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# Senior Performance Tools Engineer

- **Company:** Arm Limited
- **Location:** Cambridge, UK
- **Experience:** Expert
- **Salary:** £73,500.0 - £99,500.0
- **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, Web Technologies, Front End Software Development
- **Published:** September 9, 2026
- **Apply:** https://www.collegerecruiter.com/job/2840693233-senior-performance-tools-engineer

## 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.

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

* 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.