Linux Kernel & Device Driver

Key Responsibilities:

• Memory Management R&D: Architect and optimize Linux kernel memory management for heterogeneous systems, including UVM (Unified Virtual Memory), memory tiering, and CXL-based memory expansion.
• Kernel & Driver Design: Lead the design of Linux device drivers for high-performance interfaces such as PCIe Gen5/6, NVMe, and proprietary AI accelerators.
• Virtualization & Hypervisors: Develop and tune KVM and QEMU support for IOMMU, interrupt virtualization, and hardware-assisted memory management.
• SoC Bring-up & Architecture: Partner with hardware architects to define registers and memory maps for upcoming ARMv9 and RISC-V silicon.
• System-Level Debugging: Resolve critical system bottlenecks and memory corruption issues using advanced tools like Lauterbach TRACE32, hardware emulators (Palladium/Zebu), and kernel profilers.

• Education: MS in Computer Science, Computer Engineering, or a related field.
• Kernel Deep-Dive: Expert knowledge of the Linux MM subsystem (paging, swapping, HugePages, page cache, and LRU eviction policies).
• Hardware Interface Mastery: Deep understanding of PCIe/CXL protocol stacks, cache coherency (AMBA CHI/ACE), and DMA engines.
• Low-Level Programming: Expert proficiency in C and Assembly (ARM/x86); experience with Python for automation and performance modeling.
• Security & Reliability: Familiarity with hardware security features like TrustZone, ARM CCA, and memory protection units.

Preferred Experience

• Significant contributions to the mainline Linux Kernel (specifically in the mm/ or drivers/pci/ directories).
• Experience with Cloud and Data Center workloads and understanding their impact on kernel scheduling and memory latency.
• Knowledge of Machine Learning frameworks and how they interact with kernel-level memory allocators.