Norbert Kalmár
Cloud Engineer at KX
Budapest, Hungary
Summary
🤩
Rockstar🎓
Top SchoolNorbert Kalmár is a cloud engineer based in Budapest with over a decade of experience building resilient, distributed systems and cloud-native infrastructure. He has strong Java and Python roots from early J2EE roles through large financial and data platforms, and now focuses on Azure, Kubernetes and storage orchestration (AKS, Bicep, rook-ceph) while shipping automation and CLI tooling for operational tasks. At Cloudera he worked on coordination and data-engineering components and is an active contributor to Apache ZooKeeper, where he improved core functionality, Java 8 migration and observability—evidence of deep systems-level expertise. Known for pragmatic problem solving, he blends hands-on coding with infrastructure design and has implemented auto-fix monitoring for tricky corner cases in production.
11 years of coding experience
11 years of employment as a software developer
BSc, Software Information Technology, BSc, Software Information Technology at Eötvös Loránd University
English, Hungarian, German
Github Skills (12)
javas10
configuration-management10
distributed-systems10
java10
testing9
databases8
database8
buildr7
apache7
performance-monitoring7
build-engine7
build-tools7
Programming languages (2)
Github contributions (5)
apache/zookeeper
Apr 2018 - Apr 2021
Apache ZooKeeper
Role in this project:
Back-end Developer
Back-end DeveloperContributions:41 reviews, 120 commits, 131 PRs in 3 years
Contributions summary:Norbert primarily contributed to the Apache ZooKeeper project by implementing and improving core functionalities. Their work included upgrading the project to Java 8, adding metrics for performance monitoring (fsyncs), and defining exit codes in an enum for better error handling. The user also addressed configuration issues, such as aborting startup on invalid ports and moved directories for Maven migration. Furthermore, they fixed random instance usages, and worked on some API documentation.
apache-zookeeperzookeeperdatabasejavaapache
nkalmar/hbase
May 2019 - Dec 2021
Mirror of Apache HBase
Contributions:22 pushes, 3 branches in 2 years 7 months
apache-hbasesqlapachedatastreamjava
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