Principle Software Engineer Systems Software Jobs in San Francisco, CA

You reason from first principles, see how parts interact within a larger system, and move comfortably between levels of abstraction.

What you bring Strong software engineering skills and experience building production systems.

You reason from first principles, build clear mental models, and think about products as systems rather than collections of screens.

…like this 7+ years building software

engineer to help us build the future of AI software development What will you do?

…like this 4+ years building software

We’re seeking a Full Stack Software Engineer who thrives on ownership and loves building robust, high-performance systems from first principles.

…be one of the first engineering hires, working directly with the founders—Full-stack IC work: We work in

We’re looking for a founding software engineer to own development across our stack, with a strong backend focus.

…all of the following areas: Software fundamentals: system design