Sr. Software Engineer, Linux Kernel

SpaceXSI was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceXSI is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars.

At SpaceXSI, we design, build, and operate the largest AI supercomputers in the world, from the ground up. As a member of the Platform Core team, you will be responsible for the lowest layers of the software stack on the devices setting the pace for how fast we can push the frontier of AI.

Responsibilities:

• Build and maintain the lean, high-reliability Linux-based operating system that underpins our supercomputer network fabric
• Write (or rewrite) high-performance device drivers to extract the maximum physical capability from our network and compute hardware
• Manage deployment, operation, and debugging of our platform in production, including: rigorous resolution and root-causing of anomalies to ensure the system is constantly improving in reliability and developing and constantly improving our tools for observability and configuration management
• Collaborate with our hardware teams and external partners to design the next generation of supercomputer hardware – and then bring up our OS and software stack on it

Basic Qualifications:

• 5+ years of hands-on systems programming experience in C or C++

Preferred Skills and Experience:

• Strong operating systems fundamentals (scheduling, memory management, I/O)
• Understanding of computer networking, both in the host (OS stack) as well as common network devices like switches and routers
• Excellent written and verbal communication skills
• Deep knowledge of the Linux kernel and its networking stack
• Proficiency with debugging tools spanning kernel, network, and userspace
• Experience bringing up new hardware from scratch
• Demonstrated track record of developing and optimizing device/peripheral drivers
• Understanding of major peripheral hardware interface standards
• Experience with product security, OS/system hardening, and secure boot schemes

Compensation and Benefits: $180,000 - $330,000 USD Base salary is just one part of our total rewards package at SpaceXSI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.