Marek Janda
Full Stack Developer System Analyst at nyx.cz
Prague, Prague, Czechia
Summary
👤
Senior🎓
Top SchoolMarek Janda is a pragmatic full stack developer and system analyst with 11 years of experience building and maintaining production systems across telecom, consulting and independent projects. He drives work end-to-end—from requirements and system analysis to server configuration and deployment—working professionally on a PHP/Java/Oracle stack while exploring Rust and PostgreSQL in personal projects. At O2 Czech Republic he develops internal sales tools, and his long-running nyx.cz forum showcases his ability to evolve a live service across stacks (PHP/MySQL to Rust/Postgres) and cloud services. An active contributor to open-source front-end tooling, he improved synchronization and UX edge cases in the widely used dygraphs library. Trained originally in psychology, Marek brings user-focused thinking and practical curiosity to technical problem solving.
11 years of coding experience
Master's degree, PSYCHOLOGY, Master's degree, PSYCHOLOGY at Charles University
Stackoverflow
11reputation
2kreached
1answer
1question
Github Skills (11)
dygraphs10
javascript10
visualization10
visualizations10
chartjs10
canvas10
charting10
charts10
html8
python6
flask6
Programming languages (9)
Github contributions (5)
danvk/dygraphs
Feb 2015 - Jun 2015
Interactive visualizations of time series using JavaScript and the HTML canvas tag
Role in this project:
Front-end Developer
Front-end DeveloperContributions:16 commits, 4 PRs, 9 comments in 4 months
Contributions summary:Marek primarily worked on the `extras/synchronizer.js` file, enhancing the synchronization functionality of the dygraphs library. These changes involved storing and reattaching callbacks to maintain functionality when the graphs are detached, and also included bug fixes related to the legend positioning and range selection within fullscreen elements. In addition, the user refactored code for line length and updated comments.
charting-librarycanvasjavascriptdygraphsinteractive-visualizations
mjanda/PHP_XLSXWriter
Sep 2016 - Nov 2021
Contributions:2 PRs, 7 pushes in 5 years 3 months
xlsxphpwriterexcelspreadsheet
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