Staff Software Engineer - Compilers (LLVM)

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 Cambridge or Manchester, UK.

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 leadership on LLVM compiler development for Arm, owning key areas of performance optimisation and steering work from design through delivery.
• Shape direction for compiler optimisations targeting Arm architectures by driving sound technical decisions that 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.
• Solid understanding of computer architecture, Aarch64 is preferred.
• 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).
• 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.

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 [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 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.