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Low-Level Software Engineer (OS-based), CPU Validation group

Job ID 2026-19584 Date posted Oct. 01, 2026 Location Cambridge, United Kingdom Category Software Engineering Apply

Job Overview:

Are you passionate about the interaction between software and hardware and interested in applying your knowledge in a world-beating commercial processor group? Then this role may be just what you are looking for!

Arm's OS verification team is responsible for ensuring that ARM CPUs can boot operating systems and will be able to run real software. This includes early software bring-up on ARM CPUs with the goals of validating the hardware and of finding and investigating hardware and software bugs, which we can then investigate and share with hardware engineers to ensure their resolution.

We collaborate across our distributed team, as well as with colleagues in related software, hardware and architecture groups, allowing us to share optimum tools and ways of working.

If you enjoy low-level software development and are fascinated by the internal functioning of CPUs and operating systems, we would like to hear from you. This is an excellent opportunity to improve your software skills, while deepening your understanding of the internals of modern CPUs in an accomplished and diverse team!

Job Responsibilities:

  • Develop comprehensive OS-based validation test scenarios aligned with the test plan, architecture specifications, and targeted feature coverage.
  • Bring up and configure OS environments and test payloads on target platforms, execute regression suites, and analyze test results to identify functional and stability issues.
  • Debug and root-cause validation failures, including software/OS issues and hardware-related failures, and triage issues across HW, firmware, and software boundaries.
  • Document defects with clear failure analysis, reproduction steps, logs, and supporting evidence, and collaborate with development teams through resolution.
  • Track validation status, identify coverage or quality gaps, and communicate results, risks, and key findings to stakeholders.

Education & Qualifications:

University degree or equivalent experience in Computer Science, Electronic Engineering.

Required Skills and Experience:

  • You have software development experience in ‘C’ and some knowledge of low level assembler programming languages
  • You understand CPU architecture and micro-architecture features (such as caches, MMU, SMP, coherency, CPU pipelines)
  • You have knowledge of operating system kernels and how they exploit the hardware.

“Nice To Have” Skills and Experience:

  • Understanding and use of the Arm instruction set architecture
  • Experience with scripting languages such as Python
  • Exposure to CPU verification or EDA tools

In Return:

You will join a hard-working group of engineers who are driven by technical excellence and the opportunity to continue to learn throughout their careers - but who are also very friendly and approachable. Your work will directly lead to real products in the mobile, HPC and IoT spaces, giving you a real sense of accomplishment as well as meaningful rewards.

Additional Information:

Please note that no relocation package is available for this role. If skilled worker sponsorship is required, Arm will meet costs associated with sponsorship for the employer only. All fees associated with the individual’s application e.g. visa application fee and Immigration Health Surcharge, will be the responsibility of the successful candidate.

Accommodations at Arm

At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email accommodations@arm.com. To note, by sending us the requested information, you consent to its use by Arm to arrange for appropriate accommodations. All accommodation or adjustment requests will be treated with confidentiality, and information concerning these requests will only be disclosed as necessary to provide the accommodation. Although this is not an exhaustive list, examples of support include breaks between interviews, having documents read aloud, or office accessibility. Please email us about anything we can do to accommodate you during the recruitment process.

Hybrid Working at Arm

Arm’s approach to hybrid working is designed to create a working environment that supports both high performance and personal wellbeing. We believe in bringing people together face to face to enable us to work at pace, whilst recognizing the value of flexibility. Within that framework, we empower groups/teams to determine their own hybrid working patterns, depending on the work and the team’s needs. Details of what this means for each role will be shared upon application. In some cases, the flexibility we can offer is limited by local legal, regulatory, tax, or other considerations, and where this is the case, we will collaborate with you to find the best solution. Please talk to us to find out more about what this could look like for you.

Equal Opportunities at Arm

Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don’t discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Salary Range:

£55,300 - £74,800 per year

Power the Future on Arm

Working in software engineering at Arm is about shaping a future of technology for which we don't yet have words. Our engineers lead innovation in physical IP, AI and machine learning, cloud architecture, automotive tech, and every aspect of computing that matters.

Spanning software's full spectrum, from compilers to AI-powered IoT and beyond, your code can enable virtually anything to be produced on silicon. Whether you're developing award-winning VR gaming or life-enhancing medical equipment, you can improve the lives of millions by being your brilliant self at Arm.

Drive change on Arm

At Arm, you'll influence 100% of the world's connected devices and all their applications. From healthcare and infrastructure to virtual reality, you'll affect nearly all industries worldwide, racing toward new milestones and achievements together.

Revolutionary Benefits

Health and Wellness

We create a safe space for you to nurture both your physical and mental wellbeing.

Work and Life Success

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Financial Rewards

We provide benefits beyond a competitive salary to reward our people for their dedication and contributions.

Development and Support

We foster professional and personal development, building a supportive community where everyone can thrive.

Life at Arm

Life in the office doesn’t get any better, especially when those offices are as sleek as ours and the people in them are innovative and supportive. Combine that with our focus on delivering as One Arm, and you’ll experience the kind of collaboration and togetherness that’s rare to find elsewhere. We share so much in common, not least a passion for progress, but we also celebrate each other's diversity.

Discover Life at Arm

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