Ceki Gülcü
Founder at QOS.ch (Switzerland)
Lausanne, Vaud, Switzerland
Summary
🤩
RockstarCeki Gülcü is a seasoned software founder and logging systems expert with 21 years of experience, based in Lausanne, Switzerland. He founded the widely used log4j 1.x, slf4j and logback projects and continues to maintain slf4j, logback and reload4j, demonstrating deep, long-term commitment to reliable logging infrastructure. His hands-on contributions span core library improvements and test automation, such as stabilizing logback-android by addressing duplicate listeners and hard-to-detect constructor deprecations. Unaffiliated with log4j 2.x, he maintains an independent stance that underscores his focus on pragmatic, maintainable tooling rather than ecosystem politics. Comfortable operating at both project leadership and implementation levels, he blends open-source stewardship with meticulous engineering. Colleagues value his rare combination of founding vision and attention to low-level robustness that keeps logging reliable in production systems.
21 years of coding experience
French
Stackoverflow
26,997reputation
4.7mreached
217answers
1question
hibernate
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java
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tomcat
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slf4j
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maven
top-5%
logging
top-1%
Github Skills (28)
unit-testing10
exceptions10
lib10
logback10
testing10
logger10
java10
javas10
log4j10
audit-logging10
android10
tracelogging10
logging10
slf4j10
web-application9
Programming languages (4)
Github contributions (5)
tony19/logback-android
Mar 2013 - Apr 2014
📄The reliable, generic, fast and flexible logging framework for Android
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:7 commits, 1 comment in 1 year
Contributions summary:Ceki primarily focused on enhancing the robustness and maintainability of the logback-android library, specifically by addressing issues related to duplicate status listeners and deprecated constructors. Their work involved modifying core components like `BasicStatusManager` and `CharSequenceToRegexMapper`. Furthermore, the user implemented and modified unit tests to ensure the correct behavior of the library, as evident in changes to test files. These changes, coupled with the context of the repository, suggest an emphasis on improving the stability and functionality of the logging framework.
androidlogginglogbacklogging-libraryjava
ceki/logback-perf
Mar 2016 - Sep 2022
Performance related project
Contributions:75 commits, 1 PR, 70 pushes in 6 years 7 months
performance
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