Theo Chatzimichos
Site Reliability Engineer at Elastic
Madrid, Community of Madrid, Spain
Summary
🤩
Rockstar🎓
Top SchoolTheo Chatzimichos is a Site Reliability Engineer with 13 years of experience designing and operating cloud-native, distributed systems and platform automation. He has led teams and built tested, documented Infrastructure-as-Code toolchains using Terraform, GitOps, and CI/CD (CircleCI, GitLab CI), migrating services to containers and Kubernetes at scale. A long-time FOSS contributor and former openSUSE infrastructure lead, he blends hands-on sysadmin skills (databases, networking, clustering) with developer-grade practices like testsuites and streamlined pipelines. His work on the popular voxpupuli/puppet-r10k project highlights a focus on practical, cross-platform automation and improved observability for deployments. Based in Madrid, he now applies this expertise to reliability and platform challenges at Elastic, combining operational rigor with a taste for pragmatic open-source solutions.
13 years of coding experience
13 years of employment as a software developer
Bachelor's degree Computer Science and Telecommunications, Bachelor's degree Computer Science and Telecommunications at Technological Educational Institute of Thessaly. / TEI of Thessaly
English, Greek, German, Czech, Spanish
Github Skills (10)
puppeteer10
devops10
puppet10
webhooks10
systemd9
bash8
suse8
opensuse8
ruby7
git4
Programming languages (16)
Github contributions (5)
voxpupuli/puppet-r10k
Feb 2015 - May 2015
Setup and configure r10k for use with git based environments in puppet
Role in this project:
DevOps Engineer
DevOps EngineerContributions:12 commits, 11 PRs, 7 comments in 3 months
Contributions summary:Theo primarily focused on enhancing the r10k module's functionality and integration with various operating systems and deployment strategies. They made improvements to the webhook service, including adding support for different init systems (Systemd, SUSE init), and optimizing its configuration. The user also refactored the webhook configuration to improve flexibility and maintainability, while also streamlining the r10k deployment process. Furthermore, they enhanced the logging of the r10k deployment command for improved debugging and CI job reporting.
r10kpuppetlinux-puppet-moduleconfigureenvironments
tampakrap/puppet-facter
Jan 2015 - Oct 2017
Contributions:4 releases, 61 commits, 7 PRs in 2 years 8 months
factsfacter
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.