Marcin Wojnarski
Founder & CEO at Paperity
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolMarcin Wojnarski is a founder and ML/AI leader with 14 years of professional experience and a 20-year track record in building production-grade AI systems, from dynamic pricing and revenue management to OCR/NER and medical-stroke prediction. A 41st IMO medalist turned entrepreneur, he built Paperity—the first multidisciplinary open-access aggregator indexing 10M+ full-text articles—and earlier launched TunedIT, a precursor to modern ML competition platforms. He combines deep algorithmic expertise (compilers, compression, suffix structures) with hands-on engineering in Python, TensorFlow/PyTorch, GCP and scalable data pipelines, delivering solutions deployed in finance, airlines, healthcare and publishing. His portfolio includes 15 academic papers, two patent applications, and open-source projects like Hypertag and Nifty on GitHub, reflecting both research rigor and practical tooling. Known for solving unusually hard problems—e.g., inventing new name-similarity algorithms and achieving dramatic accuracy improvements in image and signature recognition—he blends strategic product vision with low-level technical inventiveness. Based in Warsaw, he excels at turning complex unstructured data challenges into reliable, evidence-driven ML products.
14 years of coding experience
18 years of employment as a software developer
PhD studies (no dissertation) Computer Science, PhD studies (no dissertation) Computer Science at University of WarsawInterdisciplinary Studies in Mathematics and Natural Sciences (SMP), Interdisciplinary Studies in Mathematics and Natural Sciences (SMP) at Jagiellonian University
Stackoverflow
2,540reputation
2.3mreached
25answers
2questions
math
top-5%
python
top-5%
statistics
top-5%
Github Skills (50)
pytorch10
python10
machine-learning10
llm10
audio10
natural-language-processing10
nlp10
machine-learning-models9
transformers9
math9
multimodal9
inference9
statistics9
deep-learning9
templating9
Programming languages (4)
Github contributions (5)
mwojnars/hypertag
Feb 2021 - Oct 2021
HTML templates with Python-like concise syntax, code reuse & modularity. The Pythonic way to web templating.
Contributions:6 releases, 1 review, 51 commits in 8 months
code-reusehtml-templatepythontemplatingtemplates
mwojnars/nifty
Mar 2014 - Jan 2022
Nifty Python toolbox - utilities, one-liners, ML & Data Science tools
Contributions:204 commits, 5 PRs, 214 pushes in 8 years
data-sciencemachine-learningpython
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