Ioannis Canellos
Head Of Software Engineering at The Apache Software Foundation
Greece
Summary
🤩
Rockstar🎓
Top SchoolIoannis Canellos is a seasoned software engineering leader with ~15 years of experience building developer-facing cloud-native tooling and frameworks, currently serving as Head of Software Engineering. He has a long track record at Red Hat and the Apache Software Foundation, creating widely used projects such as the Fabric8 Kubernetes client and Spring Cloud Kubernetes, and contributing to flagship efforts like Quarkus and Jenkins Kubernetes plugin. Ioannis blends deep Java, Kubernetes/OpenShift and DevOps expertise with a passion for developer experience—he builds tools that build tools and often surfaces integrations that make platform adoption frictionless. A prolific open-source committer and mentor, he has shaped OSS governance and developer workflows across Karaf, Curator, jclouds and more. Based in Greece, he pairs technical leadership with community-building and unusual extracurricular focus—Brazilian Jiu-Jitsu and guitar—that inform his disciplined, collaborative approach.
15 years of coding experience
17 years of employment as a software developer
Bachelor Computer Science, Bachelor Computer Science at University of Ioannina
Greek, English, German
Stackoverflow
570reputation
53kreached
33answers
0questions
Github Skills (68)
web-application10
testing10
microservices-application10
zookeeper10
javas10
junit10
ci-cd-pipeline10
jtest10
maven10
karaf10
microservices10
cloud-native10
javascript10
kubernetes-operator10
dockers10
Programming languages (20)
Github contributions (5)
jclouds/legacy-jclouds
Nov 2011 - Apr 2013
Role in this project:
Back-end Developer
Back-end DeveloperContributions:47 commits in 1 year 4 months
Contributions summary:Ioannis primarily contributed to the core functionality of the jclouds library, focusing on improving its internal workings. They implemented checks for malfunctioning JCE providers and created a utility for loading classes, providing a fallback mechanism. Further contributions included modifications related to OSGi integration, specifically enhancing provider and API discovery within the OSGi environment and adding listener interfaces. They also added a name property to the Context class for more distinct context identification.
apache/curator
Jul 2013 - Apr 2015
Apache Curator
Role in this project:Back-end Developer
Back-end DeveloperContributions:35 commits, 1 PR, 3 comments in 1 year 9 months
Contributions summary:Ioannis primarily contributed to the Apache Curator project by implementing and modifying core functionalities, specifically related to Zookeeper client utilities and recipes. They added a `PathUtils` class and OSGi metadata to curator artifacts. Additionally, the user added support for recursive deletes and introduced a CloseableExecutorService flag. Other contributions included DSL for ZooKeeper's config and reconfig methods.
zookeeperconsensusapache-curatorapachebig-data
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