Top Principal Engineer Jobs in Seattle, WA

As a Principal Engineer at CoreWeave, you will design cluster orchestration systems, lead technical direction, ensure system reliability, and mentor engineers while focusing on large-scale GPU cluster performance for AI workloads.

The Principal Engineer will lead the Digital Identity group, architect solutions for complex problems, and ensure operational excellence by establishing processes and mentorship for the team.

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.

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

Lead design and future architecture of DigitalOcean data centers, owning MEP, cooling and power topologies (air to 800VDC liquid rack-scale), run PoCs, support site selection, mentor engineers, and translate AI/ML hardware roadmaps into scalable, deployable global standards.

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.

The Staff Engineer will lead the Benchmarking & Performance team, managing performance data across CoreWeave's global infrastructure, developing benchmarking strategies, optimizing MLPerf submissions, and collaborating with NVIDIA and the open-source community.

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 a team developing and integrating Windows DirectML drivers to enable ARM ML/NPU architecture on Windows-on-ARM systems. Design, implement, debug, test drivers across software models and FPGA platforms, manage deliverables, mentor engineers, and coordinate with ARM engineering teams to ensure quality and successful delivery.

Lead a team developing and enabling Windows-on-ARM drivers and API adjustments for ARM architecture. Design, implement, debug, test drivers across platforms (software models, FPGA), oversee deliverables quality, assign tasks, mentor engineers, and collaborate with ARM peer teams.

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.

Lead operational readiness reviews for large-scale data center projects, identify design/construction/commissioning gaps, drive corrective actions, validate turnover readiness, coordinate across design, construction, commissioning, and operations to ensure mission-critical infrastructure meets standards and is handed off reliably.

Design and build next-generation ads formats, backend infrastructure, and scalable distributed systems. Lead technical direction, collaborate across teams to define product requirements, experiment, analyze and optimize ad performance, and ensure availability, scalability, operational excellence, and cost management. Mentor engineers and apply AI tools and high-velocity workflows to deliver production-ready systems.

As a Principal Software Engineer, lead the architecture and implementation of scalable observability platforms while mentoring engineers and optimizing observability practices across teams.

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

Lead design, development, and delivery of avionics software for airborne traffic, collision avoidance and surveillance systems. Mentor engineers, define requirements, conduct code reviews, manage risks, and ensure projects meet schedule, scope, and budget.

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.

The Principal Engineer designs and implements game features, collaborates with teams, drives innovation, and provides technical leadership in game development.

Hands-on principal engineer driving physical implementation, timing closure, and physical verification for analog and mixed-signal IP. Owns Fusion Compiler APR flows, floorplanning, placement, routing, ECOs, timing debug, and signoff readiness while coordinating cross-functional teams and mentoring engineers.

As an AI Native Software Engineer, you'll build products using AI coding agents, translating customer needs into solutions, and ensuring quality delivery and documentation.

Lead the vision and strategy for Authentication at Databricks, focusing on security and user experience. Recruit and mentor engineering talent, communicate security innovations internally and externally.

As a Principal Engineer, you'll architect backend services for financial products, integrate with platforms, champion security, scale systems, and elevate engineering practices while mentoring others.

Lead systems engineering for avionics programs, owning requirements, integration, verification, and customer interactions. Mentor teams, manage risks, troubleshoot complex issues, and collaborate across software, hardware, and test disciplines to deliver airborne surveillance and navigation systems.