Top Principal Engineer Jobs in Seattle, WA

The Senior Principal Engineer will design and maintain cloud infrastructure, mentor teams, and drive technical innovations for SoFi's developer platform.

As Principal Engineer in Data Reliability at Xero, you'll enhance software delivery through technical leadership, support PostgreSQL migration, and innovate tooling and processes, focusing on engineering excellence and cross-functional collaboration.

The Senior Principal Engineer will provide architectural oversight and technical leadership, focusing on large-scale distributed systems and resource efficiency. Responsibilities include collaborating across teams and defining scalable architectural strategies.

As a Principal Engineer, you will lead the technical development of a GPU inference platform, optimizing for latency and performance, while mentoring engineers and collaborating with cross-functional teams.

The Principal Engineer will lead the technical strategy and architectural decisions for the Endpoint Protection Product, focusing on Windows. Responsibilities include mentoring, performance optimization, and collaboration across teams while staying updated on security trends.

As a Principal Engineer in Production Engineering, you will lead the roadmap, design complex distributed systems, and mentor engineers, driving reliability and performance for GitLab's scalable SaaS platform.

Lead the strategy and implementation of Observability solutions, ensuring alignment with business goals, and enhancing customer monitoring and reliability.

As a Principal Engineer, you'll lead and guide technical strategies for the Policy Management team, developing cloud-based systems and mentoring engineers while ensuring project delivery and system scalability.

The Technology Resilience Principal will lead resilience functions, driving strategies for technical resilience across systems, ensuring service reliability, and disaster recovery.

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

The Principal Machine Learning Engineer will drive the technical roadmap for personalized video recommendations, design and scale ML architectures, and collaborate on strategies enhancing content relevance.

Lead architectural decisions for Cloudflare's R2 object storage platform, designing reliable, high-throughput systems while collaborating with engineers and stakeholders to align goals.

The Principal Software Engineer will architect and implement fraud detection and AML solutions, develop risk models, and optimize decision engines using advanced technologies and data analytics.

The Principal Engineer on the PaaS team will architect large-scale systems, mentor engineers, and drive technical direction for cloud services.

The Principal Software Engineer will design and implement scalable backend services, lead technical initiatives, and ensure high availability across critical systems.

Lead initiatives for Consumer Ads, shape technical direction, collaborate across teams, and launch new ad capabilities while mentoring engineers.

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.

As a Principal Software Engineer, you will create and integrate complex systems for military applications, focusing on networking, autonomy, and reliability. Your role involves software delivery, issue resolution, and collaboration across teams to enhance mission outcomes.

As Principal Software Engineer at Gusto, you'll architect scalable payroll systems, lead cross-functional projects, mentor engineers, and drive product strategy.

Lead design and development of SDKs for behavioral data collection in advertising, collaborating across teams, ensuring compliance with regulations.

Lead the design, development, and testing of automotive infotainment applications while managing cross-functional teams, implementing Agile practices, and ensuring high-quality software delivery.

Lead the development of the Edge platform, collaborating across teams to define strategy, guide software solutions, and foster team development.

The Principal Software Engineer at Qualtrics will lead complex projects, drive technical vision, mentor engineers, and influence technology decisions across the organization, focusing on scalable systems and AI integration.

Lead the development of capacity management and load testing capabilities, collaborate with engineering teams, and advocate for innovative solutions.

Lead the development of Upstart's GenAI platform, driving technical direction, architecture, and adoption across engineering teams. Mentor senior engineers and represent the company as a thought leader in GenAI systems.