Vladimír Červeň
Chief Technology Officer at eForms
Slovakia
Summary
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Rockstar🎓
Top School
Top expert inOpen Source Software Development and Security
Vladimír Červeň is a seasoned technology leader and current Chief Technology Officer with 15 years of hands-on software engineering and leadership experience across fintech, startups, and product teams in Slovakia. He progressed from freelance and early developer roles to senior engineering and lead positions before taking on CTO responsibilities at eForms, demonstrating both delivery focus and organizational growth capability. Technically grounded, he has contributed to notable open-source projects such as libuv (documentation and test fixes) and Nix (core build/release and sandboxing work), showing attention to robustness, reproducible builds, and developer experience. His background in information systems and computer systems from Masaryk University underpins a pragmatic approach to engineering trade-offs and system design. Colleagues describe him as a meticulous problem-solver who improves developer workflows and clarifies complex behaviors—skills reflected in his documentation and build-system contributions.
15 years of coding experience
18 years of employment as a software developer
Gymnázium Jozefa Gregora TajovskéhoMaster's degree Information Systems, Master's degree Information Systems at Masaryk University Brno, Faculty of Social Studies
Czech, English, Slovenian
Stackoverflow
223reputation
9kreached
11answers
0questions
Github Skills (26)
c-language10
unix10
nix10
package-manager-tool10
declarative-programming10
lang10
declarative10
package-manager10
cprogramming-language10
documentation10
asynchronous9
networking9
io9
build-automation9
functional-programming9
Programming languages (34)
Github contributions (5)
NixOS/nix
Sep 2014 - Jan 2022
Nix, the purely functional package manager
Role in this project:
Back-end Developer & Build/Release Engineer
Back-end Developer & Build/Release EngineerContributions:2 reviews, 18 commits, 16 PRs in 7 years 5 months
Contributions summary:Vladimír primarily focused on enhancing the Nix package manager's core functionality and improving the build process. They addressed upgrade behavior issues within the `nix-env` command, refactoring code to prevent unexpected downgrades and clarify user feedback. Furthermore, the user resolved build issues related to external dependencies and improved the user environment by making modifications. Additionally, they implemented sandboxing features to the system.
nixpackage-managerpure-functionfunctional-programmingc-plus-plus
libuv/libuv
Sep 2020 - Sep 2020
Cross-platform asynchronous I/O
Role in this project:Technical Writer
Technical WriterContributions:1 commit, 5 PRs, 54 comments in 1 day
Contributions summary:Vladimír primarily contributed to improving the project's documentation. Their work included adding buffer lifetime requirements to the `uv_write` documentation, fixing a typo in the stream documentation, documenting `uv_timer_start` on an active timer, and providing a better description of Unix signal handling. The user also fixed a compiler warning in a test file.
asynchronousionetworkingunixwindows
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