Role Summary
We’re seeking a Linux Platform Engineer to design customized, high-performance Linux distributions of our software. This role requires deep OS-level customization, lifecycle management, and performance/network tuning to deliver a tightly integrated, production-ready platform.
You’ll own the end-to-end process of OS-level customization, from kernel builds and footprint reduction to application integration and low-level performance tuning. This role requires someone who thrives at the intersection of operating systems, networking, and hardware — with the ability to shape a platform built for demanding AI and data workloads.
What You’ll Be Doing
- Build and maintain custom Linux distributions, with full kernel configuration and compilation.
- Remove unnecessary components to create minimal, production-grade OS images.
- Integrate proprietary applications into the OS lifecycle (e.g., direct boot into apps).
- Tune boot time, memory footprint, and CPU scheduling for low-latency performance.
- Optimize TCP, UDP, and RDMA stacks for high-throughput workloads.
- Work directly with PCIe/DMA hardware and integrate custom drivers.
- Implement reproducible builds and system hardening practices.
- Automate builds, deployments, and test pipelines with Yocto, Buildroot, Bash, and Python.
What We Need to See
- 7+ years of experience in Linux systems engineering, kernel-level work preferred.
- Proven track record in custom kernel compilation and OS builds.
- Strong knowledge of systemd, init, and application lifecycle control.
- Experience with system profiling tools (perf, ftrace, strace).
- Familiarity with PCIe, DMA, and driver development.
- Proficiency in Bash, Python, and Linux build systems.
Ways to Stand Out
- Experience with reproducible build pipelines and secure boot chains.
- Contributions to Yocto, Buildroot, or open-source kernel subsystems.
- Proven ability to shrink OS footprints for embedded or performance-critical use cases.
Why Join Us?
You’ll
📌 Linux Platform Engineer (Madrid)
🏢 FastS3
📍 Madrid