Senior Software Engineer - LLVM/Compilers

Job Overview:

Are you interested in working on pioneering compiler technology as part of our team of dedicated engineers working with the wider LLVM community? We have an opening for an exciting and varied role in our LLVM team.

In this role, you will collaborate with the LLVM community, contributing to the open-source LLVM compiler and other LLVM projects, to make the best use of Arm architectural features such as SVE and SME. You will analyse and improve the performance of applications and benchmarks running on Arm hardware.

Responsibilities:

• Provide technical expertise and influence across LLVM compiler development for Arm and upstream, shaping optimisation strategies and guiding key technical decisions to maximise performance and long-term value.
• Mentor engineers, inside the LLVM team as well as in the community.
• Represent Arm in the LLVM ecosystem, leading upstream contributions, influencing community direction, and building alignment with partners.
• Partner across other internal Arm teams to define priorities, ensure technical alignment, and deliver integrated solutions that support Arm’s roadmap.
• Champion process and quality improvements in development workflows, profiling methodologies, and performance benchmarking.

Required Skills and Experience:

• Excellent programming skills in C/C++.
• LLVM open source community citizenship, including code commits and reviews.
• Hands-on experience in analysing performance bottlenecks.
• Experience in low-level software or hardware development that requires looking at computer architecture specifications, such as compilers, debuggers, models, etc.
• Proficiency in software development and methodologies (coding, testing, debugging, reviewing).
• Effective communication skills to influence internal or external partners.
• Collaboration across teams and sites.
• Proactive with strong problem-solving ability.

“Nice To Have” Skills and Experience:

• Experience with Profile Guided Optimization (PGO).
• Understanding of computer architecture.
• Familiar with Agile software development methodology such as Scrum or Kanban.
• Familiar with Linux performance analysis tools and system level performance tuning.
• Familiar with build systems and CI

In Return:

You will work directly with upstream communities, contributing to language implementations used by millions of developers worldwide. You will have the opportunity to learn about the latest Arm architecture features, working closely with highly skilled engineering teams on ground-breaking technology. You will be empowered to continually identify and roll out improvements to our ways of working.

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.