Senior Software Engineer CXI Drivers & Kernel Networking
We are focused on delivering innovative solutions that accelerate our customers digital transformation, enabling them to tackle their complex, and data-intensive workloads. Combining deep expertise and the development of the world s most cutting-edge, high-performance supercomputers, is defining the next era of computing delivering valuable insight & innovation. Join us and redefine what s next for you.
What youll do:
- Develop, and maintain Linux kernel drivers for the CXI interconnect, including:
- CXI Core Driver (shared hardware abstraction and resource management)
- CXI User Driver (user-space access, queue management, protection domains)
- CXI Ethernet Driver (IP, RXE, sockets integration)
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- Lead 800G CXI driver development :
- resource partitioning
- Interaction with IOMMU, PCIe, and virtualization stacks
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- Own kernel interfaces used by:
- Lustre/LNet (kCXI, kfabric provider)
- Verbs / RXE paths
- User-space libraries (libcxi, libfabric providers)
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- Drive performance, scalability, and reliability improvements:
- Low-latency paths, queueing models, retry/timeout handling
- Error reporting, recovery, and fault isolation
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What you need to bring:
- 10+ years of systems software experience with deep expertise in Linux kernel development
- Strong experience with:
- PCIe, DMA, interrupts, memory management
- Linux networking stack (netdev, IP, sockets, RDMA/RXE)
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- Hands-on experience with Switch or NIC Software Stacks, especially in the low-level kernel and user space
- Proven ability to debug complex kernel + hardware interactions
- Excellent C programming and kernel debugging skills
Preferred Qualifications
- Experience with HPC or AI networking (RDMA, libfabric, MPI, storage fabrics)
- Familiarity with Lustre/LNet or high-performance storage stacks
- Experience working with custom NICs or ASIC-based interconnects
Additional Skills:
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