Linux Kernel Engineer

X4 Group Ltd
South Bank, Greater London
6 months ago
Applications closed

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Fully Remote | Linux Kernel Engineer | Open Source Silicon Enablement | Multi-Year Engagement | Work from anywhere in Europe 

Deep Kernel Engineering Meets Real Hardware — Help Bring Up a Next-Gen SoC

We’re hiring experienced Linux kernel and driver engineers to work on the open source enablement of a cutting-edge, multi-core custom processor being developed by a globally recognized semiconductor innovator. This is a rare opportunity to contribute to Linux kernel development at the architectural level, supporting a powerful heterogeneous SoC that includes application, real-time, and low-power compute domains, as well as custom accelerators and high-bandwidth peripherals.

You’ll be part of a long-term (2+ year) project, fully remote (EU-based), working with a technically elite team. This is not vendor patching — it’s open source-first engineering, with real opportunity to upstream drivers and kernel features, and work across mainline 6.x series kernels, including the latest kernel releases.

️ What You'll Work On:

Custom Linux kernel 6.x fork tailored for a novel multi-core SoC with mixed Cortex-A, Cortex-R, and Cortex-M cores
Driver development and subsystem integration for high-speed interfaces: PCIe, USB 3.x, MIPI, Ethernet, and CAN
Enabling custom hardware accelerators through Linux-compatible interfaces (e.g., DMA, interrupt routing, shared memory)
Upstreaming modules and contributing to Linux subsystems where appropriate (camera, networking, AI, embedded bus, etc.)
Backporting select kernel features and security patches to match silicon validation and release cycles
Close collaboration with board bring-up teams, silicon validation engineers, and firmware developers

✅ You Should Bring:

Strong experience with Linux kernel development (ideally 5.x or 6.x series)
Proven expertise in kernel subsystems: memory management, I/O, interrupt handling, and scheduling
Skilled in device driver development, especially for complex peripherals or custom IP
Familiar with upstream Linux workflows — patch review, submission, and kernel community etiquette
Experience with backporting techniques and tools (git, quilt, patch stack maintenance)
Confident using low-level Linux tools: perf, ftrace, kgdb, crash, dmesg, etc.
Fluent written and spoken English for technical collaboration
Bonus Points for:

Experience in semiconductor or board bring-up environments
Past mainline kernel contributions
Knowledge of Yocto, Buildroot, or similar embedded Linux toolchains
Familiarity with custom SoC designs, MMUs/IOMMUs, or hardware acceleration pipelines
Exposure to multi-core, heterogeneous compute architectures
Why This Role Stands Out:

Work on a next-generation processor architecture — multi-core, multi-domain, with custom accelerators and subsystems
Engage in real open source work — with upstream contribution and long-term maintainability in mind
Operate on the latest Linux kernel versions, shaping how new hardware interacts with the evolving kernel landscape
Real hardware bring-up — early silicon, validation boards, and production platforms
Join a long-term project with technical autonomy, deep engineering culture, and competitive compensation (well above €100k/year equivalent)
Fully remote within the EU with flexible working hours
If you’re a Linux kernel specialist who enjoys architecting drivers, working close to hardware, and contributing to the open source community — this is the kind of project engineers wait years for.

Apply now to help build the future of Linux on next-gen silicon

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