René Kerner
Senior Software Engineer at IBM
Dusseldorf, North Rhine-Westphalia, Germany
Summary
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Rockstar🎓
Top SchoolRené Kerner is a Senior Software Engineer with 13 years of experience specializing in change data capture, distributed systems, and middleware, currently working on Debezium sink connectors at IBM after a multi-year tenure leading Debezium efforts at Red Hat. He brings deep backend expertise in Java and Kotlin, proven by substantive contributions to the high-profile debezium project—implementing primary key update handling across multiple connectors and hardening event semantics for MySQL, PostgreSQL, and MongoDB. René has a strong track record of shipping production-ready connector frameworks, UI integrations, and operator tooling for cloud-native platforms like OpenShift. Comfortable across languages from C/C++ and PHP to JavaScript and HTML/CSS, he pairs pragmatic system design with solid testing practices. Based in Düsseldorf, he combines open-source public speaking with hands-on engineering, often bridging core protocol changes with real-world connector implementations.
13 years of coding experience
12 years of employment as a software developer
Bachelor of Science - BS, Computer Science, Bachelor of Science - BS, Computer Science at Hochschule Niederrhein
Stackoverflow
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Github Skills (11)
debezium10
javas10
change-data-capture10
kafka-connect10
cdc10
apache-kafka10
postgresql10
mongodb10
mysql10
java10
mongodb-database10
Programming languages (12)
Github contributions (5)
debezium/debezium
Nov 2019 - Apr 2022
Change data capture for a variety of databases. Please log issues at https://issues.redhat.com/browse/DBZ.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:525 reviews, 54 commits, 86 PRs in 2 years 6 months
Contributions summary:René's commits primarily focus on implementing features related to primary key update events and related headers within the Debezium core and MySQL, PostgreSQL, and MongoDB connectors. This involves adding headers for primary key updates to reference the original key, ensuring correct event emission for these types of updates, and modifying the source code to incorporate these changes. The user also made multiple code changes in multiple connectors, and tests to ensure the correct behavior of primary key updates.
kafka-connectapache-kafkadata-capturedatabasekafka-producer
bf2fc6cc711aee1a0c2a/cos-fleet-catalog-debezium
Feb 2022 - Apr 2023
Implementation of the Managed Connector Catalog API for Debezium.
Contributions:75 reviews, 23 PRs, 31 pushes in 1 year 2 months
apidebeziumconnectorapi-catalogcatalog
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