Bartosz Baranowski
Senior Software Engineer at IBM
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolBartosz Baranowski is a senior software engineer with 18 years of hands-on experience building and stabilizing Java-based middleware and application server ecosystems. He has deep back-end expertise demonstrated by long-term contributions to flagship open-source projects like WildFly, Elytron and Undertow, improving security, HTTP/2 handling, EJB lifecycle and cross-platform tooling. A longtime Red Hat/JBoss contributor now at IBM, he specializes in resolving complex runtime and deployment issues, including platform-specific script fixes and subtle parser and logging bugs. Colleagues rely on him for durable, specification-compliant fixes that quietly raise system reliability and security. He combines low-level debugging chops with a pragmatic eye for maintainable server-side design, and often surfaces improvements that prevent hard-to-reproduce production problems. Based in Warsaw, he brings institutional knowledge of enterprise Java stacks plus a track record of impactful open-source maintenance.
18 years of coding experience
22 years of employment as a software developer
Warsaw University of Technology
Github Skills (32)
authorizations10
scripting10
http10
user-authentication10
authentication10
java10
security10
servlet10
javas10
script10
api10
wildfly10
authorization10
webserver10
sh10
Programming languages (8)
Github contributions (5)
undertow-io/undertow
Jul 2020 - Dec 2022
High performance non-blocking webserver
Role in this project:
Back-end Developer
Back-end DeveloperContributions:111 reviews, 94 commits, 246 PRs in 2 years 4 months
Contributions summary:Bartosz primarily contributed to the Undertow webserver by fixing bugs and improving the functionality of the HTTP/2 implementation. Their work included removing duplicate variable definitions, updating cookie configurations, and fixing path normalization in the PathTemplateMatcher. Further contributions involved enhancing the handling of streams, async context operations, and file uploads. The user's efforts improved the server's stability, security, and compliance with relevant specifications.
golangnon-blockingsslweb-serverperformance
wildfly/wildfly-core
Sep 2014 - Mar 2022
The core runtime that is used by the WildFly application server
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 review, 23 commits, 25 PRs in 7 years 7 months
Contributions summary:Bartosz primarily contributed to the WildFly core runtime, focusing on improving and maintaining shell scripts and core Java code. Their work included fixing platform-specific issues in shell scripts, particularly related to Windows and Linux environments. They also addressed a bug in the command-line interface and made changes to support the addition of warning capabilities within the core. Additionally, the user made contributions to deployment and other core functionalities.
wildflymavenruntimerundeckweblogic
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