Senior Software Engineer in AI Frameworks
focused on ML performance and production readiness.

I build and optimise machine-learning systems for Arm CPUs, spanning framework integration, performance engineering, and release tooling.

Puneet Matharu, PhD · Senior Software Engineer in AI Frameworks
My opinions are my own and not those of my employer.

Experience

See journey

Current

Senior Software Engineer, AI Frameworks
Arm

Working across open-source ML framework integrations to improve runtime performance, shipping quality, and release readiness on Arm CPUs.

Previous

Senior Imaging Algorithms Engineer
Arm

Developed and tuned imaging algorithms in the ISP pipeline and supported embedded ML workloads where quality and efficiency were both critical.

Earlier

PhD in Applied Mathematics
University of Manchester

Researched nonlinear fluid dynamics and numerical computation of time-periodic PDE solutions, resulting in Journal of Fluid Mechanics publications.

Selected impact

ML Frameworks

Integrated upstream changes across the ML stack

Helped deliver updated Arm CPU framework builds by combining upstream work across PyTorch, oneDNN, Arm Compute Library, and OpenBLAS into shippable tooling.

Performance

Improved model throughput on real workloads

Investigated PyTorch → oneDNN → Arm Compute execution paths and enabled missing dispatch routes to resolve practical bottlenecks.

Build + CI

Reduced cycle time for engineering teams

Improved build systems and contributed upstream changes that delivered notable CI speedups (including ~2.7× improvements in targeted flows).

Release + Compliance

Restored external Docker delivery

Worked through compliance requirements and automated repetitive release checks to re-enable external image publishing.

Research & Publications

The time-periodic 2S vortex-shedding pattern in the wake behind an oscillating cylinder (Re = 100).

I completed my PhD in applied mathematics at the University of Manchester, with a focus on fluid dynamics and the numerical solution of time-periodic solutions to partial differential equations (otherwise known as PDEs).

For modest Reynolds numbers (Re ≤ 100), a fixed cylinder sheds vortices in a classical 2S pattern, known widely as the Kármán vortex street. When the cylinder oscillates with a period close to the natural shedding frequency, increasing the oscillation amplitude leads to a transition to a different, asymmetric wake pattern (the P+S pattern). A central question of the thesis was whether this transition arises through a continuous (topological) evolution of the flow or via bifurcations of the Navier–Stokes equations.

ORCID: 0000-0001-9359-9814