Björn Ohlrich - IT Freelancer

Q: Where is Björn based?

Björn is based in Mittweida, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Björn speak?

Björn speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Björn have?

Björn has at least 21 years of experience. During this time, Björn has worked in at least 10 different roles and for 10 different companies . The average length of individual experience is 2 years and 11 months . Note that Björn may not have shared all experience and actually has more experience.

Q: What is Björn's latest experience?

Björn's most recent position is IT Freelancer at Self-employed .

Q: What companies has Björn worked for in recent years?

In recent years, Björn has worked for Self-employed , Bundesdruckerei GmbH , DB InfraGo AG , IMM electronics GmbH , and ASPICON GmbH .

Q: Which industries is Björn most experienced in?

Björn is most experienced in industries like Information Technology , Aerospace and Defense , and Manufacturing . Björn also has some experience in Education .

Q: Which business areas is Björn most experienced in?

Björn is most experienced in business areas like Information Technology , Operations , and Project Management . Björn also has some experience in Human Resources .

Q: Which industries has Björn worked in recently?

Björn has recently worked in industries like Information Technology and Manufacturing .

Q: Which business areas has Björn worked in recently?

Björn has recently worked in business areas like Information Technology , Operations , and Project Management .

Recommended expert

Mittweida, Germany

Experience

Nov 2022 - Present

3 years 5 months

IT Freelancer

Self-employed

Projects in Azure and Google Cloud
Azure DevOps
Google GKE and Azure AKS
Workload Identity Federation
Creation of all resources with Terraform and Ansible
Available for projects in DevOps, Kubernetes, Rancher and OpenShift
High-availability database solutions with Microsoft SQL Server

Nov 2022 - Oct 2025

3 years

DevOps Engineer

Bundesdruckerei GmbH

Greenfield project: 20+ OpenShift multi-cluster solution for multiple tenants and tenant cluster management
Air-gapped installation with Artifactory as source, fill via GitLab pipeline and oc-mirror
Design, setup and maintenance of Red Hat OpenStack for running OpenShift clusters
Design, setup and maintenance of OpenShift 4.16 clusters with OpenShift Virtualization on bare metal using Ansible
Design, setup and maintenance of OpenShift 4.16 clusters on Proxmox with Ansible and ArgoCD (OpenShift GitOps)
Design, setup and maintenance of OpenShift Data Foundation in external mode with a separate Ceph cluster
Design, setup and maintenance of OpenShift Data Foundation with internal disks and encryption using HashiCorp Vault as KMS
Design, setup and maintenance of Cert Manager with HashiCorp Vault as issuer
Configuration of Vault Secret Operator for Kubernetes secrets
Design, setup and maintenance of secret management with HashiCorp Vault Enterprise
Configuration of LDAP as auth provider for OpenShift
Support and improvement of linting and test pipelines for Ansible playbook and role GitLab repositories
Design, setup and maintenance of the Ansible Automation Platform in the management OpenShift cluster for tenant cluster management
Configuration of OpenShift AI and NVIDIA GPU Operator
Creation, management and optimization of OpenShift resources under virtual network infrastructure
Implementation of zero-trust networks with Red Hat OpenShift 4
Design, setup and maintenance of observability with Grafana Enterprise and Prometheus
Design, setup and maintenance of a DDI solution with BlueCat

Nov 2022 - Mar 2025

2 years 5 months

DevOps Engineer

DB InfraGo AG

Configuration of Red Hat Enterprise Linux servers 8 & 9 with Ansible (Postfix, Nginx, SSSD)
Ansible role for issuing and deploying certificates from a Windows Server CA and an AWS PCA

Jun 2022 - Jul 2023

1 year 2 months

IT Team Lead

IMM electronics GmbH

Responsible for company-wide IT
Project responsibility for the ERP system (proAlpha) and related processes
Management, update and maintenance of the entire IT infrastructure
Planning of cloud migrations to Office 365 and other applications in Azure Cloud
Preparation for ISO 27001 audit
Introduction of a monitoring system based on CheckMK and migration from Nagios

Mar 2016 - May 2022

6 years 3 months

Head of IT System Administration, Kubernetes and DevOps Lead, and Team Lead Microsoft Services & Support

ASPICON GmbH

Planning and implementation of Kubernetes, OpenShift and Rancher projects at customer sites
Development and rollout of automation solutions based on Ansible
Configuration of application and user security with LDAP, SAML2 and OIDC
Maintenance and enhancement of monitoring checks for Kubernetes and SQL Server in CheckMK
Lead Microsoft and Kubernetes teams for customer projects (3–4 employees)
Lead system administrators for internal systems (2 employees)
Establishment of revenue-relevant consulting and service department for SQL Server services, including processes and structures
Revamp and optimization of internal IT department with ITIL-aligned processes
Support of management in preparation for ISO 27001 certification
Project responsibility for introduction of a comprehensive DevOps and configuration management tool based on Puppet
Project responsibility for introduction of an ITSM tool and related IT processes aligned to ITIL standard
Migration of Zimbra environment to Microsoft Exchange Server 2016
Project responsibility for introduction of a VDI environment based on VMware Horizon with Windows and Linux clients (RHEL)
Implementation of infrastructure projects at customers (VMware vSphere 6.5, Veeam, Microsoft Server environments)
Implementation of Microsoft SQL Server projects at customers (health checks, performance analysis, setup of AlwaysOn Availability Group clusters)

Feb 2013 - Feb 2016

3 years 1 month

Mittweida, Germany

Head of System Administration

IMM Holding GmbH

Led system administration in a two-person team
Responsible for the entire printing system (Ricoh)
Implemented, installed, and configured a server monitoring system (Nagios)
Led the project to introduce a ticket system
Administered systems: VMware vSphere 5 environment, Dell servers and storage, Nexenta storage, Windows Server 2012
Created documentation for the IT infrastructure
Participated in projects to connect new sites in Mittweida

Aug 2009 - Jan 2013

3 years 6 months

Senior System Administrator

Omniga GmbH & Co. KG

Department head of IT administration with budget responsibility
Technical leadership of 4 full-time administrators and 2 apprentices
Responsible for training apprentices in specialist IT system integration
Strong involvement in recruitment of IT administrators and apprentices for system integration
General IT infrastructure planning and project responsibility for infrastructure of new products
Introduction and consolidation of ITIL-compliant processes (incident, problem and change management)
Planning and implementation of migration to virtual environments
Member of internal talent management program
Responsibility for various IT security projects (IDS, penetration tests, vulnerability scanning, defense in depth)
Management of online products in collocations (external data centers): planning and operation of high-availability online products, NetApp storage systems, VMware ESX, KEMP load balancer, Debian Linux, KVM, MSSQL 2008R2 high availability, ASP.NET in IIS web farm
Management of internal IT: MS SharePoint Server 2010 installation, configuration, maintenance, IT asset management, introduction of OTRS ticket system

Apr 2007 - Aug 2009

2 years 5 months

Regensburg, Germany

Manager System Administration

Smilingbits GmbH & Co. KG

Responsible for training apprentices in specialist IT system integration
Management of online products in co-locations (external data centers)

Jul 2005 - Feb 2007

1 year 8 months

IT Administrator

Bundeswehr

IT administrator of 3./FjgBtl 451

Apr 2005 - Jun 2005

3 months

Basic military service

Bundeswehr

Aug 2004 - Mar 2005

8 months

Technician at the University Computing Center

Chemnitz University of Technology

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Aerospace and Defense, Manufacturing, and Education.

Information Technology

Aerospace and Defense

Manufacturing

Education

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Operations, Project Management, and Human Resources.

Information Technology

Operations

Project Management

Human Resources

Languages

German

Native

English

Advanced

Education

Aug 2001 - Jul 2004

Chemnitz University of Technology

Vocational training and diploma as IT Specialist in System Integration · IT Specialist in System Integration · Chemnitz, Germany

Sep 1995 - Jul 2001

Bernhard-Schmidt-Schule

Secondary School Certificate · Mittweida, Germany

Sep 1991 - Jul 1995

Primary School

Mittweida, Germany

Certifications & licenses

Red Hat Certified Engineer

Red Hat Certified System Administrator

Certified Kubernetes Administrator

Microsoft Certified Solutions Associate

Microsoft Certified Solutions Expert

Microsoft Certified Solutions Associate

Statistics

Experience

Total positions 11

Experience in Information Technology 18.5 y

Avg length 2 y 5 m

Longest experience 6 y 2 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles IT Freelancer, DevOps Engineer, IT Team Lead

Main industries Information Technology, Aerospace and Defense, Manufacturing

Main business areas Information Technology, Operations, Project Management

Qualifications

Certifications earned 6

Profile

Created

September 2025

Last Update

December 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Björn based?

Björn is based in Mittweida, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Björn speak?

Björn speaks the following languages: German (Native), English (Advanced).

How many years of experience does Björn have?

Björn has at least 21 years of experience. During this time, Björn has worked in at least 10 different roles and for 10 different companies. The average length of individual experience is 2 years and 11 months. Note that Björn may not have shared all experience and actually has more experience.

What roles would Björn be best suited for?

Based on recent experience, Björn would be well-suited for roles such as: IT Freelancer, DevOps Engineer, IT Team Lead.

What is Björn's latest experience?

Björn's most recent position is IT Freelancer at Self-employed.

What companies has Björn worked for in recent years?

In recent years, Björn has worked for Self-employed, Bundesdruckerei GmbH, DB InfraGo AG, IMM electronics GmbH, and ASPICON GmbH.

Which industries is Björn most experienced in?

Björn is most experienced in industries like Information Technology, Aerospace and Defense, and Manufacturing. Björn also has some experience in Education.

Which business areas is Björn most experienced in?

Björn is most experienced in business areas like Information Technology, Operations, and Project Management. Björn also has some experience in Human Resources.

Which industries has Björn worked in recently?

Björn has recently worked in industries like Information Technology and Manufacturing.

Which business areas has Björn worked in recently?

Björn has recently worked in business areas like Information Technology, Operations, and Project Management.

What is Björn's education?

Björn attended Chemnitz University of Technology for IT Specialist in System Integration.

Does Björn have any certificates?

Björn has 6 certificates. Among them, these include: Red Hat Certified Engineer, Red Hat Certified System Administrator, and Certified Kubernetes Administrator.

What is the availability of Björn?

Björn is immediately available full-time for suitable projects.

What is the rate of Björn?

Björn's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.