Top Principal Software Engineer Jobs in San Francisco, CA

The Senior Principal Software Engineer will tackle complex problems, lead a large team, partner across departments, and apply architectural standards for scalable solutions.

The Senior Principal Software Engineer will drive technical strategy, mentor teams, and tackle complex engineering challenges in an AI products context.

The Principal Software Engineer will lead initiatives driving revenue growth, oversee engineering solutions and teams, mentor engineers, and participate in code reviews.

As a Principal Software Engineer, you will lead cloud platform development, optimize performance, and collaborate on AI/ML solutions while ensuring security and scalability.

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

Join Freed as a Principal Software Engineer, leading full stack development and AI integration to improve healthcare solutions for clinicians.

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.

Lead the technical strategy for developer tools in a financial services company, focusing on AI-enabled development practices. Responsibilities include architectural design, mentorship, and driving innovation in software development.

The Principal Software Engineer will lead teams to enhance Gusto’s Payroll and Tax systems through design, implementation, and mentorship, ensuring quality and compliance across complex software solutions.

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

Lead the development of an AI framework for endpoint security, collaborate with teams, optimize solutions, and ensure model efficiency across various platforms.

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.

Looking for a Principal Software Engineer to lead AI-first products, evolve engineering practices, and mentor developers with a focus on Elixir and Python.

The Principal Software Engineer, Core Pricing will lead technical excellence, drive system design for loan pricing, and guide collaboration with ML scientists to optimize financial models.

The Principal Software Engineer will lead the vision and execution for Developer Productivity, enhancing workflows and integrating AI tools to streamline software delivery across Dropbox's multi-product stack.

The Principal Software Engineer will lead technical initiatives, define architecture, prototype ideas, and foster an innovative engineering culture, working cross-functionally to turn visions into execution.

As a Principal Software Engineer, you will lead the development and architecture of Upstart's Core GenAI Platform, ensuring technical excellence and cross-team collaboration while mentoring junior engineers and influencing business strategy.

As a Staff/Principal Software Engineer, you will design and operate CI infrastructure, enhance developer experience, build scalable systems, and lead projects for CI services and artifact management.

As a Principal Software Engineer - Storage at Wasabi, you'll design and improve storage software, addressing high reliability, security, and scalability in cloud storage services.

As a Principal Software Engineer, you'll design scalable cloud storage architectures, optimize performance, and collaborate with teams to enhance storage solutions for AI workloads.

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.

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.

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.

Lead the optimization of software delivery for 15,000 engineers. Develop tools, ensure best practices in SDLC, and drive engineering excellence.

As a Principal Frontend Software Engineer, you will develop enterprise-grade applications, mentor junior engineers, and improve feature quality and operational performance.