Software Engineer - Linux Kernel - Starlink

SpaceX 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 SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. 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. Our team’s software interfaces directly with the core hardware of the supercomputer and its network fabric. ## Responsibilities - Build and maintain the lean, high-reliability Linux-based operating system that underpins our supercomputer network fabric and Starlink laser mesh of satellites. - 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. - Develop and constantly improve tools for observability and configuration management. - Collaborate with hardware teams and external partners to design the next generation of supercomputer hardware and bring up the OS and software stack on it. ## Basic Qualifications - Bachelor’s degree in computer science, engineering, math, or science discipline; or 2+ years of professional experience in software development in lieu of a degree (internship experience is applicable). - Hands-on system programming experience in C or C++. ## Preferred Skills and Experience - Deep knowledge of the Linux kernel and its networking stack or experience with another production-grade kernel. - Proficiency with debugging tools spanning kernel, network, and userspace (e.g., ftrace, perf, Wireshark/tcpdump, eBPF, gdb, and more). - Experience bringing up new hardware from scratch, such as flashing bare-metal software on a microcontroller with JTAG or bootstrapping a Linux kernel and rootfs on new hardware. - Demonstrated track record of developing and optimizing device/peripheral drivers, ideally for high-speed interfaces or with advanced considerations like DMA and cache coherency. - Understanding of major peripheral hardware interface standards (Ethernet, PCIe, I2C, SPI, etc.), with the ability to critically review a schematic and debug these interfaces if needed. - Experience with product security, OS/system hardening, and secure boot schemes. ## Compensation and Benefits Pay range: Level 1: $125,000.00–$165,000.00; Level 2: $145,000.00–$200,000.00. Actual level and base salary will be determined on a case-by-case basis and may vary based on job-related knowledge and skills, education, and experience. Base salary is one part of the total rewards package. Employees may also be eligible for long-term incentives in the form of company stock or long-term cash awards, potential discretionary bonuses, and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan. Benefits include medical, vision, and dental coverage; a 401(k) retirement plan; short- and long-term disability insurance; life insurance; paid parental leave; and various discounts and perks. Employees may accrue 3 weeks of paid vacation and are eligible for 10 or more paid holidays per year. Employees in Washington State accrue paid sick time in compliance with state and federal law. Company shuttles are offered for roundtrip travel from select Seattle locations to the SpaceX Redmond office Monday to Friday. ## ITAR Requirements To conform to U.S. Government export regulations, applicants must be a U.S. citizen or national, a U.S. lawful permanent resident (green card holder), a refugee under 8 U.S.C. § 1157, an asylee under 8 U.S.C. § 1158, or eligible to obtain the required authorizations from the U.S. Department of State. ## Equal Employment Opportunity SpaceX is an Equal Opportunity Employer. Employment with SpaceX is governed on the basis of merit, competence, and qualifications and will not be influenced by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.