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Ubuntu Linux Kernel Test Engineer at Canonical. Location Information: Asia, Oceania. New. Ubuntu Linux Kernel Test Engineer. Home Based - APAC; Office Based - Beijing, China; Office Based - Taipei, Taiwan. Submit application. Ubuntu is the most widely used Linux distribution in the world, delivering kernels across a vast matrix of versions, architectures, and configurations – with up to 15 years of security and maintenance commitments for Long Term Support (LTS) releases. Ensuring the quality and reliability of these kernels demands a dedicated, systematic approach to testing at scale.. The Canonical Kernel Team is looking for a Test Engineer to take ownership of our kernel testing strategy and infrastructure. You will design and maintain test plans covering functional correctness, stability, performance, and security. You will build and evolve automated test frameworks – including stress testing, fuzzing, code coverage analysis, and regression detection – that not only must remain effective across many concurrently supported kernel versions spanning years of maintenance, but must be able to scale with the high demand for Ubuntu kernels (currently more than 160 under active support).. The successful candidate will bring strong Python skills, familiarity with Linux kernel internals, and experience building test infrastructure that scales. You will work closely with kernel engineers to catch regressions early, validate fixes, and ensure every kernel we ship meets the highest standards of reliability.. Location:. This role will be based remotely in the APAC region, except for Taipei, Taiwan, and Beijing, China, which are office-based locations.. What your day will look like. Design, develop, and maintain comprehensive test plans covering functional correctness, stability, performance, and security for Ubuntu Linux kernels. Build and improve automated test infrastructure for continuous kernel quality validation across multiple kernel versions and architectures. Maintain long-lived test suites that evolve alongside Ubuntu’s many concurrently supported kernel versions spanning years of maintenance. 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 in test coverage and creating tests to address them. 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 and reliability issues using tools such as syzkaller, Trinity, or custom fuzzers. Collaborate regularly and proactively with a globally distributed team. Contribute to upstream test suites and testing frameworks. Document test methodologies, results, and coverage gaps. What we are looking for in you. Significant programming experience in Python. Experience with test frameworks such as LTP, kselftest, xfstests, stress-ng, fio, or similar. Experience designing and executing system-level tests: functional, stress, performance, or regression testing. Familiarity with CI/CD systems (Jenkins, GitHub CI, or similar). Experience maintaining test suites over long periods, adapting to evolving software across multiple supported versions. Familiarity with Linux (Ubuntu or Debian preferred but not required), Linux kernel internals and subsystems. Experience with Linux systems administration and automation. Solid background with git. Well-organized, self-starting and able to deliver to fixed schedules. Professional written and spoken English with excellent communication skills. Ability to travel twice a year, for company events up to two weeks each. Additional skills that you might also bring. Familiarity with kernel fuzzing tools and techniques (e.g. syzkaller, Trinity, AFL, or custom harnesses). Experience with code coverage instrumentation (e.g. gcov, kcov, LLVM source-based coverage). Knowledge of kernel tracing and observability tools (e.g. ftrace, perf, bpftrace, eBPF). Familiarity with static analysis tools (e.g. sparse, smatch, Coccinelle) as part of a testing workflow. Experience with fault injection frameworks (e.g. failslab, fail_make_request) for reliability testing. Prior experience with test infrastructure at scale (provisioning, orchestration, result aggregation). Experience with Ubuntu/Debian packaging or Snap. Knowledge of virtualization technologies (KVM, QEMU) and container runtimes. Cloud infrastructure experience (AWS, GCP, Azure, or OpenStack). Prior involvement with open source testing communities or projects. What we offer you. Your base pay will depend on various factors including your geographical location, level of experience, knowledge and skills. In addition to the benefits above, certain roles are also eligible for additional benefits and rewards including annual bonuses and sales incentives based on revenue or utilisation. Our compensation philosophy is to ensure equity right across our global workforce. . In addition to a competitive base pay, we provide all team members with additional benefits, which reflect our values and ideals. Please note that additional benefits may apply depending on the work location and, for more information on these, you can ask in the later stages of the recruitment process.. Fully remote working environment - we’ve been working remotely since 2004!. Personal learning and development budget of 2,000USD per annum. Annual compensation review. Recognition rewards. Annual holiday leave. Parental Leave. Employee Assistance Programme. Opportunity to travel to new locations to meet colleagues at ‘sprints’. Priority Pass for travel and travel upgrades for long haul company events. About Canonical. Canonical is a pioneering tech firm that is at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open source projects and the platform for AI, IoT and the cloud, we are changing the world on a daily basis. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence - in order to succeed, we need to be the best at what we do.. Canonical has been a remote-first company since its inception in 2004.​ Work at Canonical is a step into the future, and will challenge you to think differently, work smarter, learn new skills, and raise your game. Canonical provides a unique window into the world of 21st-century digital business.. Canonical is an equal opportunity employer. We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products.. Whatever your identity, we will give your application fair consideration.. #LI-remote. Apply for this job. *. indicates a required field. First Name. *. Last Name. *. Email. *. Phone. Country. Phone. Resume/CV. *. Attach. Attach. Dropbox. Google Drive. Enter manually. Enter manually. Accepted file types: pdf, doc, docx, txt, rtf. Cover Letter. Attach. Attach. Dropbox. Google Drive. Enter manually. Enter manually. Accepted file types: pdf, doc, docx, txt, rtf. Education. School. Select.... Degree. Select.... Discipline. Select.... Add another. During this application process I agree to use only my own words. I understand that plagiarism, the use of AI or other generated content will disqualify my application.. *. Select.... How did you perform in mathematics at high school?. *. Select.... 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Universities around the world score degrees in different ways. Please indicate your result, or expected result if you are close to graduation, along with information about the grading system.. Are you comfortable using your own computer running Ubuntu?. *. Select.... Please summarise any experience you have working in operating system kernels. Which kernel(s)? To what extent? . If you have made direct contributions to Linux kernel mainline or other open source projects, please provide links here.. We require all colleagues to meet in person 2-4 times a year, at internal company events lasting between 1-2 weeks. We try to pick new and interesting locations that will likely require international travel and entry requirement visas and vaccinations. Are you willing and able to commit to this?. *. Select.... 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If you worked for a company which was acquired or renamed, then please count that as one company not two. Don't count any university jobs or internships. If you have your own company or do private contracting work in addition to your employment, please count that as one company.. Which gender do you identify as?. *. Select.... This information is being requested to help us maintain equal opportunities, best practices and comply with legal requirements. The submission of this information is entirely voluntary. The information you provide will not be used in our decision making and will not subject you to any adverse treatment.. Please indicate your nationality:. *. Select.... This information is being requested to help us maintain equal opportunities, best practices and comply with legal requirements. The submission of this information is entirely voluntary. 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