Grzegorz Grzybek
Senior Software Engineer at Red Hat
Wrocław, Lower Silesian Voivodeship, Poland
Summary
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RockstarGrzegorz Grzybek is a Senior Software Engineer with 15 years of experience, based in Wrocław and currently at IBM, who specializes in backend systems, OSGi environments, and integration frameworks. He is an active open-source contributor with notable work across high-profile Apache projects (Camel, CXF, Karaf, Aries) and Keycloak, often tackling transaction management, classloading, and database-specific reliability issues. His contributions show a blend of deep protocol-level fixes and pragmatic engineering—e.g., implementing PostgreSQL-specific aggregation repositories, improving JDBC transaction propagation, and hardening CORBA/one-way messaging paths. He also bridges backend and frontend concerns, improving developer-facing UIs in Hawtio for clearer UX and diagnostics. Colleagues know him for methodical bug fixes that prevent regressions and for making complex middleware behave more predictably in real-world deployments.
15 years of coding experience
Stackoverflow
6,217reputation
801kreached
140answers
4questions
maven
top-5%
java
top-5%
xml
top-5%
xsd
top-5%
dependency-management
top-5%
validation
top-5%
Github Skills (85)
transaction10
web-application10
saml10
fuse10
apache-karaf10
testing10
oid10
apache-camel10
integrations10
javas10
transactionscope10
karaf10
web-development10
javascript10
cxf10
Programming languages (12)
Github contributions (5)
ops4j/org.ops4j.pax.web
Feb 2015 - Jan 2023
OSGi R7 Http Service, Whiteboard and Web Applications (OSGi CMPN Release chapters 102, 140 and 128) implementation using Jetty 9, Tomcat 9 or Undertow 2.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:24 reviews, 1202 commits, 81 PRs in 8 years
Contributions summary:Grzegorz's commits indicate they are working on the back-end of the ops4j/org.ops4j.pax.web project, specifically implementing features and modifying code related to Java Servlet and JAX-RS specifications. They have been upgrading schemas, implementing features such as session cookie configuration and web element registration. Furthermore, the user has been involved with testing aspects of the software related to the same topics.
chaptersweb-applicationsundertowhttp3osgi
hawtio/hawtio
Apr 2014 - Sep 2021
Hawtio web console helps you manage your JVM stuff and stay cool!
Role in this project:Front-end Developer
Front-end DeveloperContributions:31 reviews, 277 commits, 72 PRs in 7 years 6 months
Contributions summary:Grzegorz primarily focused on improving the user interface and user experience aspects of the Hawtio web console. Their commits centered around unifying the capitalization of labels across various UI elements, including buttons and form fields. The changes involved modifications to HTML and preferences files, indicating a focus on improving the visual consistency and usability of the interface. Furthermore, they added functionality for enabling verbose notifications, indicating a focus on user feedback regarding backend operations.
consoleweb-appjvmhawtioweb-console
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