We are looking for someone who is hands-on, takes initiative, and thrives in solving complex technical challenges involving embedded systems, OS-level programming, and secure platforms.
This is a hybrid role based in Cardiff, UK. Our current hybrid working model allows 2 remote days per week.
Responsibilities
* Designing and maintaining a custom Linux distribution tailored to embedded use cases.
* Contributing to and modifying the Linux kernel (mainline or forks).
* Writing and debugging device drivers for bespoke hardware.
* Creating and maintaining device tree source.
* Implementing robust bootloaders, kernel modules, and init systems.
* Managing distro build systems using tools like Yocto and Buildroot.
* Enforcing security e.g. secure boot, trusted execution environments and read-only rootfs.
* Debugging kernel panics.
* Reviewing kernel configurations with an eye to security (e.g. KASLR).
* Creating and managing SELinux/AppArmour profiles.
* Leading the design of scalable system update mechanisms and diagnostics tools.
* Performing code reviews and mentoring junior engineers.
* Interfacing with hardware, product, and application teams to ensure holistic system behaviour.
* Staying current with upstream changes, patches, and security advisories.
Qualifications
* 5+ years of Linux kernel development experience.
* Proven track record working on kernel-space and user-space integration.
* Deep experience with kernel debugging tools (ftrace, kprobes, perf, etc.).
* Expertise in C and shell scripting; familiarity with Python and Rust is a plus.
* Familiar with secure boot processes (e.g., U-Boot, GRUB with TPM, dm-verity).
* Familiarity with file system overlays, systemd and initramfs.
* Experience with deploying Linux on Arm.
* Knowledge of filesystems, memory management, and I/O subsystems.
* Exposure to real-time Linux (PREEMPT_RT or similar) is a strong advantage.
* Experience managing custom Linux distro lifecycle (build, release, patching).
* Comfortable working with Git version control, CI/CD systems, and collaborative tools.
* Bachelor's or Master's degree in Computer Science, Electronics Engineering, or related field.
* Legally eligible to work in the UK or designated location.
* Experience working in cross-functional, geographically distributed teams.
* Strong written and verbal communication skills.
Benefits
* Competitive salary and rewards package.
* Competitive benefits and annual leave offering, allowing for work-life balance.
* A vibrant, welcoming & inclusive culture.
* Extensive career development opportunities and resources to maximize your potential.
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