Jörg K. - Consultant Windows/Linux - Strengthening Cybersecurity

Q: Where is Jörg based?

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

Q: What languages does Jörg speak?

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

Q: How many years of experience does Jörg have?

Jörg has at least 33 years of experience. During this time, Jörg has worked in at least 20 different roles . The average length of individual experience is 2 years and 8 months . Note that Jörg may not have shared all experience and actually has more experience.

Q: What is Jörg's latest experience?

Jörg's most recent position is Consultant Windows/Linux - Strengthening Cybersecurity .

Q: Which industries is Jörg most experienced in?

Jörg is most experienced in industries like Information Technology , Government and Administration , and Telecommunication . Jörg also has some experience in Aerospace and Defense , Insurance , and Media and Entertainment .

Q: Which business areas is Jörg most experienced in?

Jörg is most experienced in business areas like Information Technology , Operations , and Project Management . Jörg also has some experience in Customer Service and Product Development .

Q: Which industries has Jörg worked in recently?

Jörg has recently worked in industries like Government and Administration , Information Technology , and Banking and Finance .

Q: Which business areas has Jörg worked in recently?

Jörg has recently worked in business areas like Information Technology , Operations , and Customer Service .

Q: What is Jörg's education?

Jörg attended High School for none .

Recommended expert

Siegsdorf, Germany

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Experience

Dec 2023 - Present

2 years 8 months

Consultant Windows/Linux - Strengthening Cybersecurity

Worked on projects aimed at improving the customer's IT infrastructure against current security threats.
Windows Server (from 2008)
Linux servers (mainly Ubuntu LTS)
PKI
VMware / vSphere
Red Hat Ansible
checkmk

Aug 2022 - Nov 2023

1 year 4 months

Linux Application Manager - Support for SMART PaaS Application Management for the data center of the Raiffeisen Banking Group

Worked in PaaS application management
Linux Red Hat 7/8 (update/upgrade)
Red Hat OpenShift (container management)
Apache Tomcat (installation and update/upgrade)
UrbanCode Deploy (UCD)
Ansible
Atlassian Jira
General application management The project mainly involved maintaining the Linux infrastructure (Red Hat) based on Red Hat OpenShift and standardized virtual machines. This included applying patches and updates as well as troubleshooting issues. This was done natively on Linux via the command line as well as using UrbanCode Deploy. Ansible was used for installation and configuration management of containers and VMs. Outdated Tomcat and Jira installations in development and production environments were manually upgraded to current versions. Work was managed via Jira tickets, prioritized and handled independently. Regular releases of critical business software took place in defined maintenance windows, sometimes in the evenings, at night, and on weekends.

May 2021 - Oct 2021

6 months

Consulting System Monitoring with Icinga2

Consulting and implementation of system monitoring with satellites in distributed networks
Linux (Ubuntu, Debian)
Windows Server
Windows 10
Icinga2 with various extensions
Graphite
Grafana

Apr 2021 - Jun 2022

1 year 3 months

Subproject Lead User Support/Rollout within the ALUS Project

Piloting and rollout of the final system for programming digital pagers (ALUS – Alerting Update System) in the BOS/TETRA network in Bavaria for nPOL
CA Service Desk Manager (ticket system)
Standard software tools (Office, etc.) During the introduction of digital pagers, the rollout of the software solution was organized and coordinated. This included preparing on-site training for users in Bavaria as well as creating and updating materials (manuals, etc.).

Jun 2020 - Dec 2020

7 months

Monitoring Consulting

Overhaul (migration) and expansion of an existing monitoring with Icinga2
Ubuntu 18.04
Icinga2
Icingaweb2
Grafana
Graphite

Jul 2019 - Apr 2021

1 year 10 months

Subproject Lead for Design / Testing / Setup of a Digital Pager Programming System for

Design, testing and setup of a digital pager programming system for nPOL services in Bavaria
Development of a custom protocol for Over-the-Air (OTA) programming
Management and coordination of developers and setting up technical requirements for OTA controls
Windows 10
Windows Server 2016, 2019
Linux (Ubuntu)
Icinga2 (including Graphite, Grafana, Nagvis)
VMware ESXi and ESX; vSphere
GitHub Server
Sepura FRT (fixed-mount radios)

Jul 2017 - Jun 2019

2 years

Subproject Lead for Service and Rollout in Bavaria's Digital Radio

Deployment of the final device programming system in Bavaria (>30 sites)
Setup of infrastructure monitoring for the central nPOL Digital Radio programming system
Windows 10
Windows Server 2008 R2, 2012 R2, 2016
Linux (Ubuntu, Debian etc.)
Icinga2 (including Graphite, Grafana, PNP, Nagvis)
VMware ESXi and ESX from 5.5; vSphere
Sepura Radio Manager from 2.3x
Motorola ITM from V6.02
Migration of virtual servers from the interim system to the final system
GitHub Server
Linux Shell and Windows PowerShell scripting

Sep 2015 - Dec 2020

5 years 4 months

Consulting and Implementation of Monitoring for Authorized Body Bavaria

Designing and setting up system monitoring based on Nagios / Icinga2
Linux (Ubuntu, Debian etc.)
Icinga2 (including Graphite, Grafana, PNP, Nagvis)
Windows Server 2019 including WSL

Dec 2013 - Jun 2019

5 years 7 months

Technical Project Lead Linux/Windows for Bavaria's Digital Radio

Implementation of a decentralized interim update solution (device programming) for public safety digital radio (BOS) in Bavaria
Development of system monitoring based on Icinga2 for Authorized Body Bavaria
Contribution to the development of a final central system via VPN
Windows 7, 8.1, 10
Windows Server 2008 R2, 2012 R2, 2016
SCCM
Linux (Ubuntu, Debian etc.)
Icinga2 and OMD (including Graphite, Grafana, PNP, Nagvis)
VMware ESXi and ESX from 5.5; vSphere
Sepura Radio Manager from 2.3x
Motorola ITM from V6.02
Linux Shell and Windows PowerShell scripting

Jul 2013 - Sep 2013

3 months

Monitoring Consulting (Nagios)

Adapting monitoring to specific requirements in Microsoft AD
Optimization of Nagios checks related to MS AD
Various adjustments in visualization (NagVis) and workflow
Microsoft Windows AD
Windows Server from 2003
Linux (Ubuntu, Debian etc.)
Nagios (OMD) including various plugins
PowerShell and Bash scripting
PHP
Documentation

Mar 2013 - Jul 2013

5 months

System support with a focus on Windows servers and VMware

General administration and installation of Windows Servers (2003-2012) and migration of physical machines to a virtual environment
Management of the VMware environment and running VMs
Distribution of hotfixes
Troubleshooting issues
Creation and customization of virtual machines according to customer requirements
Migration of virtual machines to newer ESX versions
Live migration of VMs within NetApp storage
Documentation
Windows Server 2003-2012
VMware ESX, vSphere, VMware Web Client
NetApp
Symantec NetBackup

Oct 2012 - Dec 2012

3 months

Upgrade of Nagios/Icinga monitoring and system administration of data center operations

Preparation of version upgrades and expansion of existing monitoring
Administration of data center operations
Nagios / Icinga (OMD) and various plug-ins
Linux (Debian / Ubuntu)
Windows Server 2003-2008 R2
Shell scripting
PowerShell
VMware ESX (vSphere etc.)
KVM (virtualization)

Jul 2012 - Sep 2012

3 months

Administration of web services

Administration of internal web servers on Windows (IIS) and Linux (Apache, Tomcat)
Windows Server 2003-2008 R2
Linux (Debian, SUSE)
IIS
Apache
Tomcat
Nagios
Shell scripting
PowerShell

Aug 2011 - Apr 2012

9 months

Consulting and setup of a monitoring project ('self-service' monitoring)

Development of a self-service monitoring tool based on Nagios/Icinga
Linux (Debian)
Nagios / Icinga and various plug-ins
Shell scripting
Windows (servers from 2003), clients from XP
SNMP
VPN, OpenVPN
Firewalling with iptables
Project management with JIRA
Citrix XenServer 5.x
JasperReports Server
Tomcat and GlassFish as development tools

Jun 2011 - Sep 2011

4 months

Upgrade of Enteo Netinstall V6.x to DSM 7

Upgrade of the Frontrange Enteo 6.x environment to DSM 7
Setup of Windows patch management with WSUS
Windows Server 2008 R2
Windows SQL Server
Frontrange Enteo Netinstall 6.x
Frontrange DSM 7.x
Microsoft WSUS Server
Microsoft Windows XP, 7
Microsoft MSI

Jul 2008 - Dec 2010

2 years 6 months

System administration of the existing environment and later migration

System administration of the environment and planning/implementation of migrations
Windows Server 2000–2008 R2
Windows XP–7
Microsoft SQL Server
Microsoft WSUS
Microsoft Exchange (2003, 2007, 2010)
Lotus Domino and Notes
Linux (Debian, RedHat, CentOS, SUSE)
Samba

Oct 2005 - Jul 2007

1 year 10 months

System integration and administration

Building and administration of the infrastructure (servers and render farm) for up to 150 employees in the film project 'Lissi und der Wilde Kaiser'
Linux (SUSE, RedHat, Debian)
Database and file servers on SLES 9.x
VMWare Server
Windows 2000, XP
Samba as an AD DC server

Nov 2004 - Oct 2005

1 year

Hardware assembly for storage (SAN/FC)

Setting up several SAN/FC storage systems for:
Leibniz Computing Center Munich
GFS Munich
Max Planck Institute for Plasma Physics
Max Planck Institute of Biochemistry Martinsried / Munich

Apr 1998 - Aug 2004

6 years 5 months

System administration of internal systems

System administration and user support for internal systems
Microsoft Server NT–2003
Windows 95–XP
Terminal Server NT / MetaFrame - 2003
Novell NetWare 3.x / 4.x
Linux (Debian)
AIX 4.3.3–5.2
Monitoring with Netsaint / Nagios
Trend Micro SMB / Interscan VirusWall
Windows Update Server
Checkpoint firewalling
Tivoli TSM backup
Microsoft Office from 95

Jan 1991 - Dec 1998

8 years

Self-employed IT service provider

Mostly small IT projects in office environments (networks). Windows / Linux / Monitoring

Industry Experience

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

Experienced in Information Technology, Government and Administration, Telecommunication, Aerospace and Defense, Insurance, and Media and Entertainment.

Information Technology

Government and Administration

Telecommunication

Aerospace and Defense

Insurance

Media and Entertainment

Business Area Experience

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

Experienced in Information Technology, Operations, Project Management, Customer Service, and Product Development.

Information Technology

Operations

Project Management

Customer Service

Product Development

Summary

I have had professional IT experience since 1991 (with computers in general since 1982). After several years as an employed system engineer at an IT system integrator, I have been a full-time freelancer/self-employed since 2004.

I have extensive knowledge in Windows (from Windows 3.1 onward) and Linux (in recent years focusing on Debian and Ubuntu and derivatives, but also Red Hat, CentOS, and to a lesser extent SLES). In various data centers, I mainly set up server and client infrastructure and provided user support as needed. I also gained a lot of experience in various tools (e.g., ticket systems) and procedures (e.g., ITIL) of modern IT.

Other focus areas are monitoring (including visualizations; since 1999) of system environments mostly with Nagios, checkmk and Icinga (1 and 2), as well as virtualization (various vendors and solutions – including VMware, Proxmox). I really enjoy working with alternative, possibly new, heterogeneous environments.

Skills

Public Service
Banking
It System Integrator
Film And Media
Healthcare
Insurance
Call Center
Software Development
It Consulting

Languages

German

Native

English

Advanced

Education

Aug 1978 - Jun 1988

High School

none

Certifications & licenses

Prince Foundation

Prince Practionier

Statistics

Experience

Total positions 20

Experience in Information Technology 12.5 y

Avg length 2 y 1 m

Longest experience 7 y 11 m

Expertise

Recent roles Consultant Windows/Linux - Strengthening Cybersecurity, Linux Application Manager - Support for SMART PaaS Application Management for the data center of the Raiffeisen Banking Group, Consulting System Monitoring with Icinga2

Main industries Information Technology, Government and Administration, Telecommunication

Main business areas Information Technology, Operations, Project Management

Qualifications

Certifications earned 2

Profile

Created

September 2023

Last Update

June 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Jörg based?

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

What languages does Jörg speak?

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

How many years of experience does Jörg have?

Jörg has at least 33 years of experience. During this time, Jörg has worked in at least 20 different roles. The average length of individual experience is 2 years and 8 months. Note that Jörg may not have shared all experience and actually has more experience.

What roles would Jörg be best suited for?

Based on recent experience, Jörg would be well-suited for roles such as: Consultant Windows/Linux - Strengthening Cybersecurity, Linux Application Manager - Support for SMART PaaS Application Management for the data center of the Raiffeisen Banking Group, Consulting System Monitoring with Icinga2.

What is Jörg's latest experience?

Jörg's most recent position is Consultant Windows/Linux - Strengthening Cybersecurity.

Which industries is Jörg most experienced in?

Jörg is most experienced in industries like Information Technology, Government and Administration, and Telecommunication. Jörg also has some experience in Aerospace and Defense, Insurance, and Media and Entertainment.

Which business areas is Jörg most experienced in?

Jörg is most experienced in business areas like Information Technology, Operations, and Project Management. Jörg also has some experience in Customer Service and Product Development.

Which industries has Jörg worked in recently?

Jörg has recently worked in industries like Government and Administration, Information Technology, and Banking and Finance.

Which business areas has Jörg worked in recently?

Jörg has recently worked in business areas like Information Technology, Operations, and Customer Service.

What is Jörg's education?

Jörg attended High School for none.

Does Jörg have any certificates?

Jörg has 2 certificates. These include: Prince Foundation and Prince Practionier.

What is the availability of Jörg?

Jörg is immediately available part-time for suitable projects.

What is the rate of Jörg?

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