Jonathan Simmonds
Principal Software Engineer at Arm
Cambridge, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolJonathan Simmonds is a Principal Software Engineer with 13 years’ experience at Arm, where he leads the Fast Models team building functionally accurate models for GPUs, DPUs, VPUs, ISPs and NPUs. A technically-minded generalist, he has shipped large C++ and Java codebases across CPU modelling, debug tooling, engineering efficiency and infrastructure, and has repeatedly driven architecture, process improvement and centralized technical debt remediation. He is a practiced people leader and mentor with 5+ years as a line manager and is a Certified ScrumMaster who cares deeply about early-career development. Accredited as an Arm Accredited Engineer, he blends embedded systems knowledge (baremetal, RTOS, Linux) with UX, licensing and build/test infrastructure experience. Outside work he maintains open-source projects, races and rides as a keen cyclist, and builds precision in the workshop as a woodworker—habits that mirror his focus on craftsmanship in software.
13 years of coding experience
11 years of employment as a software developer
Peter Symonds CollegeKings' School WinchesterMaster of Engineering (MEng) Computer Science, Master of Engineering (MEng) Computer Science at University of Bristol
Github Skills (10)
refactoring8
linter6
python6
theorem4
git4
desktop2
linux2
x112
xcb2
windows2
Programming languages (3)
Github contributions (5)
jonsim/openconsult
Jan 2023 - Jan 2023
Contributions:56 commits, 46 pushes, 1 branch in 17 days
jonsim/local-lfs
Jun 2018 - Jul 2018
git-lfs server designed to be self-hosted and store binary files in a compressed form suitable for cloud storage platforms
Contributions:36 commits, 22 pushes, 1 branch in 16 days
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