Software Engineer - Linux Kernel & Virtualization (Remote in EMEA)

MSc or BSc in Computer Science, Electrical/Computer Engineering, Electronics Engineering, or equivalent practical experience 8+ years of embedded Linux or systems-level development Significant hands-on experience in Linux kernel programming Demonstrated experience building or securing virtualization systems using KVM or similar hypervisors in production Strong understanding of device trees, platform initialization, power management frameworks, netfilter/virtio networking, and real-time patches (PREEMPT_RT) Experience tuning filesystems and storage for embedded environments (ext4, F2FS, etc.) Deep understanding of Linux kernel architecture, including VM management (CROSVM/QEMU), hypervisor extensions, trusted execution extensions (ARM TZ, Intel SGX/TDX), memory management, scheduling, and interrupt handling Advanced proficiency in C for kernel development Familiarity with Rust for safe systems code is a plus Experience with debugging and tracing tools (KGDB, ftrace, perf) Experience with build ecosystems (Nix, Yocto, or equivalent) Skilled in cross-compilation for AArch64 and x86_64 Experience with driver development/porting Experience with CROSVM or QEMU-based prototyping Experience with performance profiling Strong knowledge of ARM stage-1 and stage-2 translations, page table formats, and fault handling Equivalent expertise on x86 (EPT/NPT, shadow paging, INVPCID, TLB management) Ability to work with hierarchical page tables, superpages, dynamic stage-2 allocations, and hypervisor-guest mapping coherence Experience reducing translation overhead, mitigating TLB thrashing, and implementing efficient paging strategies in multi-VM setups Understanding of modern security features like encrypted memory (e.g., SEV-SNP), MTE, and attestation mechanisms tied to memory integrity

Design virtualization, partitioning, and isolation mechanisms Define robust security policies for inter-VM communication Implement kernel-level, KVM-level, and VMM-level components Develop security-centric features for low-latency performance Integrate virtualization features into build pipelines and bootloaders Implement secure VM bootstrapping and maintain alignment with kernel developments Harden kernel configurations and hypervisor boundaries Perform regression testing and vulnerability assessments Adapt virtualization stacks across ARM and x86_64 architectures Prototype new microvisor/KVM hybrids Evaluate alternative virtualization technologies Diagnose and debug core Linux subsystems Improve boot performance and reinforce real-time capabilities Optimize memory usage for embedded platforms Mentor junior engineers and collaborate with globally distributed teams