Matthias Wessendorf
Director of Engineering at Red Hat
Emsdetten, North Rhine-Westphalia, Germany
Summary
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RockstarMatthias Wessendorf is a Director of Engineering with 21 years of hands-on experience building and operating cloud-native, event-driven systems from Germany. He combines leadership with deep backend expertise—especially in Java—demonstrated by significant contributions to high-profile open-source projects like CloudEvents, Knative, Keycloak and APNs libraries. Matthias focuses on reliable messaging, Kafka integrations, and CloudEvents support, often improving robustness, serialization, and deployment docs while also contributing to build/release and DevOps workflows. Colleagues know him for pragmatic refactors that reduce technical debt and for attention to edge cases (e.g., payload sizing and stream handling) that prevent production issues. Outside of work he’s equally serious about perfecting BBQ and IPA pairing, a sign of his blend of technical precision and hands-on curiosity.
21 years of coding experience
Stackoverflow
16reputation
1kreached
2answers
0questions
Github Skills (60)
json10
api-rest10
kubernetes10
authorizations10
apn10
ios10
messaging10
reactive10
apidoc10
restful-api10
api-design10
saml10
testing10
cloudevents10
oid10
Programming languages (21)
Github contributions (5)
aerogear/aerogear-unifiedpush-server
Apr 2013 - Jun 2018
:rocket: AeroGear UnifiedPush Server
Role in this project:
Back-end Developer
Back-end DeveloperContributions:27 releases, 1605 commits, 659 PRs in 5 years 2 months
Contributions summary:Matthias primarily worked on implementing and maintaining back-end features, specifically focusing on the UnifiedPush Server's functionalities. Their contributions included modifying API endpoints, refactoring code, and adding functionalities like setting the time to live (TTL) value for push messages. They also made changes to improve the overall reliability of message delivery, indicating a focus on the core functionality of the server. The user also took on testing and improving overall system reliability with some bug fixes.
wildflyapnspush-notificationsfcmaerogear
knative/eventing
Oct 2018 - Jan 2023
Event-driven application platform for Kubernetes
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:819 reviews, 243 commits, 397 PRs in 4 years 3 months
Contributions summary:Matthias primarily focused on back-end code modifications, including adjustments to Kafka configurations, and channel setup within the Knative eventing system. Their contributions also extended to the build and release process, as evidenced by changes to the `hack/release.sh` script. The changes involve modifications across the eventing platform, including modifications to Broker configurations.
eventingeventscloudeventsspecificationdeveloper-productivity
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