Top Principal Engineer Jobs in Seattle, WA

The Principal Software Engineer leads software development projects, designs software systems, evaluates technology options, mentors engineers, and creates documentation for software solutions.

The Principal Software Engineer will lead cross-team initiatives, define system architecture, mentor engineers, and engage in critical implementations to enhance reliability and team effectiveness.

The Principal Machine Learning Engineer will lead the Content Relevance team in optimizing personalized video recommendation systems, advancing core ML capabilities, and collaborating on tech strategies. This role also involves mentoring, technical direction, and applying best practices for system performance.

As a Principal Backend Software Engineer, you'll design and develop core modules for the elluminate platform, engage in all software development lifecycle phases, and provide technical guidance and support to the Engineering team.

As a Principal Full Stack Software Engineer, you will design and develop core modules for an analytics cloud platform, ensuring quality and efficiency throughout the lifecycle.

As a Principal DevOps Engineer, you'll manage AWS cloud environments, drive automation and CI/CD practices, and mentor junior team members to enhance operational efficiency and security.

Develop and productionize a next-gen Dispatch System, build ML models, automate processes, and collaborate with various teams while mentoring other engineers.

As a Principal Security Engineer, you will lead high-impact security initiatives, develop security patterns, and mentor engineers to enhance Upstart's security strategy.

Design, build, deploy and maintain scalable systems. Lead projects, optimize performance, communicate technical direction, and enhance engineering productivity using AI tools.

Design and develop front-end modules for a clinical data platform, ensuring usability and performance, while collaborating with multiple teams.

As Principal Product Manager, you'll drive the evolution of PagerDuty's developer platform, focusing on API integration and developer experience, while collaborating closely with engineering and AI teams.

Looking for a Principal Software Engineer - Tech Lead to enhance web applications and tech stack, focusing on full stack SaaS solutions and fostering technical excellence in an Agile environment.

As a Principal Security Engineer, you will lead security initiatives, design secure systems, automate processes, and mentor teams, ensuring safe technology usage.

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 oversee large engineering efforts, mentor other engineers, and influence product architecture strategies in the fintech sector.

As a Principal Engineer, you will lead the Infrastructure Security Team to create and implement multi-year security strategies, architect security frameworks, and mentor engineers, ensuring security standards across cloud infrastructure.

You will lead and mentor engineers while driving the development of solutions for autonomous vehicles using Machine Learning and software engineering principles.

The Principal Engineer acts as a Technical Lead Manager for motion planning in autonomous vehicles, directing a development team and collaborating across disciplines to enhance safety, performance, and innovation.

The Principal Engineer - Data Science leads engineering processes, provides technical consultation, and supports project management while mentoring engineers and driving technical innovations.

As a Senior+ Engineer, you will lead the design and architecture of impactful open-source projects while mentoring teams, coding, and engaging with the community.

Oversee a team to develop impactful healthcare technology using React and Ruby on Rails, setting software architecture and best practices.

The Vice President – Senior Principal Engineer will drive technology innovation, architecture, and mentoring across teams in building next-generation software solutions.

As a Principal Database Engineer, you will architect scalable PostgreSQL solutions, ensuring data reliability, performance, and collaborating with teams to build a robust data platform for GitLab's growth.

Lead the development of AI safety strategies for autonomous vehicles while ensuring compliance with industry standards, focusing on ML model validation and deployment in driving systems.

The Principal Engineer will architect and build scalable payments applications, mentor engineers, and collaborate on technology solutions while ensuring code quality and best practices.