Sr. Software Engineer, Linux Kernel

Responsibilities

• Build and maintain a high-reliability Linux-based operating system for the supercomputer network fabric.
• Write and optimize high-performance device drivers for network and compute hardware.
• Deploy, operate, debug, and improve the production platform, including root-causing anomalies and enhancing observability and configuration-management tools.
• Collaborate with hardware teams and external partners to design next-generation supercomputer hardware and bring up the operating system and software stack on it.

Requirements

• At least 5 years of hands-on systems programming experience in C or C++.
• Strong operating-systems fundamentals, including scheduling, memory management, and I/O.
• Understanding of host and device networking, including switches and routers.
• Deep knowledge of the Linux kernel and networking stack, or transferable experience with another production-grade kernel.
• Proficiency with kernel, network, and userspace debugging tools such as ftrace, perf, Wireshark, tcpdump, eBPF, and gdb.
• Experience bringing up new hardware, including flashing bare-metal software on a microcontroller with JTAG or bootstrapping a Linux kernel and rootfs.
• Experience developing and optimizing device or peripheral drivers, ideally for high-speed interfaces or systems involving DMA and cache coherency.
• Understanding of Ethernet, PCIe, I2C, SPI, and other peripheral hardware interface standards, including schematic review and interface debugging.
• Experience with product security, OS or system hardening, and secure boot schemes.
• Excellent written and verbal communication skills.

Benefits

• Base salary of $180,000-$330,000 USD, plus equity.
• Comprehensive medical, vision, and dental coverage.
• Access to a 401(k) retirement plan.
• Short- and long-term disability insurance, life insurance, discounts, and other perks.