AI RESEARCHER · PRODUCT BUILDER
I turn ambiguous technical problems into working systems.
AI research, real products, and a bias for action.
I like problems that don't have an obvious answer yet.
Research when needed. Build when possible. Ship what matters.
02 / PROJECTS
Things I'm building
WHY THEY EXIST, NOT HOW THEY'RE BUILT
— AUDIO
Hathor
Turn entire books into audio for the price of a coffee.
Paste text, upload an EPUB, or drop a JSONL batch — Hathor turns it into natural, high-fidelity speech. Voice cloning, voice design, and an HTTP API, at a fraction of the usual cost.
ExploreTEXT → AUDIO
— REFERENCE
Study notes
Thousands of pages of notes, rewritten to stay useful.
My compilation of notes from various subjects — continuously migrated, rewritten, and simplified. Zettelkasten-style: short, easy to follow, one subject per note.
ExploreNOTES → KNOWLEDGE
03 / WRITING
Notes, ideas, and learnings
04 / RESEARCH
Longer-lived technical work
REFERENCES AND EXPERIMENTS
05 / ABOUT
I'm Marek — principal engineer, AI researcher and product builder. I like working at the intersection of research, systems and real-world applications, especially when the path isn't clear yet. I write, build, experiment, and try to leave useful things behind.