Observability Engineer

• Apr 2023 - Present

Site Reliability Engineer

• Apr 2021 - Feb 2023

• Part of Backend team; later split off to dedicated SRE team. • Migrating legacy Prometheus setup to a new, consolidated setup using Thanos, aggregating all metrics from multiple Kubernetes clusters. • Setting up a brand new tracing stack using Grafana Tempo. • Developing a new backup strategy using a custom agent written in Go, and leveraging GCP Pub/Sub, AWS SQS and Aliyun MNS. • Managing multiple production Kubernetes clusters consisting of 100+ nodes each and running 100’s of tenants across Google Cloud Platform and Aliyun. Show less

Cloud Platform Engineer (Consultant)

• Jul 2020 - Apr 2021

• Part of a newly created team aimed at migrating parts of their product from OpenStack based to Kubernetes based.• Maintaining a custom orchestration tool and rewriting it to use Terraform in the backend.• Developing an API and GUI for said orchestration tool to simplify use by operators, using Python and Angular.• Developing Highly Available deployment strategies for tools like Keycloak, PostgreSQL, etcd and their in‑house built software on Kubernetes.• Developing a base infrastructure monitoring layer running on Kubernetes to be deployed onto every customer platform using Prometheus,Grafana and Loki.• Maintaining development Kubernetes clusters on AWS EKS.• Providing support for other development and customer service teams for Prometheus, Kubernetes, AWS and OpenStack. Show less

Platform and Topology Engineer (Consultant)

• Oct 2019 - Jun 2020

• Developing build pipelines to fully automate building, orchestrating and testing a product consisting of 100’s of CentOS virtual machines, usingPuppet, OpenStack, Packer and Jenkins.• Maintaining a custom orchestration tool• Developing an API and GUI for said orchestration tool to simplify use by operators, using Python and Angular.

Open Source Consultant

• Jul 2018 - Apr 2021

• Daily Operations managing ±700 CentOS virtual machines using Puppet, Icinga, Prometheus and ELK stack.• On Call rotation during nights and weekends• Comparing Single Sign‑on solutions (SAML + OpenID Connect)• Deploying Keycloak using Puppet• Orchestrating and provisioning virtual machines using KVM/libvirt, Puppet and Jenkins pipelines.• Migrating Puppet 3 setup to Puppet 5• Migrating Icinga 1.x setup to Icinga 2• Investigating Kubernetes and Nomad, as well as monitoring (Prometheus) and CI/CD (Gitlab, Concourse CI) for a new production stack• Consulting work for customers Show less

Intern

• Feb 2018 - Jun 2018

Platform and Topology Engineer (Consultant)

• Oct 2018 - Sep 2019

• Developing build pipelines to fully automate building, orchestrating and testing a product consisting of 100’s of CentOS virtual machines, using Puppet, OpenStack, Packer and Jenkins. • Maintaining a custom orchestration tool • Developing an API and GUI for said orchestration tool to simplify use by operators, using Python and Angular. • Developing build pipelines to fully automate building, orchestrating and testing a product consisting of 100’s of CentOS virtual machines, using Puppet, OpenStack, Packer and Jenkins. • Maintaining a custom orchestration tool • Developing an API and GUI for said orchestration tool to simplify use by operators, using Python and Angular.

Logistics (Student Job)

• Jun 2015 - Oct 2017

Web Developer (Student Job)

• Jul 2013 - Sep 2013

Rewriting a mobile webapplication and admin interface for creating mobile surveys. My job mainly involved work on the backend (php), design and implementation of the database (MySQL) and implementation of the mobile app using backbone.js. Rewriting a mobile webapplication and admin interface for creating mobile surveys. My job mainly involved work on the backend (php), design and implementation of the database (MySQL) and implementation of the mobile app using backbone.js.

Software Developer (Student Job)

• Aug 2009 - Sep 2011

Updating and maintenance of a document management system, setting up a sharepoint server for intranet usage, building a web service and native windows client using WPF Updating and maintenance of a document management system, setting up a sharepoint server for intranet usage, building a web service and native windows client using WPF