and boilerplate, enable hybrid legacy/modern interoperability, champion AI-augmented SDLC, enforce technical governance for vendors, optimize developer experience and CI/CD, and drive performance (Core Web Vitals, RUM) and testing/observability to ensure high-scale, resilient e-commerce experiences.

Lead technical direction and architecture across telehealth, EHR, patient and clinician systems. Be a hands-on principal engineer writing production code, set engineering standards, mentor and direct offshore teams, own reliability and security (HIPAA/compliance), drive AI adoption, hire and build the onshore engineering org, and partner with the CEO to translate business and clinical needs into technical plans.

The Principal Software Engineer will design and implement systems for the advertiser experiences at Snap, lead technical vision, mentor engineers, and innovate on creator marketplace products.