Embedded Linux Developer - C/C++

Key Responsibilities :

Kernel Lifecycle & Maintenance :

- Upstream Alignment : Lead the strategy for upgrading enterprise kernels (e.g., migrating from LTS 5.15 to 6.6) while maintaining binary compatibility where required.

- Patch Porting : Expertly port functional and performance patches between disparate kernel versions, resolving complex code conflicts and API changes.

- CVE Mitigation : Monitor the Linux Kernel Mailing List (LKML) and security advisories to identify and backport CVE patches from upstream to production environments.

Deep-Dive Debugging & Stability :

- Panic Analysis : Act as the final escalation point for Kernel Panics and "Oops" messages. Utilize kdump, crash, and gdb to perform post-mortem analysis of vmcores.

- Boot-Time Resolution : Debug critical failures during the early boot process (UEFI handoff, initramfs, and early kernel init) where standard logging is unavailable.

- Performance Tuning : Use ebpf, ftrace, and perf to identify bottlenecks in memory management, scheduler latency, or I/O throughput.

Driver Development & Hardware Integration :

- Driver Ownership : Design, develop, or maintain at least one Open Source or Proprietary Device Driver (Network, Storage, GPU, or Character devices).

- Hardware Abstraction : Interface directly with hardware registers, managing DMA mappings, and optimizing interrupt handling (MSI-X, Threaded IRQs).

- Out-of-Tree Management : Maintain driver compatibility across kernel updates using DKMS or similar frameworks.

Infrastructure & Automation :

- Registry Management : Oversee the distribution of custom kernel builds and modules via GitLab Container/Package Registries.

- CI/CD for Kernel : Build automated testing pipelines (Hardware-in-the-loop) to validate kernel stability before enterprise-wide deployment.

Required Technical Skills :

- Languages : Mastery of C/C++ Programming (C is preferred)

- Kernel Internals : Deep understanding of VFS, Memory Management (MMU/Paging), Process Scheduling, and Networking Stacks.

- Debugging Tools : Expert-level use of kprobes, trace-cmd, valgrind, and hardware-level debuggers (JTAG/Serial Console).

- Build Systems : Proficiency with Kbuild, Makefiles, and building RPM/Debian packages for kernel distribution.

- Security : Hands-on experience with SELinux/AppArmor policy development and kernel hardening (FIPS, KSPP).