Ján Osuský
Product Owner at IBL Software Engineering Portugal Lda.
Vila Nova de Gaia, Portugal
Summary
👤
Senior🎓
Top SchoolJán Osuský is a Product Owner and seasoned software engineer with nine years of experience building and shipping C++-centric systems for meteorological data distribution, complemented by Python and Java work and a strong Linux background. He combines hands-on development, QA and training with product leadership, recently helping establish IBL’s new office in Vila Nova de Gaia while still contributing technically. His contributions to the well-known libarchive project strengthened tar handling robustness and test coverage, reflecting a practical focus on reliability and edge-case defense. Active in WMO expert teams, he brings domain expertise in meteorological standards and data exchange that informs product and engineering decisions. Comfortable across backend APIs and Qt GUIs, he pairs deep technical craftsmanship with user-facing training and occasional project management and pre-sales experience.
9 years of coding experience
27 years of employment as a software developer
Engineer's degree, Constructions and Civil Engineering, Engineer's degree, Constructions and Civil Engineering at Slovenská technická univerzita v BratislaveHigh School, High School at Gymnázium MalackyHigh School, Mathematics, Physics and ... French, High School, Mathematics, Physics and ... French at Gymnázium Banská Štiavnica - graduation year
English, French, Spanish
Github Skills (7)
c1710
tar10
c1110
archiving10
testing10
7zip4
xz4
Programming languages (6)
Github contributions (5)
libarchive/libarchive
Nov 2016 - Nov 2016
Multi-format archive and compression library
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:5 commits, 2 PRs, 4 comments in 9 days
Contributions summary:Ján contributed to the `libarchive/libarchive` project by focusing on enhancing the robustness and reliability of the tar archive format handling. They implemented sanity checks on critical fields within tar headers, mitigating potential vulnerabilities caused by misidentified file types. The user added new tests, specifically addressing cases where raw files were incorrectly identified as tar archives, and expanded test coverage to encompass non-standard tar implementations. They also modified existing code to handle GNU tar specific encoding.
multi-formatrarbz2backupposix
josusky/vmime
Oct 2017 - Mar 2024
VMime Mail Library
Contributions:6 pushes, 2 branches in 6 years 5 months
mailemailsmtp
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