PCIe Device Driver Engineer (AI)

Location: Seoul HQ, Seoul, South Korea

Company

hirify.global's System SW department develops software for high-performance PCIe data paths and AI accelerator integrations.

What you will do

• Develop and maintain Linux PCIe device drivers and kernel modules.
• Optimize PCIe subsystem behavior, including DMA, IOMMU, interrupts, and BAR mapping.
• Build user-space libraries and APIs for high-performance data paths.
• Collaborate with hardware and firmware teams on end-to-end PCIe I/O pipelines.
• Design efficient memory management and zero-copy data transfer paths.

Requirements

• Strong understanding of Linux kernel internals and memory management, including DMA and IOMMU.
• Experience developing kernel modules in C.
• Knowledge of the PCIe protocol and PCIe subsystem architecture.
• Experience with kernel debugging tools such as gdb, ftrace, and perf.

Nice to have

• Experience developing device drivers for HPC systems, AI accelerators, or high-speed networking.
• Background in RDMA, DPDK, SPDK, or other high-performance I/O frameworks.
• Familiarity with NUMA, huge pages, and pinned memory.
• Upstream contributions or open-source maintainer experience.

Culture & Benefits

• Full-time position within the System SW department.
• Cross-functional collaboration with hardware and firmware teams.