Senior Performance Tools Engineer

Senior Performance Tools Engineer Overview

This role sits within Arm’s software engineering organization and focuses on building and improving Telemetry, Arm’s open-source reference tooling for performance analysis. The work is centered on helping engineers apply Arm’s performance methodologies across compute subsystems such as CPUs, interconnects, memory systems, and related components. The team works closely with architects across Arm IP groups to convert performance methods into practical tools, and the output supports Arm’s internal performance specialists, external partners, and the wider open-source ecosystem.

What you will do

• Develop and extend the Telemetry toolset so that developers can apply performance methodologies on Arm platforms and act on the signals those tools surface.
• Partner with architects and analysis teams to turn findings and technical needs into new features, test cases, example material, and documentation.
• Use synthetic workloads and targeted microbenchmarks to validate performance methodologies, including occasional use of Arm assembly when that is the best way to exercise a scenario.
• Work alongside kernel and firmware engineers to ensure the required performance-measurement building blocks are available and usable, including PMUs and perf_event-style interfaces.

What the team is looking for

• Strong Python skills for building tooling, processing data, and automating workflows.
• Comfort working in C and C++ so you can reason about low-level performance systems across kernel and user space.
• Good debugging ability and a structured approach to solving technical problems.
• Experience delivering tools aimed at developers and improving them through iteration with real users.
• Ability to work across disciplines and translate performance analysis into practical engineering outcomes.
• Desirable experience with SQL, for example SQLite, for trace analysis and querying.
• Desirable familiarity with front-end web technologies such as TypeScript or JavaScript, HTML, and WebSocket for static web applications.
• Helpful exposure to hardware architecture topics including pipelines, caches, MMUs, interconnects, timers, and multithreading.
• Helpful open-source contribution history and experience with modern CI/CD workflows.
• Useful understanding of operating system fundamentals such as processes, threads, locks, and virtual memory, especially in relation to application performance.
• Helpful knowledge of assembly basics and Arm architecture concepts.

What Arm offers in return

You will have the chance to learn about and influence the latest Arm architecture features while working closely with highly skilled engineering teams on advanced, high-impact technology. The role also offers collaboration with compiler and runtime specialists as well as open-source communities, with the opportunity to contribute to language implementations used by millions of developers around the world. In addition, you will be encouraged to help improve the team’s ways of working over time.

Arm also describes its broader rewards and benefits offering as covering health and wellbeing support, flexibility that helps people balance work and life, financial rewards, and development and support for both professional and personal growth.

Working style

Arm uses a hybrid working model designed to support both strong performance and personal wellbeing. The company aims to bring people together in person so teams can work at pace, while still preserving flexibility. Each team is allowed to define the pattern that works best for its needs, so the exact arrangement for this role will be shared during the application process. In some situations, flexibility may be limited by local legal, regulatory, tax, or similar considerations, and Arm says it will work with candidates to find the best possible solution.

Visa sponsorship

If the successful applicant needs Skilled Worker sponsorship, Arm will cover the employer-side sponsorship costs. The individual will need to pay the visa application fee and the Immigration Health Surcharge themselves.

Additional support during hiring

Arm says it is committed to building strong teams and will provide recruitment accommodations where needed. Candidates who require adjustments during the hiring process can contact the company by email to request support. Examples mentioned include extra breaks between interviews, documents being read aloud, and help with office accessibility. Arm states that accommodation requests are handled confidentially and that information is only shared when necessary to arrange the support.

Other role details

• Location: Cambridge, United Kingdom.
• Job category: Software Engineering.
• Salary range: £73,500 to £99,500 per year.
• Arm describes itself as an equal opportunity employer and says it does not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or protected veteran status.

Degree Requirement: Not Specified

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