Top Principal Software Engineer Jobs in NYC, NY

Design and build Azure Kubernetes Service features and AI-native infrastructure, improve service reliability and developer velocity, automate incident prevention/remediation, integrate AI tools, and operate distributed, containerized systems at cloud scale.

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.

The Principal Software Engineer will lead architectural design, mentor engineers, influence technical strategy, and drive AI-augmented development across the platform, ensuring high-impact project delivery in healthcare technology.

The Principal Software Engineer leads technical vision and strategy for the division, mentors staff, and drives architectural standards across multiple business units.

Responsible for technical architecture and system design, ensuring stable production across platforms, guiding decisions, and mentoring the engineering team.

The Principal Engineer will design scalable backend services and APIs, optimize performance, and improve developer experience while collaborating with AI/ML experts and legal specialists.

Lead architecture and technical strategy across an infrastructure platform ecosystem. Drive hands-on architectural improvements to graph engine and backend services, reduce technical debt, establish standards, champion AI-first engineering practices, run architecture/code reviews and mentorship, and collaborate with product and leadership to ensure scalable, extensible systems.

Lead design, development, and support of enterprise infrastructure and services. Drive architecture discussions, prototypes, capacity planning, and system launches. Troubleshoot performance, collaborate across teams and open-source communities, document solutions, and support on-call rotations to ensure reliable, scalable cloud and Linux-based systems.

Design and deliver large-scale, cloud-native and AI-enabled Kubernetes/AKS solutions. Implement, optimize, and maintain Kubernetes components and container orchestration across Azure, on-prem, and edge. Integrate AI capabilities, participate in on-call rotations, mentor engineers, and collaborate cross-functionally to improve reliability, observability, performance, and operational consistency at scale.

Build and own end-to-end, AI-native full-stack systems across underwriting, claims, finance, and member products. Ship products using React/React Native, TypeScript, Python, and Postgres; design retrieval/memory/evaluation systems; collaborate with operational teams and AI engineers to eliminate manual work and scale core insurance infrastructure.

Lead design and implementation of Azure full‑stack, scalable skilling platform features. Drive CI/CD, reliability, automation, and AI/LLM-enabled capabilities. Mentor engineers, enforce engineering best practices, coordinate cross-team dependencies, and improve test automation and observability for enterprise-scale services.

Design and deliver large-scale, resilient AI and Kubernetes infrastructure for hybrid environments. Implement, optimize, and maintain cloud-native, container orchestration solutions; integrate AI capabilities; participate in on-call rotations; mentor engineers and drive reliability, observability, and performance at scale.

Design, implement, and maintain high-quality, highly available microservices for Azure Messaging and Fabric. Drive AI adoption to improve development practices, optimize system IO and performance, and lead innovation in product and engineering processes while following rigorous development and security screening practices.

Lead architecture and roadmap for Azure PostgreSQL systems; design and review scalable, maintainable database engine features (query processing, storage, transaction logging, recovery, versioning, IO, scale-out). Influence coding standards and run code reviews, write proof-of-concept or production code, contribute to open-source PostgreSQL/Linux, and participate in rotational on-call operations.

Lead the technical roadmap and design for Marqeta's core issuing and processing platform. Drive high-impact initiatives to improve performance, reliability, scalability, and cost-efficiency. Write, review, and optimize code across the stack, partner with product, mentor technical leads, and evangelize best practices for resiliency, security, and multi-region systems.

The Principal Software Engineer at Snout will define architectural direction, build features across the stack, and enhance team effectiveness, ensuring quality and performance.

Lead backend and full-stack engineering strategy, design and deliver scalable, secure distributed systems and microservices for government customers. Drive architecture, data design, observability, CI/CD, cloud-native patterns, mentoring, and large modernization initiatives while collaborating with product and stakeholders.

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.

Define next-generation graphics and compute capabilities for Direct3D and HLSL. Collaborate with GPU vendors and industry groups, influence standards, design and ship new features, and analyze and optimize workloads across modern GPU architectures.

Lead technical strategy and hands-on development of HubSpot's build, test, and deploy platform. Design scalable CI/CD, test orchestration, and AI-powered QA agents, drive architectural decisions, remove pipeline bottlenecks, and deliver cross-team initiatives that increase deployment velocity and reliability for thousands of engineers.

Technical leader on the Elasticsearch Search team driving design and implementation of search and vector features, improving relevance, contributing to Lucene, mentoring engineers, triaging community issues, and writing idiomatic modern Java for a distributed, collaborative team.

Lead technical strategy and build scalable Salesforce and data integrations. Architect CRM-to-data-platform pipelines, enterprise data products, and AI-powered developer tools. Mentor engineers, define data quality and observability standards, and drive production troubleshooting and platform reliability across applications, integrations, and data services.

Lead technical vision and architecture for Gemini's customer-facing platform. Drive cross-org, long-horizon initiatives (onboarding, KYC, support), set standards and patterns, mentor engineering leaders, and advance AI-assisted/agentic development and automation to improve scale, reliability, and product UX while delivering complex programs from ambiguity to production.

Design and develop software to onboard hardware accelerators and optimize storage datapaths for Azure Storage. Drive design, debugging, performance tuning, operations, and cross-team collaboration across research, compute, and storage to improve throughput, scale, reliability, and observability.

Drive architecture, design, and implementation of large-scale software systems. Lead technical strategy, mentor engineers, collaborate cross-functionally, ensure code quality and operational reliability, and guide delivery of complex features and platform improvements.