License
What this covers
The editorial content of this site is licensed under Creative Commons Attribution 4.0 International (CC BY 4.0).
That means the page text, the blog posts, the project, skill, experience and certification write-ups, and the machine-readable representations generated from them — the Markdown twins, /about.md and llms.txt — are yours to copy, republish, translate, quote, excerpt and build upon, including commercially.
Code samples embedded in blog posts are covered by CC BY 4.0 like the prose around them, unless the post names different terms for a particular snippet. Where it does, that snippet's terms win.
What you have to do
Credit Aleksandr Filippov and link back to the page you took the material from. If you changed it, say so — a translated, abridged or adapted version should not read as though I wrote it that way. You may not add restrictions that stop anyone else doing the same.
That is the whole obligation. You do not need to ask first, and you do not owe me a notification, though I am glad to hear about it.
What this does not cover
Terms that silently over-claim are worse than none, so these four exclusions are stated explicitly.
The site's own source code. The Hugo templates, the CSS and the JavaScript that render this site are not covered by this page. They are governed by whatever the repository itself states, and permission to reuse my writing is not permission to reuse the machinery around it.
Third-party marks and icon sets. Trademarks, logos and vendor icons appearing on this site belong to their owners and are used here nominatively — Font Awesome glyphs, the GitHub, Hugging Face and arXiv marks, and the logos of the organizations that issued my certifications. CC BY 4.0 grants no trademark rights, and nothing here purports to grant any.
The portrait photograph. The image at /images/personal-website-photo.jpg is a personal likeness. All rights reserved. It is not part of the covered content, and reuse needs my written permission.
The CV. The document at /aleksandr-filippov-cv.pdf is a job-application document about a specific person. All rights reserved.
Attribution you can copy
"[Title of the page]" by Aleksandr Filippov, used under CC BY 4.0.
If you want something else
The exclusions above are not a refusal, they are a boundary. If you want to use the portrait, the CV, or the site's code, or you want terms other than CC BY 4.0 for the writing, ask me. I usually say yes.