Projekt‐ & Berufserfahrung
11/2021 – offenTätigkeitsbeschreibung
Taking the customer's IT infrastructure to the next level. May include traces of terabyte-scale PostgreSQL databases on Heroku.Eingesetzte Qualifikationen
Amazon Web Services (AWS), PaaS (Platform as a Service), PostgreSQL
9/2021 – 10/2021Tätigkeitsbeschreibung
Maturity assessment of software delivery processes.Eingesetzte Qualifikationen
Continuous Delivery (CDE), Git, Testing (IT)
5/2021 – 10/2021Tätigkeitsbeschreibung
Forming a dedicated platform team from scratch, assessment of process maturity, implementing foundational work organization elements and domain best practices.Eingesetzte Qualifikationen
Ansible, Docker, Dokumentation (IT), KVM (Kernel-based Virtual Machine), Projektleitung / Teamleitung (IT)
2/2021 – 4/2021Tätigkeitsbeschreibung
Automating OpenStack operations in a multi-cluster environment.Eingesetzte Qualifikationen
11/2020 – 2/2021Tätigkeitsbeschreibung
Improving the reliability and performance of the IT infrastructure.Eingesetzte Qualifikationen
Container Management, elasticSearch, Linux (Kernel)
9/2020 – 10/2020Tätigkeitsbeschreibung
End-to-end designing and prototyping a web application to gather user feedback.Eingesetzte Qualifikationen
Architektur (allg.), Git, Perl, Testautomatisierung
5/2020 – 5/2020Tätigkeitsbeschreibung
Designing the IT infrastructure of the customer to be optimized for business continuity through zero-downtime upgrades.Eingesetzte Qualifikationen
KVM (Kernel-based Virtual Machine), Linux (Kernel), Storage
8/2017 – 4/2020Tätigkeitsbeschreibung
I helped inovex GmbH to open a new revenue stream while reducing IT infrastructure costs.
On the technological level it means a heavily integrated, turnkey solution to roll out OpenStack installations from scratch, complete from bootstrapping on bare metal, through fully-automated provisioning, to deploying log analytics, monitoring and metrics collection with a single push of a button.
I also helped to enable the company's customers to gain new IT capabilites through automation of datacenter operations. It means building an inventory based on NetBox, provisioning VMware virtual machines with Terraform, and automating deployment with Ansible. All those elements are also integrated together with GitLab CI pipelines for continuous integration and delivery for infrastructure.
Linux (Kernel), Cloud (allg.), Systems Engineering, Ansible, Puppet
8/2014 – 7/2017Tätigkeitsbeschreibung
My first job was to introduce infrastructure automation from scratch, using Rex in a Gentoo-only bare metal environment. It is powering a billion dollar business by now.
My responsibilities also involved to design and build a high performance ELK stack (processing 300k+ events per second, with total data size over 1 PB), and to maintain and scale high performance monitoring systems (Graphite+Grafana for a similar workload).
I also kickstarted weekly "Friday talks" as an internal knowledge sharing platform, maintained the company's tech blog, organized meetup events, and gave talks about some parts of the technology stack at various conferences.
Linux (Kernel), Systems Engineering
I'm also a free/libre/open source software activist contributing to various projects, and organizing Open Source Contribution meetups regularly. I offer consulting, training and sponsored development services for the (R)?ex automation framework as a core developer.
I'm an autodidact, who enjoys learning new things out of curiosity. I'm honored to be a teacher sometimes, but I always consider myself as a student. From time to time, you can find me speaking at different conferences and workshops. I have a few posts published on my personal blog, on big-elephants.com, and on perlmaven.com, but most of the content I create are documentation for various projects.