Senior Linux Kernel Developer - PCI & Drivers

About the Position

We are seeking a Senior Linux Kernel Developer specializing in PCI and drivers to enhance PCIe device functionality through advanced address translation services. This role is remote and offers full-time and part-time opportunities.

Responsibilities

• Design and develop custom Linux kernel PCIe drivers to support checking and enabling Address Translation Services (ATS) and Address Translation Cache (ATC) capabilities.
• Architect driver solutions that seamlessly integrate with the existing Linux kernel PCIe subsystem.
• Optimize driver performance for stability, speed, and resource efficiency.
• Debug complex kernel-level issues using advanced diagnostic tools and techniques.
• Implement and maintain proper error handling, logging, and recovery mechanisms.
• Collaborate with hardware engineers to ensure driver compatibility with various PCIe devices.
• Create comprehensive documentation for driver architecture, APIs, and usage patterns.
• Conduct thorough code reviews and participate in technical discussions with the engineering team.
• Stay current with Linux kernel development trends and contribute to open-source projects when appropriate.
• Mentor junior developers in advanced kernel programming concepts and best practices.

Requirements

• Minimum 7 years of professional C programming experience, with specific focus on Linux kernel development.
• Extensive expertise developing and maintaining Linux kernel modules for version 5.15 and above.
• Comprehensive understanding of PCIe driver architecture, including endpoint drivers, root complex drivers, and bus enumeration.
• Demonstrable experience implementing PCIe device drivers with advanced features like MSI/MSI-X interrupts, DMA operations, and memory-mapped I/O.
• Proficiency with Linux kernel debugging tools (kgdb, ftrace, perf, etc.).
• Strong knowledge of memory management within kernel space.
• Familiarity with the NVMe driver stack and its underlying principles.
• Experience with kernel-level performance optimization techniques.
• Excellent problem-solving skills and attention to detail.
• Proficient English communication skills (B1-B2 level).
• Self-motivated and capable of working effectively in a remote environment.

Nice to Have

• Experience with ATS/ATC implementation in PCIe drivers.
• Understanding of IOMMU architecture and virtualization technologies.
• Knowledge of SR-IOV and PCIe virtualization mechanisms.
• Contributions to the Linux kernel or other open-source projects.
• Familiarity with real-time operating system constraints.
• Experience with PCIe 5.0/6.0 specifications.
• Understanding of CXL (Compute Express Link) technology.
• Knowledge of hardware security modules and trusted execution environments.
• Experience with embedded Linux systems.

Technical Environment

You'll be working with cutting-edge technologies including:

• Linux Kernel (version 6.8+).
• PCIe 6.0 specification and hardware.
• Advanced C programming (C17/C18 standards).
• NVMe 2.0 specification and driver stack.
• Various debugging and profiling tools for kernel development.
• Git for version control and collaborative development.
• CI/CD pipelines for automated testing of kernel modules.