Senior Software Engineer - Agentic AI Compute
Confirmed on the employer's own hiring board on Oct 31, 2026. First seen by Alion on Oct 27, 2026. Arm Holdings scores A on the Alion truth index.
We are looking for enthusiasticand motivatedengineers who want to bepartofa team buildingthe compute platform for AIatscale!
Job Description
Agentic AIis changing what CPU performance means in the cloud. As AIsystems evolve from individual model calls towards complex,distributed workflows, performance increasingly depends on efficientlyorchestrating models, data, tools and services across the whole system.
You will join a diverse, dedicatedand inclusivegroup based in Arm's vibrantoffice at the heart of Manchester. Your work will help ensure the latest developments in AItake full advantage of Arm Neoverse platforms and pioneering cloud-server technologies like AGI-CPU, our CPU for next-generation AIdata centers. Together with teams from across Arm, the opensourcecommunity, and our partners, you will be accelerating AIand helping buildthe future of computing on Arm.
We work on the full stack, from applications and frameworks, to compilers, libraries, and assembly; we encourageeveryone in the team to get involved in all parts. The team has a wide remit, but we are all aligned on a common goal. We trust and empowerengineers with the autonomy to identify and solveproblems without silos and with the support of their team mates.
Key skills
We're looking for people who are motivatedto learn,we will support your growth. You don't need all of these to be successful!
Strong software engineering and programming skills, preferably C++ and Python
Eager to dive into unfamiliar software stacks and codebases, debug complexissues, and identify performance opportunities
Familiarity with Linux development environments, profiling, debugging and performance analysis
An interest in understanding end-to-end application and system performance, from higher-level applications through runtimes and libraries to the underlying hardware
A degree in acomputational or numerate subject, orequivalentexperience
Nice-to-have skills and experience
We’d also be interested to hear about any experience you have in the following areas:
Experience with ML frameworks and LLM inference, such as PyTorch, vLLM, SGLang, llama.cppor similar
Experience analysing and optimizing CPU performance inheterogeneous CPU + accelerator systems
Familiarity with agentic AIframeworks and protocols
Understanding ofCPU bottlenecksin agentic workloads
Understanding of databases, vector search and retrieval systems
Familiarity with containers and cloud/server infrastructure
Familiarity with batching, scheduling, KV-cachemanagement, collective communications and distributed AIworkloads
Understanding of parallel programming
Comfortable working across abstractionsin the stack, from low-level optimisation to high level operators
Experience engaging with the open-sourcecommunityand contributingto large open-sourcesoftware projects
Experience optimizing software for AArch64/Arm servers, including SIMD technologies such as Neon™, SVE and SME
Interpersonalstrengths
Strong and clear communicationskills
Able to work independently, make pragmatic decisions and navigate ambiguity and change
Experience delivering technical work involving multiple contributors
In Return
You will receive an attractive reward package with generousstockawards.We also know that people do their best work when they feel rested and psychologically safe, so we have aprogressiveleavepolicyincludinggenerousparentalleave,daysofcareand 4weeksof sabbaticalevery 4 years. We are flexible on working hours, and allow hybrid working. We strivetoprovide an open and accepting environment where you are encouraged to share your ideas and opinions; which enables collective innovation and creativity,and supports your professional and personalgrowth.
Please note this role does not meet the eligibility requirements for sponsorship, and therefore the successful candidate must have the right to work in the UK without relying on sponsorship by Arm.
Our 10x Mindset
At 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
Use of AI in Your Application
At 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 [email protected] so we can support you.
Recruitment Adjustments and Accommodations
At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email [email protected]. 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
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
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.