Zsolt Kozaróczy
Sr Software Engineer at Instructure
Budapest, Hungary
Summary
🤩
Rockstar🎓
Top SchoolZsolt Kozaróczy is a senior software engineer based in Budapest with 11 years’ experience building Ruby on Rails backends and GraphQL APIs, currently advancing educational software at Instructure. He led full-stack development and mentoring at App Maintainers, steering architecture, code reviews, recruitment, and weekly dev processes for several years. An active open-source contributor, he has improved the popular caxlsx gem with charting features, special character fixes and usability enhancements. Beyond Rails he explores Elixir, Rust and self-hosted tooling, bringing curiosity and a pragmatic multi-language perspective to production systems.
11 years of coding experience
8 years of employment as a software developer
Bachelor of Science - BS, Computer Science Engineer, Bachelor of Science - BS, Computer Science Engineer at Budapest University of Technology and Economics
Github Skills (2)
ruby10
testing8
Programming languages (15)
Github contributions (5)
caxlsx/caxlsx
Sep 2019 - Oct 2022
xlsx generation with charts, images, automated column width, customizable styles and full schema validation. Axlsx excels at helping you generate beautiful Office Open XML Spreadsheet documents without having to understand the entire ECMA specification. Check out the README for some examples of how easy it is. Best of all, you can validate your xlsx file before serialization so you know for sure that anything generated is going to load on your client's machine.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 96 reviews, 16 commits in 3 years 1 month
Contributions summary:Zsolt contributed to the `caxlsx/caxlsx` repository, which focuses on generating Excel files. Their contributions primarily involved bug fixes, code enhancements, and feature implementations related to chart generation, special character handling, and example restructuring. The user also added the capability to define a series color for bar charts and added an overlap option to bar charts. These changes improved the library's functionality and addressed user reported issues, resulting in a more feature rich and user-friendly library.
axlsxecmaopenxmlschema-validationserialization
kiskoza/dev-containers
Nov 2022 - May 2025
Contributions:3 releases, 5 pushes, 1 branch in 2 years 6 months
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