Senior Software Engineer Runtimes and Architecture

Senior Software Engineer Runtimes and Architecture Overview

This role sits within Arm’s software engineering organization and focuses on the intersection of processor architecture, language runtimes, and compiler technology. The team is looking for someone who is curious, adaptable, and eager to work on how modern languages can make the best use of Arm architecture features. The work involves studying existing, new, and proposed architectural extensions, then determining how they can be applied effectively across a range of runtime and compiler technologies. The position also involves close collaboration with Arm architects, runtime engineers, and open-source communities to help shape future capabilities and improve real-world language implementations.

What you will do

• Review current and proposed Arm architecture features and identify where they can deliver value in language runtimes and compilers.
• Work with architecture specialists to refine ideas and, where suitable, help improve proposals for future features.
• Take responsibility for specific technical investigations and drive them forward with appropriate support.
• Partner with colleagues across Arm to improve the architecture and make sure it is used effectively in practice.
• Contribute to open-source projects and engage with the communities around them.
• Produce written material such as internal documentation and public-facing blog posts to explain findings and share technical insight.
• Develop tools and automation that make the analysis and investigation work more efficient.

What the team works on

You would be joining the wider CE-SW Runtimes group, whose mission is to strengthen support for modern programming languages on Arm architecture. The team’s scope includes technologies such as Java, JavaScript, Python, Rust, WebAssembly, and related ecosystems. The role is highly collaborative and involves working not only with the immediate team, but also with other parts of Arm and with external open-source contributors.

Skills and experience needed

• A flexible, analytical mindset with a strong inclination toward problem solving and learning.
• Hands-on experience with language runtimes, compilers, or similar systems software.
• Strong coding ability in at least one of C, C++, or Rust.
• Understanding of computer architecture and microarchitecture concepts such as cache behavior and CPU pipelines, ideally with exposure to AArch64.

Helpful additional experience

• Practical knowledge of one or more of Java, JavaScript, Python, Rust, or WebAssembly.
• Experience writing assembly or doing low-level AArch64 development.
• Experience using Linux performance analysis tools and tuning system-level performance.
• Familiarity with build systems and continuous integration workflows.
• Previous contributions to open-source software.

What Arm offers

Arm says this position gives you the chance to learn about and influence the latest architecture features while working with experienced engineering teams on advanced technology. You will collaborate with compiler and runtime specialists as well as open-source communities, helping shape language implementations that are used by millions of developers. The company also emphasizes the opportunity to improve internal ways of working and to help drive ongoing engineering improvements.

Arm’s broader rewards package includes support for health and wellbeing, work-life balance, financial recognition, and professional growth. The company also highlights a supportive environment for development and a culture that encourages people to thrive.

Working arrangement

Arm describes this role as part of its hybrid working approach. The company says it aims to balance high performance with personal wellbeing by bringing people together in person while still allowing flexibility. Hybrid patterns are set by teams based on the needs of the work, and the exact arrangement for this role will be shared during the application process. Arm also notes that local legal, regulatory, tax, or other considerations may affect the flexibility available, and it will work with candidates to find the best possible solution where needed.

Visa sponsorship

Arm states that if skilled worker sponsorship is required, it will pay the employer-side sponsorship costs. The person hired would be responsible for all personal immigration expenses, including the visa application fee and the Immigration Health Surcharge.

Additional information

The role is based in Cambridge or Manchester in the United Kingdom. Arm lists a salary range of £73,500 to £99,500 per year. The company also says it is an equal opportunity employer and does not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.

Arm provides recruitment accommodations for candidates who need them. Examples mentioned include breaks between interviews, having documents read aloud, and support for office accessibility. Candidates can contact the accommodations team by email to request adjustments during the hiring process.

Degree Requirement: Not Specified

Visa Sponsorship Promising