Top Principal Engineer Jobs in NYC, NY

Lead architecture and technical execution for Toast’s Payroll and Team Management products. Own authentication, authorization, and organizational hierarchy across a multi-tenant SaaS platform. Drive high-scale, full-stack initiatives, modern agentic development practices, integrations, technical strategy, quality standards, deployment practices, and cross-functional collaboration. Mentor engineers across teams and leverage AI tools and LLM integration to improve software development velocity and quality.

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.

Design, develop, and maintain a native IBM i connectivity agent for Redwood RunMyJobs. Responsibilities include job submission and monitoring, spool and queue handling, CL/RPG invocation, security integration, API connectivity, troubleshooting, performance and reliability improvements, architecture, code reviews, testing, documentation, and collaboration with product and engineering teams. The role also requires validating AI-assisted solutions against authoritative IBM i documentation.

Build and maintain a Java-based connectivity agent integrating Redwood RunMyJobs with IBM z/OS. Responsibilities include JES, TSO, SMF, USS, security, cryptography, custom protocols, C/JNI integration, concurrency, troubleshooting, performance, architecture, testing, documentation, and collaboration. The role requires deep mainframe systems expertise, strong Java and C skills, DevOps experience, and sound judgment when using AI-assisted engineering tools.

Designs, deploys, maintains, and secures cloud solutions across AWS, Azure, GCP, and OCI. Develops automation using Bash, PowerShell, and Python; monitors and tunes cloud platforms; maintains documentation and operating procedures; advises implementation teams; supports migrations and infrastructure buildouts; resolves escalations; and collaborates with internal and external stakeholders.

Architects, deploys, secures, and sustains enterprise multi-cloud platforms across Azure Government, AWS, and hybrid environments. Leads cloud engineering teams, manages infrastructure security and identity services, drives modernization and automation, engineers cloud networking, supports DevSecOps, optimizes costs, and oversees incident response and operational restoration. The role also maintains VDI, client applications, and Digital Engineering ecosystems while coordinating with security, compliance, and mission stakeholders.

Leads architecture and development of Azure Storage table, metadata, and indexing systems at massive cloud scale. Designs distributed-system primitives for partitioning, indexing, transactions, consistency, replication, caching, and high-performance data access. Drives architectural decisions, prototypes innovations through production, and improves performance, scalability, reliability, and cost efficiency. Requires deep expertise in distributed storage, databases, or large-scale systems.

Designs and leads large-scale software subsystems, architecture, coding standards, code reviews, debugging tools, performance optimization, refactoring, and QA automation. Guides business and technical solution definition, evaluates production readiness using objective metrics, and develops web content management, workflow automation, integrations, and database solutions. The role is telecommuting eligible throughout the United States.

Senior/Principal DevOps Engineers will deliver cloud and infrastructure projects for small, medium-sized, and enterprise clients. Responsibilities include DevOps project delivery, staff augmentation, fractional retainers, and solution consulting using AWS, GCP, Azure, infrastructure-as-code, Kubernetes, Helm, Docker, and scripting languages. Strong communication and project management skills are required. Roles are available full-time or part-time as 1099 contractor engagements for US-based workers.

Define architectural direction for Azure Specialized platform services and lead the design of highly available distributed cloud systems. Drive reliability, scalability, observability, security, diagnostics, and operational improvements across engineering organizations. Establish service health frameworks, SLOs, metrics, and governance for mission-critical services. Mentor engineers, influence technical strategy, resolve complex cross-system challenges, and advance AI-assisted troubleshooting and platform modernization.

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.

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.

Leads the architecture, integration, qualification, and production scaling of automation systems for precision electro-optical manufacturing. Responsibilities include machine vision, AI-based inspection, robotics, motion control, automated testing and packaging, root-cause analysis, equipment selection, documentation, capacity planning, and continuous improvement. The role serves as a senior technical authority, mentors automation engineers, leads design reviews, and collaborates with product, process, test, manufacturing, and external supplier teams.

Own the architecture, implementation, and operational excellence of major Azure Boost DPU software components. Develop low-level systems software spanning operating systems, virtualization, networking, storage, device management, and hardware interfaces. Lead complex cross-functional initiatives, optimize hyperscale performance and reliability, resolve system-level issues, establish engineering practices, influence platform architecture, and mentor engineers across Azure infrastructure teams.

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.

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.

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

Develops and maintains high-quality systems software and microservices for Azure Messaging services, including data storage and replication. Drives product and engineering-process innovation, applies AI to software development, ensures software quality and stability, and uses rigorous development practices including requirements, testing, and efficient coding techniques.

Lead the 0-to-1 architecture, development, testing, and launch of Riverside Insights’ Reach platform and next-generation CogAT assessment. Build and manage a 6–10 engineer team, make build-versus-buy decisions, oversee AWS infrastructure and regulated-data compliance, lead customer migration, and translate product roadmaps into technical execution. The role is hands-on, requiring active coding, full-stack fluency, AI-native development, cross-functional partnership, and senior leadership communication.

Define technical direction for hyperscale Azure Storage components; architect, develop, test, and support highly scalable, secure, compliant, and highly available cloud services. Lead multiple engineering projects, improve reliability, scalability, performance, consistency, and observability, and apply AIOps for incident detection, root-cause analysis, and operational excellence.

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 hands-on development for Microsoft's virtualization platform, focusing on hypervisor and VMM capabilities. Design, implement, and optimize systems software across Windows, Linux, macOS, Azure, and containers. Improve performance, security, reliability, testing, and operational readiness; diagnose low-level hardware/software issues; enable virtualization on new silicon; mentor engineers; and influence platform strategy across teams and hardware partners.

Designs, develops, configures, and supports Edifecs healthcare EDI solutions and transaction mappings. Works with 837, 834, 835, 820, and 270/271 transactions; troubleshoots transmissions, configures validations, and develops Groovy scripts. Leads Agile and DevOps efforts, mentors engineers, supports QA, and designs scalable AWS applications using containers, microservices, and CI/CD. Provides technical leadership, architecture guidance, performance tuning, and stakeholder consultation.

Owns database engineering patterns for federal programs, including schema standards, replication, query performance, backup and disaster recovery, security, zero-downtime migrations, and shared infrastructure. Supports production data planes, handles escalations, conducts recovery drills, and partners with platform and data engineering teams. The role also requires customer-facing communication about data residency, retention, encryption, and access within FedRAMP environments.

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