krmnn / openhr20

clone of openhr20.svn.sourceforge.net

Hi there 👋

My name is Thomas Karmann and I am a systems engineer, currently living in Berlin, Germany.

In the early 2000s I started to get involved with Linux and after school I studied computer science at FAU, majoring in operating systems, computer architecture and virtualization, while working as a system administrator for the CS department. After graduating I started working in the IT industry doing:

• 🧯 IT Operations and Site Reliability Engineering
• ⚙️ Systems engineering for Linux and UNIX datacenter environments
• ☁️ Cloud engineering for AWS environments

I currently work for @idealo on observability topics.

My skillset covers multiple domains:

• Platform Engineering and Infrastructure as Code

  • Fluid in all major configuration systems and IaC ecosystems like CFEngine, Ansible, Puppet, Terraform, HCL, AWS CDK, Helm, kustomize, boto
  • From building IaC libraries and templates to fully managed platforms
  • Kubernetes (bare-metal, Rancher, EKS) architecture, configuration and optimization, building integrations
  • Code and Deployment Pipelines using GitLab, GitHub, Jenkins
  • Testing and validating infrastructure components using assertions, snapshot- and integration tests with AWS CDK and terratest

• Observability Engineering (Monitoring, Logging, Alerting)

  • Prometheus, Prometheus Federations, VictoriaMetrics and Grafana for scraping, aggregating, storing and visualizing large amounts of system and application metrics in distributed systems
  • Logstash, Vector and Elasticsearch/Opensearch for collecting, aggregating, storing, querying and visualizing large amounts of system- and application logs in distributed systems
  • Nagios, Icinga, Munin for legacy environments

• Softwaredevelopment using C/C++, Python, Java and Typescript

  • For ISPs building large-scale provisioning flows for CPEs and routers using CWMP/TR-69 and SSH/netmiko
  • For IXPs building monitoring components like prometheus exporters
  • For Webshops using Zope, Flask, FastAPI, Nodejs, Typescript

If I touch computers in my free time I am busy with:

• Creating and recording music using DAWs, instruments and controllers (soundcloud)
• Learning to build DSP and audio software, plugins
• DIY projects, home automation, microcontrollers