Ubuntu Linux Kernel Test Engineer
Core
Designing and maintaining automated test infrastructure and test plans to ensure the quality, stability, performance, and security of Ubuntu Linux kernels across multiple versions and architectures.
Role type
Senior IC Linux Kernel Test Engineer
Builds
Automated test frameworks, CI/CD pipelines, and stress/fuzzing harnesses for Linux kernels
Domain
Operating Systems / Linux Kernel / Open Source
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
Python, Linux kernel internals, system-level testing, CI/CD systems, Linux systems administration, Git, automated test infrastructure design
Preferred skills
Kernel fuzzing tools (syzkaller, Trinity, AFL), code coverage instrumentation, kernel tracing/observability (ftrace, perf, eBPF), static analysis tools, fault injection frameworks, virtualization technologies (KVM, QEMU), cloud infrastructure
Technologies
Python, Jenkins, GitHub CI, syzkaller, Trinity, gcov, kcov, LLVM, ftrace, perf, bpftrace, sparse, smatch, Coccinelle, failslab, KVM, QEMU, AWS, GCP, Azure, OpenStack
Responsibilities
Design and maintain comprehensive test plans for functional correctness, stability, performance, and security; Build and improve automated test infrastructure for continuous kernel quality validation; Maintain long-lived test suites evolving alongside multiple supported kernel versions; Develop and maintain CI/CD pipelines for continuous kernel quality validation; Conduct performance benchmarking and regression detection across kernel releases; Measure and improve kernel code coverage, identifying gaps and creating tests; Execute and analyze stress tests covering CPU scheduling, memory management, I/O subsystems, networking, and filesystem workloads; Develop and maintain fuzzing harnesses to discover kernel vulnerabilities; Contribute to upstream test suites and testing frameworks; Document test methodologies, results, and coverage gaps
Seniority
Senior, hands-on IC
