Freelancer profile translated to English.

Description

DevOps

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I plan, implement, and manage your Kubernetes cluster. I can perform both on-premise installations with Red Hat OpenShift or SUSE Rancher, as well as manage the clusters of common cloud providers (AKS, EKS, GCP). I support you with sizing, best practice configuration, and security hardening according to security standards. Furthermore, I can assist with setting up monitoring and connecting other DevOps tools such as Ansible, ArgoCD, Jenkins, or Gitlab. I develop Helm charts or support the creation of container images.

Software Development

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I am happy to assist with the development of ASP.NET MVC applications with Entity Framework. I can also develop corresponding applications for REST API interfaces based on the .NET Framework. Optimization and extension of existing software are also possible.

System Integration

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I am happy to assist with the planning, implementation, and operation of highly available environments. The focus is on Microsoft SQL Server clusters, which can be operated either on Windows Servers as Always On Failover Clusters or with Always On Availability Groups, or also with the help of Pacemaker as a cluster environment on Linux Servers. Furthermore, I can also configure SQL Server as a highly available instance on Kubernetes.

The implementation and operation of VMware ESXi or Microsoft Hyper-V are also possible. Furthermore, environments with Proxmox or KVM can also be set up and managed.

Industry field of expertise

Languages

German
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

Bundesdruckerei Gruppe GmbH
DevOps Engineer
DIGITAL AND IT
November 2022 - October 2025 (2 years and 11 months)
Berlin, Germany
The project involved setting up a disconnected private cloud environment for running AI workloads for various federal ministries. Technically, OpenShift clusters were provided for each tenant on Proxmox hypervisors. Installations were carried out using Terraform and Ansible, with further configuration via GitOps techniques with ArgoCD (Red Hat GitOps on OpenShift). Hashicorp Vault was used for PKI and securing secrets. The code was previously checked for functionality and compliance with coding guidelines by Gitlab pipelines.
OpenShift Argo CD Ansible Ansible Automation Platform Hashicorp Vault
IMM electronics GmbH
Team Lead IT
TECH
June 2022 - July 2023 (1 year and 1 month)
Mittweida, Germany
As Team Lead IT, I further developed the company's IT and drove modernization projects. This included migrating the Microsoft Exchange Server to Exchange Online and replacing Microsoft Office 2019 with Office 365. I also introduced a monitoring system based on CheckMK, replacing the outdated Nagios system. An asset management system with iTop was also introduced, and initial automations based on this data were initiated.
VMware vSphere Windows Server Linux C# CheckMK
ASPICON GmbH
Team Lead Microsoft Services & Support / Linux System Engineer
DIGITAL AND IT
March 2016 - April 2022 (6 years and 2 months)
Chemnitz, Germany