Dennis Oelkers
Frontend Architect at Graylog, Inc.
Berlin, Germany
Summary
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Rockstar🎓
Top SchoolDennis Oelkers is a Frontend Architect based in Berlin with 15 years of engineering experience, currently shaping frontend architecture and best practices at Graylog where he progressed from the company's second developer to leading teams. He combines hands-on backend and frontend skills—contributing to Graylog’s ES7 storage drivers and frontend scaling—alongside practical ops experience from years as a freelance operations engineer. At Graylog he organizes the search feature team and has a history of improving developer experience through documentation and tooling, including contributions to widely used projects like Graylog documentation and the CLA Assistant. Known for pragmatic problem-solving, he bridges architecture, implementation and docs to help teams ship reliable logging and search systems at scale. Trained in Computer Science at TU Berlin, Dennis brings a mix of systems thinking and product-focused execution that often surfaces in performance and indexing optimizations.
15 years of coding experience
11 years of employment as a software developer
Computer Science, Computer Science at Technische Universität Berlin
German, English
Github Skills (24)
back-end-development10
sphinx10
amazon-elasticsearch10
testing10
github-integration10
java10
javas10
elasticsearchquery10
aws-elasticsearch10
elasticsearch10
nodejs10
backend10
documentation10
elasticsearch-api10
data-storage9
Programming languages (8)
Github contributions (5)
Graylog2/graylog2-server
Oct 2010 - Jan 2023
Free and open log management
Role in this project:
Backend Developer
Backend DeveloperContributions:3827 reviews, 4764 commits, 5590 PRs in 12 years 5 months
Contributions summary:Dennis primarily contributed to the development of the Elasticsearch 7 (ES7) storage driver. They implemented components such as `CountsAdapter`, `MessagesAdapter`, and `ClusterAdapter` for ES7, showing a strong focus on integrating Graylog with the new version. These efforts included writing code for testing, handling large payloads, ensuring error handling, and addressing performance issues related to indexing.
log-viewerloggingloggersecure-loggingsyslog
Graylog2/documentation
Apr 2015 - Nov 2020
Role in this project:Technical Writer
Technical WriterContributions:16 reviews, 56 commits, 64 PRs in 5 years 7 months
Contributions summary:Dennis's contributions primarily involve updating and expanding the documentation for the Graylog project. They fixed typos, clarified existing explanations, added information about web interface configuration, plugin development, and Elasticsearch setup. The user also restructured documentation sections and addressed various issues related to the documentation's organization and content.
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