Eyal Koren
Principal Software Engineer at Elastic
Israel
Summary
🤩
Rockstar🎓
Top SchoolEyal Koren is a Principal Software Engineer based in Israel with a decade of experience architecting and leading high-performance Java server and agent components. He has driven large-scale architectural changes that improved memory and CPU efficiency dramatically, introduced REST and big-data–style scaling at enterprise products, and now shapes observability tooling at Elastic. His open-source contributions to prominent projects like Elasticsearch and the Elastic APM Java agent show deep expertise in JVM internals, bytecode instrumentation, tracing, and ingest pipeline/template work. Comfortable moving between hands-on backend code, DevOps integration, and product-driven design, he pairs technical leadership with a multidisciplinary background that includes biotechnology studies, an uncommon perspective for systems engineers.
7 years of coding experience
13 years of employment as a software developer
Computer Science, Computer Science at Technion - Israel Institute of TechnologyMaster of Science - MS Biotechnology, Master of Science - MS Biotechnology at The Hebrew University of JerusalemBachelor of Science - BS Biotechnology, Bachelor of Science - BS Biotechnology at Tel-Hai College
English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (25)
data-pipelines10
tracer10
amazon-elasticsearch10
http10
instrumentation10
java10
apm10
javas10
elasticsearchquery10
go10
aws-elasticsearch10
pipe10
pipeline10
elasticsearch10
data-pipeline10
Programming languages (11)
Github contributions (5)
elastic/apm-agent-java
Aug 2018 - Jan 2023
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 releases, 741 reviews, 455 commits in 4 years 6 months
Contributions summary:Eyal primarily contributed to the core functionality of the Elastic APM Java agent, focusing on tracing HTTP requests and interacting with various components. This is evident from the changes involving enhancements to HTTP span handling and interaction with Redis. The user also worked on JDBC instrumentation and added support for different features.
agentapmelasticjava-agenttracing
elastic/apm-server
Aug 2020 - Sep 2022
Role in this project:Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:77 reviews, 22 commits, 15 PRs in 2 years
Contributions summary:Eyal primarily contributed to backend functionalities, including configurations for Elasticsearch clients and the Java attacher integration. They refactored code to accommodate custom headers and proxy settings for Elasticsearch clients. Additionally, the user worked on Java agent attacher, implementing JVM discovery and user-based execution of the attacher, enhancing the project's monitoring capabilities. These contributions show a focus on improving APM server's integration with other systems and its ability to monitor Java applications.
performance-monitoringapmdevopserror-monitoringperformance-metrics
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