Top Principal Engineer Jobs in NYC, NY

Lead GPU-edge inference systems, ensuring compliance and performance through design and monitoring. Manage global infrastructure for AI deployment.

Lead architecture and technical direction for an AI-first SaaS product (Growth Studio). Define scalable services, APIs, data flows, and AI-enabled workflows; guide integrations, run architecture/code reviews and POCs; mentor engineers; produce technical documentation; and partner with product, UX, QA, and ops to deliver reliable, secure, and maintainable platform capabilities for GovCon customers.

Hands-on technical leader and core individual contributor building cloud-native defense/intelligence software. Drive architecture, code reviews, feature delivery, and mentor a small Agile team while implementing DevOps, CI/CD, and robust AWS/EKS-based deployments.

Design and architect cloud-first, full-stack, scalable SaaS products; provide technical leadership, mentor engineers, promote automated testing and CI/CD, integrate AI/ML features (LLM/RAG), ensure observability and security, and collaborate with product, operations, and support.

Lead the Streaming Systems team, building high-throughput, low-latency infrastructure for real-time computation on billions of events. Mentor engineers and solve complex scaling challenges directly affecting marketing AI products.

The Principal Developer will lead the technical direction of the Exposure Management product area, contribute to architectural decisions, mentor engineers, and ensure high engineering standards across teams.

The Principal Software Engineer will lead architecture, mentorship, and technical execution for scalable systems, influencing product strategies.

Lead the design and implementation of an Internal Developer Portal. Mentor engineers, drive automation standards, and enhance engineering productivity for Mastercard's software development teams.

Lead cloud cost-optimization for an AI product: analyze and reduce LLM and infra spend, build cost tracking/forecasting tooling, advise on elasticity/caching, establish cost SLOs and alerts, and drive cross-team cost-reduction initiatives.

Build and maintain ZODL's core Rust-based wallet and infrastructure (Zallet and core libraries). Implement protocol features from specifications, improve performance and reliability, support mobile teams, participate in reviews, testing, releases, and respond urgently to bugs and security issues.

Lead design and architecture of cloud-first, full-stack enterprise software. Provide technical leadership, mentor engineers, promote automated testing and CI, improve scalability, troubleshoot issues, and deliver complex projects on time.

Lead technical strategy and architecture for Developer Experience: build scalable build/test/delivery systems, improve CI/CD throughput, design internal platforms/APIs/SDKs/CLIs, integrate LLM/agentic tooling safely, mentor senior engineers, and drive cross-team initiatives to increase engineering velocity, reliability, and maintainability at organizational scale.

Hands-on technical principal engineer responsible for architecture and hardest cross-cutting engineering-quality work (test automation, mutation/E2E testing, CI/CD, QA agents, and public API). Mentor senior engineers, set cross-team technical direction, identify systemic risk, and partner with SVP of Engineering on platform strategy and responsible AI usage.

Seeking an Associate Principal Engineer for QA Automation with extensive experience in manual and automation testing, scripting, and various automation tools.

Nagarro is seeking a Principal Engineer with extensive experience in .Net Web development to provide strategic value and lead initiatives.

The Associate Principal Engineer will leverage extensive IT experience and in-depth knowledge to add strategic value to the organization.

The role involves designing and developing enterprise solutions, leading marketing technology architecture, and integrating data platforms. Requires extensive experience in architecture and cloud technologies.

Looking for a Principal Engineer with extensive IT experience to provide strategic value and break new ground in digital product engineering.

Lead long-term technical strategy and execution across multiple teams, architecting and evolving foundational frontend/backend systems and platforms at massive scale. Drive AI/ML adoption, solve ambiguous, high-impact problems, remain hands-on in critical system design and implementation, and align senior leaders on roadmaps and engineering standards.

The Director, Solutions Engineering will lead the Solutions Engineering function, manage teams, develop technical solutions, and guide customers in evaluation and implementation processes across the customer lifecycle in Capital Markets.

The Principal Engineer will shape the technical strategy for messaging infrastructure, influence architectural decisions across teams, and solve complex technical problems. Responsibilities include mentoring engineers, driving coherence across teams, and leading initiatives to ensure Weave's competitiveness in messaging solutions.

Lead design and delivery of a cloud-native BaaS payments platform. Architect scalable distributed systems, define API contracts, drive CI/CD and TDD practices, mentor engineers, reduce technical debt, and partner with product teams.

Lead architecture, design, and delivery of PET product features; write production full‑stack code; champion testing, observability, CI/CD and operational readiness; mentor engineers and collaborate with product to shape technical roadmap.

The Principal Engineer will lead the technical ecosystem, ensuring hands-on execution in a high-growth environment, focusing on AI integration and full-stack development.

Lead architecture and technical roadmap for Twilio's Compliance Experiences platform. Modernize legacy systems into cloud-native microservices, drive AI-augmented development (LLMs/agents), ensure reliability/security at scale, mentor senior engineers, translate regulatory requirements into developer-friendly APIs, and steer cross-team technical strategy and incident remediation.