Jędrzej Maczan

Hi!

I like computers. Nowadays I focus on PyTorch, compilers, Python, C++, GPU programming (CUDA, Triton, WebGPU, WGSL) and program analysis and optimization. Sometimes I code in Rust and TypeScript.

Night job: Contributing to ML compiler @ PyTorch
Day job: Applying LLMs to things
GitHub: @jmaczan
HackTheBox: @7563687575 (inactive, had fun some time ago)
LinkedIn: click
X/Twitter: @jedmaczan
Email: jedrzej@maczan.pl
Anita's paintings: anitamaczan.pl, instagram: @anita_maczan

writing

Use 20x less peak RAM with dp_knapsack_sliding_hirschberg, a new activation memory budget solver in PyTorch, 2025 GitHub
Self-contained handwritten digit recognizer, Paged Out!, Issue #7, page 11, 2025 GitHub
A primer on Differentiable Architecture Search, Paged Out!, Issue #6, page 5, 2025 GitHub
GPT in PyTorch, Paged Out!, Issue #5, page 6, 2024 GitHub
Building automated machine learning with type inference, Paged Out!, Issue #4, page 4, 2024 GitHub

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