:: about ::

hello, traveller. you've stumbled onto a quiet corner of the net belonging to Kamila Szewczyk, known online as iczelia.

» vital statistics

» elsewhere on the wires

• github @iczelia
• mastodon @iczelia@glauca.space
• bluesky iczelia.net
• matrix @kamila:coven.iczelia.net
• patreon patreon.com/iczelia
• code.golf (top 100) code.golf/golfers/iczelia
• projecteuler iczelia
• email (private) k@iczelia.net
• email (APL/Dyalog) kamila@dyalog.com
• email (faculty) szewczyk@cs.uni-saarland.de
• email (student aff.) kamila@cs.fs.uni-saarland.de
• pgp C868 F0B6 DE38 409D
• demozoo @iczelia

Feel free to reach out to me. I am also up for answering questions about my projects and giving advice on my areas of expertise. For that, just send me an e-mail.

» employment

Main production languages I've used to ship production systems:

• C
• C++
• Rust
• APL

Self-assessment of my skills (via popular open-source projects):

• Expert: C, C++, APL, Lisp, x86/8051/6502/Z80 assembly, Perl, Java/JVM, LaTeX
• Comfortable user: Lua, TypeScript, ActionScript, Rust, Haskell, OCaml
• Learner: Python, Haxe, Prolog, Erlang, Elixir, MIPS assembly, Mathematica
• Esoteric languages: asm2bf, Brainfuck, Malbolge (you can read about me on Wikipedia!), Seed, Befunge 93/98...

Currently a research assistant at Saarland University, previously a researcher and programmer at Dyalog Ltd., with some intermediate odd jobs in-between.

» talks, guest lectures and papers

• B.Sc thesis under supervision of Prof. Dr. Sven Rahmann and Prof. Dr. Sebastian Hack: Referential and Reference-free Genomic Sequence Compression
• Dyalog'23 in Helsingør, talk: An Implementation of the APL Array Notation
• APL Germany Herbsttagung 2023 in Berlin Adlershof: Seemingly Impossible APL Programs
• APL Germany Journal 2023: Seemingly Impossible APL Programs
• ArrayCast, Ep. 74, 2024: KamilaLisp and Kamila Szewczyk
• Iverson College 2024: Data Compression in Depth
• 18 Sesja Linuksowa in Wrocław (2024): Statistical Data Compression
• 19 Sesja Linuksowa in Wrocław (2025): Can we fit Linux on just a Floppy Disk?
• Lambda World 2024 in Cádiz: Concrete Functional Programming
• arXiv:2603.15390 (2026); Kamila Szewczyk, Sven Rahmann: Hecate: A Modular Genomic Compressor
• arXiv:2605.00579 (2026); Kamila Szewczyk: Fast and Exact: Asymptotically Linear KL-Optimal Frequency Normalization

» links

Various more or less hidden sub-pages of this site:

• JCram v1
• Sophie Germain Prime Project

» hardware

• Main PC, "Legendre": Ryzen 9 3900X, 32GB 3600MHz DDR4, TUF X570, RM White 850W 80 Plus Gold, NZXT H510 Black, PNY 1TB M.2 PCIe NVMe, Noctua NH-D15 2x140mm.
• Laptop, "Lagrange": Thinkpad X13 Gen4, Ryzen 7 PRO 7840U, 64 GB RAM.
• Laptop II, "Laplace": ThinkPad E14 gen 3, Ryzen 7 5700U, 40 GB RAM, M.2 PCIe 512 GB.

Decommissioned machines:

• "Lovelace" (i5-7400, 16GB, 2x2TB WD Blue, headless, c. 2021)
• "Libri" (Cortex-A53, 1GB, c. 2018)
• "LeVerrier" (AMD Phenom II X4 955, 4GB, c. 2010)

» setup

• Basics: x86_64 Debian Sid, zsh, Alacritty, Firefox, Thunderbird, VSCode, Audacious, HexChat.
• WM: Enlightenment E16 (WashedBlue) including custom modifications, for multi-monitor support, extended in-WM keybindings and rudimentary tiling support.

» patreon

My patreon page is here. Thank you for all the donations. The 10€ tier members (as of now; updated Apr2026) are:

• Christian Gibson (@bygibson)
• Hugo Martin (@mont.bar)

» misc

From 2019 to 2021, I received the KFnrD scholarship, a Polish organisation which supports highly gifted schoolchildren. Native Polish, C2 English, B1 German. Also dabbling in Russian and Latin.

Non-STEM interests:

• Early modern history (Europe and Asia).
• Surgical medicine.
• Chess.
• Psychology; cognitive science and human sexual behaviour.
• Music (module trackers).
• Typesetting and writing.
• Linguistics, particularly concerning the English language.

Travel list, notable places I have seen or stayed at:

• Warsaw, Wrocław, Lublin, Gdańsk (Poland)
• Berlin, Hamburg, Frankfurt, Bochum, Köln, Saarbrücken, München, Heidelberg (Germany)
• Rome, Venice (Italy)
• Cádiz, Jerez, Mallorca (Spain)
• Copenhagen (metropolitan area), Helsingør, Hellebæk (Denmark)
• London, Basingstoke, Cambridge, Bramley (United Kingdom)
• Toronto, Guelph, Waterloo, Kitchener (Canada)