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Senior/Staff Performance Tools Engineer

Job ID 2023-9556 Date posted Aug. 07, 2025 Location Cambridge, United Kingdom; Manchester, United Kingdom; Budapest, Hungary Category Software Engineering Apply

We are looking for skilled software engineers to build tools that will shape how performance evaluation and analysis is done on Arm platforms.

About The Team

We build Arm’s Telemetry solution—a set of open‑source reference tools that demonstrate Arm’s performance methodologies across compute subsystems (CPU, interconnects, memory systems, and more). We collaborate with architects across Arm IP groups to turn their methodologies into practical tooling. Our work enables Arm’s internal performance teams, partners, and the wider open‑source community.

We also ensure the capabilities we build land in Google’s Perfetto by contributing features to its tracer, analyzer, and UI.

What you’ll do

  • Build & evolve Telemetry solution so developers can apply performance methodologies on Arm and act on performance signals.
  • Contribute to Perfetto to make Arm performance methodologies first‑class on Android.
  • Work with architects & analysis teams to translate findings and requirements into features, tests, examples and documentation.
  • Validate performance methodologies with synthetic workloads and targeted microbenchmarks (occasionally in Arm assembly).
  • Partner with kernel and firmware teams to ensure the right performance‑measurement primitives (PMUs, perf_event interfaces, etc) exist and are usable.

How we work

Nobody checks every box! We value learning velocity and curiosity about how compute systems really work. We give time to ramp on unfamiliar languages/stacks (C++ in Perfetto, kernel perf system, TS/JS, SQL).

Engineers typically own larger features end-to-end, which gives space to build deep expertise in the domain. You won't be alone in the process: We’re collaborative, and incrementally do code design and review as a team.

Core Skills:

  • Strong Python for tooling, data processing, and workflow automation.
  • Comfortable in C/C++ to contribute to Perfetto’s tracer/analyzer (C++), and read Linux kernel C to reason across kernel performance systems.
  • Proficient debugging & problem‑solving skills.
  • Experience shipping developer‑facing tools and iterating with real users.

Desirable Skills

  • SQL (e.g., SQLite) for trace querying/analysis.
  • Web technologies (TS/JS, HTML, WebSocket/WebUSB) for Perfetto UI integrations.
  • Exposure to hardware system architecture (pipelines, caches, MMUs, interconnects, timers, multithreading).
  • Open‑source contributions and modern CI/CD experience.
  • Good understanding of OS primitives (processes, threads, locks, virtual memory) and how they relate to application performance.
  • Assembly basics and familiarity with Arm architecture.

Education & Qualifications:

Established experience or a Bachelor’s (or above) degree or equivalent experience in a STEM subject.

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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 accommodations@arm.com. 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.

Power the Future on Arm

Working in software engineering at Arm is about shaping a future of technology for which we don't yet have words. Our engineers lead innovation in physical IP, AI and machine learning, cloud architecture, automotive tech, and every aspect of computing that matters.

Spanning software's full spectrum, from compilers to AI-powered IoT and beyond, your code can enable virtually anything to be produced on silicon. Whether you're developing award-winning VR gaming or life-enhancing medical equipment, you can improve the lives of millions by being your brilliant self at Arm.

Drive change on Arm

At Arm, you'll influence 95% of the world's connected devices and all their applications. From healthcare and infrastructure to virtual reality, you'll affect nearly all industries worldwide, racing toward new milestones and achievements together.

Revolutionary Benefits

Health and Wellness

We create a safe space for you to nurture both your physical and mental wellbeing.

Work and Life Success

We empower people to experience life beyond the boundaries of standard work patterns.

Financial Rewards

We provide benefits beyond a competitive salary to reward our people for their dedication and contributions.

Development and Support

We foster professional and personal development, building a supportive community where everyone can thrive.

Life at Arm

Life in the office doesn't get any better — especially when those offices are as sleek as ours and the people there are creative and compassionate. Combine that with our popular 'we, not I' mindset, and you enjoy the kind of teamwork and togetherness rarely found elsewhere. We share so much in common, not least the same passion for progress, but we also welcome each other's diversity. Ultimately, we love to inspire and be inspired every day.

Discover Life at Arm

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