Top Principal Software Engineer Jobs in San Francisco, CA

Lead the development of healthcare software, manage a team of engineers, and collaborate on architecture and product requirements while maintaining high standards of quality and security.

Lead a software engineering team to develop healthcare software, mentoring members, collaborating closely with product and design teams, and ensuring high-quality delivery.

The Principal Software Engineer will guide the architecture of large scale distributed systems, ensuring performance and reliability while collaborating on long-term infrastructure strategy.

As a Principal Software Engineer, design and implement core systems for a real-time marketing platform, focusing on distributed systems, big data infrastructure, and AI/ML applications. Collaborate with teams to deliver high-performance APIs and intelligent solutions.

As the Area Technical Lead, you will architect and improve the ML data strategy for autonomous driving, enhancing the data-driven self-improvement process for the Waymo Driver.

Seeking a Principal Software Engineer to build developer products for LLM applications, ensuring high-quality tools and APIs while leading engineering practices and collaborating across teams.

The role involves developing sensor-fusion models for autonomous driving, optimizing model deployment, and leading technical teams in machine learning engineering.

Lead design and scalability of Java-based backend services for a multi-tenant platform. Architect high-throughput, low-latency systems, integrate core data stores, modernize legacy Java components, improve observability and CI/CD, and mentor engineers while driving platform strategy and reliability.

Design and build AI-first data systems, focusing on architecture, developer experience, and cross-stack execution while mentoring engineers.

The Technical Director, MLE will lead AI projects, enforce MLOps practices, mentor teams, and architect scalable cloud solutions to enhance data integrations.

Lead the technical development of machine learning algorithms for the ML Planner, collaborating across teams to influence autonomous technology direction.

As a Principal Software Engineer, you'll lead a team on the development of cloud identity solutions, mentor engineers, and ensure high quality in software design and implementation.

Lead development of the Perc real-time JVM and toolchain (32/64-bit) on Linux for x86/ARM. Implement features and fixes, maintain tests and releases, support customers and presales, manage CI/build systems, and influence product roadmap and tooling.

The Principal Software Engineer, Payments, leads design and architecture of Turo's payment systems, mentors engineers, and collaborates with cross-functional teams to ensure operational excellence.

Lead architecture and development of scalable, secure, enterprise-grade systems. Drive technical strategy, mentor engineers, design microservices and REST APIs, implement CI/CD and TDD practices, collaborate cross-functionally, and champion emerging technologies to improve member-facing financial solutions.

Design and develop web applications, mentor teammates, shape architectural decisions, write clean code, conduct testing, and troubleshoot issues.

The Principal Software Engineer II will lead and contribute to Elasticsearch's Storage Engine team, focusing on efficient data querying, indexing, and developing Timeseries solutions. This role requires strong technical leadership, collaboration across teams, and expertise in Java and Elasticsearch.

Lead reliability, availability, and resiliency strategies for large-scale systems, drive operational excellence, and provide technical mentorship across engineering teams.

The Principal Software Engineer will lead the development of autonomous systems for satellites, overseeing architecture and capabilities while mentoring engineers. Responsibilities include guiding algorithms for satellite operations and ensuring software integration across mission elements.

Design, develop, and deploy secure, scalable software solutions; implement and automate CI/CD pipelines and testing; manage cloud infrastructure (AWS/Azure) and infrastructure automation; provide Tier III support, monitor performance and SLAs, and train teams on automation best practices.

The Principal Software Engineer II will build and maintain machine learning components in Elasticsearch, collaborating with teams, writing scalable code, and owning projects from design to implementation.

The Principal Software Engineer will design, develop, and implement complex solutions for the FedNow service, providing technical leadership and ensuring high-quality software across various technologies.

The Principal Software Engineer will lead technical initiatives, own systems and capabilities, drive architectural improvements, provide mentorship, and ensure quality across the engineering organization while delivering complex software solutions.

The Principal Software Engineer will lead technical development for Breeze Assistant, focusing on AI integration with HubSpot CRM and experimentation with LLM capabilities, ensuring system reliability and mentorship within the engineering team.

The Principal Software Engineer designs prototypes, implements solutions, analyzes technologies, and provides development support, playing a key role in improving customer experience for federal clients.