Senior Performance Tools Engineer

Job OverviewWe 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.ResponsibilitiesBuild & evolve Telemetry solution so developers can apply performance methodologies on Arm and act on performance signals.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.Required Skills and ExperienceStrong Python for tooling, data processing, and workflow automation.Comfortable in C/C++ to reason across kernel and userspace low level performance systems.Proficient debugging & problem‑solving skills.Experience shipping developer‑facing tools and iterating with real users.Nice to Have Skills and ExperienceSQL (e.g., SQLite) for trace querying/analysis.Web technologies (TS/JS, HTML, WebSocket) for static web apps frontend.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.BenefitsYou will have the opportunity to learn about and influence the latest Arm architecture features, working closely with highly skilled engineering teams on ground‑breaking technology. You will collaborate with diverse compiler and runtime teams and open‑source communities, contributing to language implementations used by millions of developers worldwide. You will be empowered to continually identify and roll out improvements to our ways of working.Equal Opportunities at ArmArm 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.Salary Range£73,500 - £99,500 per year

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