2026 · Siemens Energy
Role: Automation and Migration Specialist
Automated build-out of multiple Proxmox/Ceph HCI clusters in the enterprise segment, automated migration of Linux and Windows workloads from VMware vSphere to Proxmox VE, automated provisioning of HA, backup and monitoring roles.
Topics: Linux (Red Hat, Ubuntu), Windows Server, Proxmox VE, Ceph, VMware vSphere, vSAN, Cisco, Entra ID, Microsoft 365, Ansible, Terraform, Artifactory, Prometheus, Graylog, GitLab CI/CD
2025–2026 · Comdesk GmbH
Role: Automation and Kubernetes Specialist
Build-out of cloud colocations, design and deployment of multiple Proxmox/Ceph clusters in external data centres, automated build-out of Kubernetes clusters (IaC), GitOps workflows, security policies, monitoring and logging.
Topics: Linux (Red Hat, Ubuntu), Proxmox VE, Ceph, Rancher, Kubernetes, RKE2, GitLab, ArgoCD, Ansible, Helm, Fortigate, HPE Aruba, Entra ID, Microsoft 365, Checkmk, Prometheus, Grafana, Loki, BSI baseline protection
2025–2026 · ABB AG
Role: Automation Specialist
Design, build-out and operation of automation pipelines for heterogeneous virtual server infrastructures and applications.
Topics: Red Hat, Windows Server, Azure, VMware, Azure GitOps, ArgoCD, Terraform, Ansible, AWX, Entra ID, Microsoft 365, Veeam
2025 · D.Live GmbH & Co. KG
Role: IT Systems Engineer (Virtualisation)
Build-out of a cloud colocation, design and deployment of a Proxmox/Ceph cluster, migration from VMware vSphere to Proxmox VE 9, deployment of a Veeam backup system (local, immutable, cloud).
Topics: Windows Server, Linux (SUSE, Ubuntu), Docker, VMware vSphere/ESXi, Proxmox VE, Ceph, NetApp, Checkmk, PRTG, Fortigate, Fortimail, Cisco ISE, Entra ID, Microsoft 365, Veeam, ITIL, ISO 27001
2025 · D.Live GmbH & Co. KG
Role: Director IT
Building an IT department from the ground up with a hands-on mentality. Architecture for new data centres, development of IT service processes based on ITIL, introduction of IT asset management.
Topics: Windows Server, Linux (SUSE, Ubuntu), VMware vSphere/ESXi, Proxmox, Checkmk, Fortigate, FortiEMS, Cisco ISE, Entra ID, Microsoft 365, Veeam, ITIL, ISO 27001
2023–2024 · Federal Office of Administration (BVA, Germany)
Role: DevOps and Cloud Engineer (Digitalisation)
Advisory on migrating departmental applications to container-based cloud platforms. Migrations to Kubernetes/OpenShift via Helm, Argo CD and GitLab CI. Infrastructure automation, Linux system administration, configuration management.
Topics: OpenShift, Red Hat (RHEL), Kubernetes, Docker, Argo CD, GitLab, Ansible, Terraform, Helm, Vault, Grafana/Prometheus/Loki, BSI baseline protection
2022–2023 · Deutsche Telekom MMS GmbH
Role: DevOps and Cloud Engineer, Blockchain
Building and extending automation pipelines for validators across various blockchain networks. Migration to Kubernetes via Helm and GitLab CI. Infrastructure automation, Linux system administration, configuration management.
Topics: Red Hat, Kubernetes, Docker, VMware vSphere/NSX-T, Aria, KVM, S3, Ceph, GitLab, AWS, Open Telekom Cloud, Ansible, Terraform, Helm, Vault, Keycloak, Grafana/Prometheus/Loki, BSI baseline protection
2022 · Thalia Bücher GmbH
Role: DevOps Engineer, Kubernetes
Building and extending automation pipelines for in-house Java web applications. Migration to Tanzu/Kubernetes, infrastructure automation, Linux system administration.
Topics: SUSE, Kubernetes, VMware vSphere/Tanzu, Aria, KVM, Veeam, S3, Ceph, GitLab, AWS, Ansible, Terraform, Helm, Vault, Grafana/Prometheus/Loki/Graylog, BSI baseline protection
2022 · Schenck Process AG
Role: DevOps and Cloud Engineer, Embedded Linux
Building and extending automation pipelines for embedded Linux systems based on Yocto Linux. Infrastructure automation, Linux system administration, configuration management.
Topics: Yocto Linux, Red Hat Enterprise Linux, Kubernetes, Docker, KVM, Ceph, GitLab, Azure, Ansible, Terraform, Helm, Vault, Grafana/Prometheus/Loki, BSI baseline protection
2020–2022 · Univention GmbH / Dataport AöR
Role: Linux System Engineer (Sovereign Cloud Stack, DevOps)
Building and extending automation with GitLab CI, Terraform and Ansible for modules of Project Phoenix at Dataport — the cloud-based open-source workplace for the public sector. Infrastructure automation, Linux system administration, configuration management.
Topics: Debian, RHEL, Univention Corporate Server, Kubernetes, Docker, VMware vSphere, KVM, Proxmox, Artifactory, S3, Ceph, GitLab, Terraform, Helm, Vault, Keycloak, Grafana/Prometheus/Loki, BSI baseline protection
1992–2019 · ASWO International Service GmbH
Building up the IT department, later Head of IT Infrastructure
Over 25 years of technical and personnel responsibility within an international wholesale and foreign-trade company. Independently built the IT department from scratch, set up international site networking, migrated all European subsidiaries onto a shared Active Directory, virtualised the infrastructure, built out redundant data centres, carried through open-source migrations (Office, AD, server workloads), pipelines for in-house B2B web applications.
Topics: IBM iSeries, Windows Server, Linux (Debian, Ubuntu, Red Hat, SUSE), Univention Corporate Server, Apache/Tomcat, MySQL/Percona, MS SQL Server, DB2, VMware vSphere, Proxmox, Ceph, NetApp, IBM DS Storage, Cisco, Fortigate, Checkpoint, Java, Python, Bash
For more detailed project descriptions or a full CV, please get in touch — you’ll find my contact details under Contact.