> Markdown version of [/jobs/ext/2140775-staff-performance-tools-engineer](https://www.wearedevelopers.com/jobs/ext/2140775-staff-performance-tools-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Performance Tools Engineer - **Company:** Arm Limited - **Location:** Manchester, UK - **Salary:** £97,300.0 - £131,700.0 - **Contract:** Permanent contract - **Skills:** HTML, Application Performance Management, ARM Architecture, Continuous Integration, Software Debugging, Firmware, Python (Programming Language), Open Source Technology, SQLite, SQL Databases, Virtual Memory, Web Applications, WebSocket, Data Processing, Caching, Performance Monitor, Free and Open-Source Software, Build Tools, Web Technologies, Front End Software Development - **Published:** August 20, 2026 - **Apply:** https://www.totaljobs.com/job/tools-engineer/arm-job107873358 ## About the Role * Strong 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. * Experience owning complex features end-to-end. "Nice To Have" Skills and Experience : * SQL (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. ## Description We are looking for experienced software engineers to build tools that will shape how performance evaluation and analysis is done on Arm platforms. 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. 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 (kernel perf subsystem, TS/JS, SQL)., * Build & 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., You 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. ## Related Videos - [Unleashing the Full Potential of the Arm Architecture – Write Once, Deploy Anywhere](https://www.wearedevelopers.com/videos/940-unleashing-the-full-potential-of-the-arm-architecture-write-once-deploy-anywhere) - [HTTP headers that make your website go faster](https://www.wearedevelopers.com/videos/1676-http-headers-that-make-your-website-go-faster) - [Introduction to TXT](https://www.wearedevelopers.com/videos/30-introduction-to-txt) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Catching up on the basics you don't really need that much code](https://www.wearedevelopers.com/videos/903-catching-up-on-the-basics-you-don-t-really-need-that-much-code) - [Passive ARM Assembly Skills for Debugging, Optimization (and Hacking)](https://www.wearedevelopers.com/videos/1083-passive-arm-assembly-skills-for-debugging-optimization-and-hacking) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 139 - Soft and hard queries](https://www.wearedevelopers.com/magazine/487-dev-digest-139-soft-and-hard-queries) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 102 - Race conditions](https://www.wearedevelopers.com/magazine/386-dev-digest-102-race-conditions) - [Dev Digest 113 - Debugging above the cloud](https://www.wearedevelopers.com/magazine/422-dev-digest-113-debugging-above-the-cloud) - [Dev Digest 119 - ❤️ === ❤️](https://www.wearedevelopers.com/magazine/454-dev-digest-119)