{"id":2122058,"url":"https://alion.io/job/arm-holdings-low-level-software-engineer-os-based-cpu-validation-group","title":"Low-Level Software Engineer (OS-based), CPU Validation group","company":{"id":268,"name":"Arm Holdings","domain":"arm.com","url":"https://alion.io/company/arm","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Radancy","truth_index":{"grade":"B","score":75,"open_postings":60,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-10T05:45:15Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Cambridge, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":65000,"max_usd":164000,"period":"year","method":"role_country_seniority_unknown","sample_n":363},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"HPC","optional":true},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-10-01T00:00:00Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-12T00:28:58Z","board_verified":true,"closed_at":null,"days_open":11,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":11},"description":"Job Overview:\nAre 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!\nArm'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.\nWe 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.\nIf 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!\nJob Responsibilities:\nDevelop comprehensive OS-based validation test scenarios aligned with the test plan, architecture specifications, and targeted feature coverage.\nBring up and configure OS environments and test payloads on target platforms, execute regression suites, and analyze test results to identify functional and stability issues.\nDebug and root-cause validation failures, including software/OS issues and hardware-related failures, and triage issues across HW, firmware, and software boundaries.\nDocument defects with clear failure analysis, reproduction steps, logs, and supporting evidence, and collaborate with development teams through resolution.\nTrack validation status, identify coverage or quality gaps, and communicate results, risks, and key findings to stakeholders.\nEducation & Qualifications:\nUniversity degree or equivalent experience in Computer Science, Electronic Engineering.\nRequired Skills and Experience:\nYou have software development experience in ‘C’ and some knowledge of low level assembler programming languages\nYou understand CPU architecture and micro-architecture features (such as caches, MMU, SMP, coherency, CPU pipelines)\nYou have knowledge of operating system kernels and how they exploit the hardware.\n“Nice To Have” Skills and Experience:\nUnderstanding and use of the Arm instruction set architecture\nExperience with scripting languages such as Python\nExposure to CPU verification or EDA tools\nIn Return:\nYou 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.\nAdditional Information:\nPlease 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.\nOur 10x Mindset\nAt Arm, we believe progress happens when people are empowered to think bigger and push beyond what seems possible. Our 10x mindset is about curiosity, ambition and creating impact that will be used by millions. We learn fast, prioritise collaboration and turn bold ideas into real technology. We look for people who are inspired by this way of working and want to grow in an environment where bold ideas are welcomed. Discover how the 10x mindset shapes life at Arm: https://careers.arm.com/10x-mindset\nUse of AI in Your Application\nAt Arm, we embrace the benefits AI can bring, including in recruitment. You may use AI to support your preparation, such as improving the clarity of written responses, practicing interview questions, or learning more about our industry. However, your application and interview responses must reflect your own thinking, experience, and abilities. We want to understand your authentic perspective, creativity, and approach to problem solving. As such, you may not use AI to complete assigned tasks as part of any assessments. If you plan to use AI-supported or assistive technologies as part of a reasonable adjustment, please contact  so we can support you.\nRecruitment Adjustments and Accommodations\nAt Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email . 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.\nHybrid Working\nArm’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.\nEqual Opportunities\nArm 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.","description_format":"text","description_chars":6473,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":true,"industries":["Processors, MCUs & AI Chips","Semiconductor IP & Chip Design Services"],"lifecycle":[{"event":"open","at":"2026-10-09T00:00:42Z"}],"visa":[],"liveness":{"score":49,"band":"ok","label":"Likely open","p_open":1,"p_active":0.549,"p_room":0.9,"age_days":9,"expected_fill_days":20,"reasons":["conf:0","stale_co","velocity","win:mid","comp:brand"],"computed_at":"2026-10-10T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/arm-holdings-low-level-software-engineer-os-based-cpu-validation-group","json_url":"https://alion.io/job/arm-holdings-low-level-software-engineer-os-based-cpu-validation-group.json","meta":{"generated_at":"2026-10-12T00:43:20Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":315,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":268},"rest":"https://alion.io/mcp/rest/get_company?id=268"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Farm-holdings-low-level-software-engineer-os-based-cpu-validation-group"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Farm-holdings-low-level-software-engineer-os-based-cpu-validation-group"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Farm-holdings-low-level-software-engineer-os-based-cpu-validation-group"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/arm-holdings-low-level-software-engineer-os-based-cpu-validation-group\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Farm-holdings-low-level-software-engineer-os-based-cpu-validation-group"}]}