Jan Zikeš
Vedoucí Tajemník at Konfederace zaměstnavatelských a podnikatelských svazů ČR
Prague, Prague, Czechia
Summary
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RockstarJan Zikeš is an experienced technical professional with 12 years of hands-on software development and long-term leadership at the Konfederace zaměstnavatelských a podnikatelských svazů ČR in Prague. Although formally titled Vedoucí tajemník, he maintains an active engineering footprint as an open-source back-end contributor, notably improving streaming utilities and topic-modeling code in well-known projects like smart_open and gensim. His work on WebHDFS support, read/seek semantics, and multiprocessing LDA shows a practical focus on scalable I/O and performance-sensitive algorithms. Jan blends institutional leadership with deep, low-level engineering instincts—patching core libraries, adding tests, and optimizing batch processing—so he’s comfortable moving between organizational strategy and code.
12 years of coding experience
Stackoverflow
2,657reputation
274kreached
17answers
45questions
Github Skills (28)
gensim10
python10
machine-learning10
python-multiprocessing10
hdfs10
webhdfs10
file-handling10
multi-process10
topic-modeling10
multiprocessing10
nlp10
streaming10
boto9
http-request9
amazon-s39
Programming languages (5)
Github contributions (5)
piskvorky/gensim
Sep 2014 - Nov 2015
Topic Modelling for Humans
Role in this project:
Back-end Developer
Back-end DeveloperContributions:38 commits, 7 PRs, 2 pushes in 1 year 2 months
Contributions summary:Jan primarily worked on the implementation and improvement of the LDA model within the gensim library. Their contributions include the initial implementation of LDA with multiprocessing, followed by bug fixes and optimizations. They also refactored and cleaned the code, including performance enhancements and batch version implementation, demonstrating a focus on improving the efficiency and stability of the LDA model.
pythonword-similarityword-embeddingsdata-miningfor-humans
piskvorky/smart_open
Apr 2015 - Sep 2015
Utils for streaming large files (S3, HDFS, gzip, bz2...)
Role in this project:Back-end Developer
Back-end DeveloperContributions:32 commits, 11 PRs, 23 pushes in 4 months
Contributions summary:Jan primarily contributed to the `smart_open` library by implementing and extending support for various file streaming protocols, notably WebHDFS. They added the capability to read and write from WebHDFS, integrating features such as read and seek functionalities. The contributions included bug fixes and improvements to the HDFS and S3 implementations and the addition of comprehensive tests to ensure the reliability of the new functionalities.
pythondata-storagegzipstreambz2
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