Top Principal Engineer Jobs in Seattle, WA

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 enterprise RPA architecture and platform modernization, design scalable API-first automation, define engineering standards and reusable frameworks, integrate AI-assisted engineering, mentor teams, and advise executives on automation strategy and governance to improve reliability and delivery.

The Principal DevOps Engineer will architect the global cloud infrastructure, manage delivery pipelines, automate processes, and ensure operational health of a scalable distributed system. Responsibilities include designing AWS architecture, modernizing CI/CD pipelines, and developing monitoring dashboards.

The Principal AI/ML Engineer will develop machine learning models for campaign optimization in AdTech, collaborating across engineering and product teams to enhance advertising capabilities.

As a Principal AI Engineer, you'll design production-grade systems integrating generative AI in mental healthcare, overseeing architecture and applied research.

The Principal Cloud Support Engineer at Wasabi leads technical support, mentors engineers, resolves complex issues, and advises enterprise clients, focusing on cloud storage solutions.

The Principal Electrical Systems Engineer will lead the development of prototypes, design reusable modules, and evaluate new technologies for future product platforms, collaborating across teams.

Lead and mentor an engineering team building GovIntel and GovChannel product capabilities. Own technical direction, design and deliver scalable SaaS features, APIs, integrations, and platform reliability. Partner with Product, QA, Cloud Ops, and stakeholders to prioritize work, drive CI/CD and observability practices, lead reviews and incident response, and apply AI-assisted tools to improve development speed and quality.

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.

As a Principal Engineer, you will set the engineering vision, lead technical direction, and drive strategy across enterprise platforms, focusing on developer experience and scalability. Responsibilities include designing solutions, collaborating across teams, establishing engineering standards, and mentoring other engineers, all while ensuring alignment with broader business goals.

The Senior Staff Software Engineer - Privacy will enhance security for customers, attracting top talent, and representing the discipline at various events while overseeing data security initiatives.

Lead the architectural development of AI agent frameworks for Windows, optimize performance on NVIDIA GPUs, and mentor engineers in deployment best practices.

The Principal DevOps Engineer will lead the design and operation of CI/CD pipelines, platform reliability, and compliance for software deployment, while influencing DevOps practices and simplifying operational management across teams.

The Principal Consulting Engineer ensures solutions meet customer needs, provides technical leadership, manages projects, and drives successful implementations while maintaining operational standards and contributing to best practices.

The Principal Consulting Engineer will implement and support IP-based call center solutions, guide project strategies, and provide technical leadership while collaborating with clients and stakeholders to achieve project goals.

Lead AI strategy and delivery: define technical direction, prototype and ship production AI features, build shared AI platform components (evaluation, retrieval, safety, observability), mentor senior engineers, and drive measurable business outcomes for early education customers.

The Principal Engineer for Autonomy leads technical direction in Perception, Prediction, and Planning within the autonomy organization, ensuring robust integration and execution on real vehicles.

Profile, benchmark, and optimize large-scale LLM training and inference across GPUs, CPUs, HCAs, and switches. Focus on collective communication and high-performance networking, build PyTorch trace-based profiling and replay tools, define performance test plans, and collaborate across hardware and software teams to identify bottlenecks and achieve performance targets.

As a Principal Software Engineer, you'll architect and code backend services and ML models, integrate them with Salesforce, and mentor junior engineers.

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.

As a Security Engineer, safeguard Runpod's GPU cloud platform, conduct security assessments, implement fixes, and foster a security-first culture with development teams.

Lead the machine learning strategy, design scalable ML systems, drive MLOps, mentor engineers, and comply with AI governance.

Senior sales engineer for Zscaler's Healthcare Zero Trust Branch. Deliver technical product presentations, gather customer requirements, lead product evaluations and custom configurations, and design evaluation test plans to drive successful cloud-native Zero Trust deployments.

Lead the design of Xsolla's identity platform, develop Golang microservices for user management, and implement security protocols for compliance.

The role involves designing and developing a distributed ML data platform for autonomous vehicles, collaborating with stakeholders, and mentoring engineers while ensuring operational excellence.