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IT-Generalist mit den Schwerpunkten Administration, Infrastruktur, Security, Monitoring, Support
Aktualisiert am 05.05.2026
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Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 18.05.2026
Verfügbar zu: 100%
davon vor Ort: 100%
Top-Skills
Administration
IT-Security
IT-Infrastruktur
Monitoringsysteme
Linux
Server
Firewall
Netzwerk
Nagios
ITIL
Virtualisierung
Datenbanken
Support
SQL
Sophos
Cisco
Microsoft
Scrum
Issue Tracking System
VMware
VLAN
Hochverfügbarkeit
Sprachen
German
Native
English
Fluent
French
Basic
Spanish
Basic
Italian
Basic
Mehr anzeigen
Weniger anzeigen
Einsatzorte
Einsatzorte
Länder
Deutschland, Schweiz
Remote-Arbeit
möglich
Projekte
Projekte
2 Jahre 7 Monate
2023-10 - heute
Systemrelaunch im Verteidigungsumfeld
Network-, System- und Security-Engineer
Nagios
rsyslog
syslog-ng
...
Rolle
Network-, System- und Security-Engineer
Projektinhalte
Monitoring (Nagios)
Logging (rsyslog, syslog-ng)
Firewalls (Sophos XGS, genua, SINA)
Switches (Aruba, Cisco)
HP-Servers (Linux, Hardening, SELinux)
Virtualization (HyperV, VMWare vSphere, Docker)
Kenntnisse
Nagios
rsyslog
syslog-ng
Sophos XGS
genua
SINA
Aruba
Cisco
Linux
Hardening
SELinux
HyperV
VMWare vSphere
Docker
2 Jahre 4 Monate
2021-06 - 2023-09
System- and Application-Administration
Administrator
Pinger
Icinga
Jira
...
Rolle
Administrator
Projektinhalte
Monitoring (Pinger, Icinga)
3rd level support (Jira, Confluence, Omnitracker)
MS- and RHEL/SLES Linux servers (IIS, Apache, Tomcat, nginx)
Virtualization (VMWare, OpenShift, Docker)
Automatization (Kubernetes, Ansible, Bitbucket, RH Satellite, UC4)
HA Systems
on-call duty
Kenntnisse
Pinger
Icinga
Jira
Confluence
Omnitracker
IIS
Apache
Tomcat
nginx
MS
Oracle
PostgreSQL
Mongo Databases
MS-AD
M365
Exchange
VMWare
OpenShift
Docker
Kubernetes
Ansible
Bitbucket
RH Satellite
UC4
1 Jahr
2020-07 - 2021-06
System and Network Administration / Project Management
PRTG
Nagios
Veeam
...
Projektinhalte
Nox Nachtexpress
Monitoring (PRTG, Nagios)
Backup (Veeam)
MS and RHEL/SLES/Debian Linux Server (AD, Exchange, Support, LVM)
Database Administration (Oracle 12 and 19, MySQL, PostgreSQL, Mongo)
MS Azure / Exchange online / Teams Administration
Project: Migration to M365
Windows 7 and 10 Clients
Virtualization (HyperV, VMWare vSphere, Docker)
Kenntnisse
PRTG
Nagios
Veeam
AD
Exchange
LVM
Oracle 12
Oracle 19
MySQL
PostgreSQL
Mongo
MS Azure
Exchange online
Teams
M365
Windows 7
Windows 10
HyperV
VMWare vSphere
Docker
Einsatzort
Mannheim
8 Monate
2019-08 - 2020-03
HW-Rollout
Teamlead / Project Manager
MS Project
PXE
SCCM
...
Rolle
Teamlead / Project Manager
Projektinhalte
Coordinating and leading the HW-deployment of 2.500 systems (MS Project)
Provisioning notebooks and PCs (PXE, SCCM)
Floorwalking, user-support (MS Project, Helpdesk)
Kenntnisse
MS Project
PXE
SCCM
Helpdesk
Kunde
DELL / MEAG / MunichRe
Einsatzort
München, Hamburg, Düsseldorf
2 Jahre 7 Monate
2017-01 - 2019-07
Rollouts HW and SW, floorwalking, user-support
Freelance Consultant, Project Manager
Server 2008
Server 2012
Server 2016
...
Rolle
Freelance Consultant, Project Manager
Projektinhalte
Windows-Administration (Server 2008/2012/2016/2019 including AD and IAM)
Linux- Administration (Updates / user-/ rights management, Debian / RHEL, AIX)
HA systems (HACMP) Monitoring (with Nagios, Icinga, PRTG)
Network security and MPLS replacement by SD-WAN (Sophos, Cato networks) Database-administration (MariaDB, MySQL, Oracle, PostgreSQL)
Virtualization (HyperV, VMWare vSphere, Docker)
Backup solutions (NetApp, Veeam, Acronis)
Installation and administration of cloud-solutions (AWS, Azure, Nextcloud)
Automation by scripting (AutoIT, Bash, VBA) and UC4 / Automic
Kenntnisse
Server 2008
Server 2012
Server 2016
Server 2019
AD
IAM
Debian
RHEL
AIX
HACMP
Nagios
Icinga
PRTG
Sophos
Cato networks
MariaDB
MySQL
Oracle
PostgreSQL
HyperV
VMWare vSphere
Docker
NetApp
Veeam
Acronis
AWS
Azure
Nextcloud
AutoIT
Bash
VBA
UC4
Automic
Kunde
several companies and banks
Einsatzort
Frankfurt, Mannheim, Karlsruhe
3 Jahre 4 Monate
2013-09 - 2016-12
SW-rollouts
Project Manager / Product Owner
Jira
Confluence
MS Project
...
Rolle
Project Manager / Product Owner
Projektinhalte
SW-rollouts (Jira, Confluence, MS Project; team of 40 developers)
Support (2nd und 3rd Level; Ticketing via OTRS and Helpdesk)
Change-Management and rollout of proprietary software (600 users)
Administration Windows-Server 2012 (including AD und user-/ rights management)
Administration Linux-Server (Suse, Debian, AIX, RHEL Updates / user-/ rights management HACMP) Monitoring (Nagios) Installation and administration of Oracle DBs (RAC) (1.800 users)
Installation and administration of OwnClouds/NextClouds (1.800 Users) Virtualization (with VMWare vSphere and HyperV, NetApp)
Automation by scripting (AutoIT, Bash, VBA) and UC4
VPN and MPLS to subsidiaries via Astaro / Sophos UTM
Kenntnisse
Jira
Confluence
MS Project
OTRS
Helpdesk
Windows-Server 2012
AD
Suse
Debian
AIX
RHEL
HACMP
Nagios
Oracle DBs
RAC
OwnClouds
NextClouds
VMWare vSphere
HyperV
NetApp
AutoIT
Bash
VBA
UC4
VPN
MPLS
Astaro
Sophos UTM
Kunde
Messe Frankfurt
Einsatzort
Frankfurt, Stuttgart, Paris, Hong Kong
2 Jahre 4 Monate
2011-05 - 2013-08
Projectmanagement SW-development
External Head of IT
VMWare vSphere
VMWare Workstation
Windows-server
...
Rolle
External Head of IT
Projektinhalte
Projectmanagement SW-development (mixed german/chinese team)
Virtualization with VMWare vSphere and VMWare Workstation
Installation and administration of Windows- and Linux-servers
Installation and administration of Oracle Databases
Automation by scripting (Bash, VBA)
Support (1st, 2nd und 3rd Level; Ticketing via OTRS) Network Security and VPN via Astaro UTM
Monitoring via Nagios
Kenntnisse
VMWare vSphere
VMWare Workstation
Windows-server
Linux-server
Oracle Databases
Bash
VBA
OTRS
VPN
Astaro UTM
Nagios
Kunde
system house
Einsatzort
Hassloch, Frankfurt, Paris, Beijing
5 Jahre 6 Monate
2006-01 - 2011-06
Projectmanagement rollouts of Hard- and Software
Freelance Consultant
Linux-Servers
Oracle-DBs
Bash
...
Rolle
Freelance Consultant
Projektinhalte
Projectmanagement rollouts of Hard- and Software, floorwalking
Installation and operation of Linux-Servers, Oracle-DBs and networks
Automation by scripting (Bash, VBA)
Monitoring via Nagios
Network Security via Astaro UTM
Kenntnisse
Linux-Servers
Oracle-DBs
Bash
VBA
Nagios
Astaro UTM
Einsatzort
Frankfurt, Mannheim, Bad Dürkheim
6 Jahre 6 Monate
1999-06 - 2005-11
Installation and operation of MS SQL - Databases
External Head of IT
Rolle
External Head of IT
Projektinhalte
Administration of Windows- and Linux--Servers
Design and programming of SQL-queries and tools
Automation with scripting languages
Design, installation and operation of computer networks
Monitoring via Nagios
Network Security via Astaro UTM
Selection, procurement and operation of Hard- and Software
Kunde
Callcenter
Einsatzort
Bruchsal
6 Jahre 2 Monate
1993-05 - 1999-06
Design and operation of computer networks
Freelance Consultant, Project manager
Nagios
Rolle
Freelance Consultant, Project manager
Projektinhalte
Architect and administrator Server/Client ? Systems
Monitoring via Nagios
Selection, procurement and operation of Hard- and Software
Kenntnisse
Nagios
Kunde
several Start-Ups, Spinoffs from the University of Heidelberg
Einsatzort
Heidelberg
3 Jahre 5 Monate
1990-01 - 1993-05
1st, 2nd und 3rd-level support HW and SW
Research Associate
Rolle
Research Associate
Projektinhalte
SW-Development
HW Deployment
Design, installation and operation of computer networks
Kunde
Hospital Data Processing Center of the University of Heidelberg
Einsatzort
Heidelberg
Mehr
Weniger
Aus- und Weiterbildung
Aus- und Weiterbildung
1994
Chemistry Degree
Heidelberg
Certificates
Certified Scrum Master PSM
Certified Scrum Product Owner PSPO
AWS Cloud Practitioner
ITSiBe / CISO
ITIL4
further education (online)
Scrum
MS Azure
AWS Security
Sophos
VSphere 7.0
Kompetenzen
Kompetenzen
Top-Skills
Administration
IT-Security
IT-Infrastruktur
Monitoringsysteme
Linux
Server
Firewall
Netzwerk
Nagios
ITIL
Virtualisierung
Datenbanken
Support
SQL
Sophos
Cisco
Microsoft
Scrum
Issue Tracking System
VMware
VLAN
Hochverfügbarkeit
Produkte / Standards / Erfahrungen / Methoden
Profile
Information Technology Professional who works well independently and in groups
Creative problem solver with a hands-on mentality flourishing in high-paced environments
Natural leader who focuses on team-coaching and -development and a structured working method
Analytical thinker who believes in testing and measuring rather than guessing and assuming
A customer-focused professional, who believes, that end users should be treated like a valuable asset
Einsatzorte
Einsatzorte
Länder
Deutschland, Schweiz
Remote-Arbeit
möglich
Projekte
Projekte
2 Jahre 7 Monate
2023-10 - heute
Systemrelaunch im Verteidigungsumfeld
Network-, System- und Security-Engineer
Nagios
rsyslog
syslog-ng
...
Rolle
Network-, System- und Security-Engineer
Projektinhalte
Monitoring (Nagios)
Logging (rsyslog, syslog-ng)
Firewalls (Sophos XGS, genua, SINA)
Switches (Aruba, Cisco)
HP-Servers (Linux, Hardening, SELinux)
Virtualization (HyperV, VMWare vSphere, Docker)
Kenntnisse
Nagios
rsyslog
syslog-ng
Sophos XGS
genua
SINA
Aruba
Cisco
Linux
Hardening
SELinux
HyperV
VMWare vSphere
Docker
2 Jahre 4 Monate
2021-06 - 2023-09
System- and Application-Administration
Administrator
Pinger
Icinga
Jira
...
Rolle
Administrator
Projektinhalte
Monitoring (Pinger, Icinga)
3rd level support (Jira, Confluence, Omnitracker)
MS- and RHEL/SLES Linux servers (IIS, Apache, Tomcat, nginx)
Virtualization (VMWare, OpenShift, Docker)
Automatization (Kubernetes, Ansible, Bitbucket, RH Satellite, UC4)
HA Systems
on-call duty
Kenntnisse
Pinger
Icinga
Jira
Confluence
Omnitracker
IIS
Apache
Tomcat
nginx
MS
Oracle
PostgreSQL
Mongo Databases
MS-AD
M365
Exchange
VMWare
OpenShift
Docker
Kubernetes
Ansible
Bitbucket
RH Satellite
UC4
1 Jahr
2020-07 - 2021-06
System and Network Administration / Project Management
PRTG
Nagios
Veeam
...
Projektinhalte
Nox Nachtexpress
Monitoring (PRTG, Nagios)
Backup (Veeam)
MS and RHEL/SLES/Debian Linux Server (AD, Exchange, Support, LVM)
Database Administration (Oracle 12 and 19, MySQL, PostgreSQL, Mongo)
MS Azure / Exchange online / Teams Administration
Project: Migration to M365
Windows 7 and 10 Clients
Virtualization (HyperV, VMWare vSphere, Docker)
Kenntnisse
PRTG
Nagios
Veeam
AD
Exchange
LVM
Oracle 12
Oracle 19
MySQL
PostgreSQL
Mongo
MS Azure
Exchange online
Teams
M365
Windows 7
Windows 10
HyperV
VMWare vSphere
Docker
Einsatzort
Mannheim
8 Monate
2019-08 - 2020-03
HW-Rollout
Teamlead / Project Manager
MS Project
PXE
SCCM
...
Rolle
Teamlead / Project Manager
Projektinhalte
Coordinating and leading the HW-deployment of 2.500 systems (MS Project)
Provisioning notebooks and PCs (PXE, SCCM)
Floorwalking, user-support (MS Project, Helpdesk)
Kenntnisse
MS Project
PXE
SCCM
Helpdesk
Kunde
DELL / MEAG / MunichRe
Einsatzort
München, Hamburg, Düsseldorf
2 Jahre 7 Monate
2017-01 - 2019-07
Rollouts HW and SW, floorwalking, user-support
Freelance Consultant, Project Manager
Server 2008
Server 2012
Server 2016
...
Rolle
Freelance Consultant, Project Manager
Projektinhalte
Windows-Administration (Server 2008/2012/2016/2019 including AD and IAM)
Linux- Administration (Updates / user-/ rights management, Debian / RHEL, AIX)
HA systems (HACMP) Monitoring (with Nagios, Icinga, PRTG)
Network security and MPLS replacement by SD-WAN (Sophos, Cato networks) Database-administration (MariaDB, MySQL, Oracle, PostgreSQL)
Virtualization (HyperV, VMWare vSphere, Docker)
Backup solutions (NetApp, Veeam, Acronis)
Installation and administration of cloud-solutions (AWS, Azure, Nextcloud)
Automation by scripting (AutoIT, Bash, VBA) and UC4 / Automic
Kenntnisse
Server 2008
Server 2012
Server 2016
Server 2019
AD
IAM
Debian
RHEL
AIX
HACMP
Nagios
Icinga
PRTG
Sophos
Cato networks
MariaDB
MySQL
Oracle
PostgreSQL
HyperV
VMWare vSphere
Docker
NetApp
Veeam
Acronis
AWS
Azure
Nextcloud
AutoIT
Bash
VBA
UC4
Automic
Kunde
several companies and banks
Einsatzort
Frankfurt, Mannheim, Karlsruhe
3 Jahre 4 Monate
2013-09 - 2016-12
SW-rollouts
Project Manager / Product Owner
Jira
Confluence
MS Project
...
Rolle
Project Manager / Product Owner
Projektinhalte
SW-rollouts (Jira, Confluence, MS Project; team of 40 developers)
Support (2nd und 3rd Level; Ticketing via OTRS and Helpdesk)
Change-Management and rollout of proprietary software (600 users)
Administration Windows-Server 2012 (including AD und user-/ rights management)
Administration Linux-Server (Suse, Debian, AIX, RHEL Updates / user-/ rights management HACMP) Monitoring (Nagios) Installation and administration of Oracle DBs (RAC) (1.800 users)
Installation and administration of OwnClouds/NextClouds (1.800 Users) Virtualization (with VMWare vSphere and HyperV, NetApp)
Automation by scripting (AutoIT, Bash, VBA) and UC4
VPN and MPLS to subsidiaries via Astaro / Sophos UTM
Kenntnisse
Jira
Confluence
MS Project
OTRS
Helpdesk
Windows-Server 2012
AD
Suse
Debian
AIX
RHEL
HACMP
Nagios
Oracle DBs
RAC
OwnClouds
NextClouds
VMWare vSphere
HyperV
NetApp
AutoIT
Bash
VBA
UC4
VPN
MPLS
Astaro
Sophos UTM
Kunde
Messe Frankfurt
Einsatzort
Frankfurt, Stuttgart, Paris, Hong Kong
2 Jahre 4 Monate
2011-05 - 2013-08
Projectmanagement SW-development
External Head of IT
VMWare vSphere
VMWare Workstation
Windows-server
...
Rolle
External Head of IT
Projektinhalte
Projectmanagement SW-development (mixed german/chinese team)
Virtualization with VMWare vSphere and VMWare Workstation
Installation and administration of Windows- and Linux-servers
Installation and administration of Oracle Databases
Automation by scripting (Bash, VBA)
Support (1st, 2nd und 3rd Level; Ticketing via OTRS) Network Security and VPN via Astaro UTM
Monitoring via Nagios
Kenntnisse
VMWare vSphere
VMWare Workstation
Windows-server
Linux-server
Oracle Databases
Bash
VBA
OTRS
VPN
Astaro UTM
Nagios
Kunde
system house
Einsatzort
Hassloch, Frankfurt, Paris, Beijing
5 Jahre 6 Monate
2006-01 - 2011-06
Projectmanagement rollouts of Hard- and Software
Freelance Consultant
Linux-Servers
Oracle-DBs
Bash
...
Rolle
Freelance Consultant
Projektinhalte
Projectmanagement rollouts of Hard- and Software, floorwalking
Installation and operation of Linux-Servers, Oracle-DBs and networks
Automation by scripting (Bash, VBA)
Monitoring via Nagios
Network Security via Astaro UTM
Kenntnisse
Linux-Servers
Oracle-DBs
Bash
VBA
Nagios
Astaro UTM
Einsatzort
Frankfurt, Mannheim, Bad Dürkheim
6 Jahre 6 Monate
1999-06 - 2005-11
Installation and operation of MS SQL - Databases
External Head of IT
Rolle
External Head of IT
Projektinhalte
Administration of Windows- and Linux--Servers
Design and programming of SQL-queries and tools
Automation with scripting languages
Design, installation and operation of computer networks
Monitoring via Nagios
Network Security via Astaro UTM
Selection, procurement and operation of Hard- and Software
Kunde
Callcenter
Einsatzort
Bruchsal
6 Jahre 2 Monate
1993-05 - 1999-06
Design and operation of computer networks
Freelance Consultant, Project manager
Nagios
Rolle
Freelance Consultant, Project manager
Projektinhalte
Architect and administrator Server/Client ? Systems
Monitoring via Nagios
Selection, procurement and operation of Hard- and Software
Kenntnisse
Nagios
Kunde
several Start-Ups, Spinoffs from the University of Heidelberg
Einsatzort
Heidelberg
3 Jahre 5 Monate
1990-01 - 1993-05
1st, 2nd und 3rd-level support HW and SW
Research Associate
Rolle
Research Associate
Projektinhalte
SW-Development
HW Deployment
Design, installation and operation of computer networks
Kunde
Hospital Data Processing Center of the University of Heidelberg
Einsatzort
Heidelberg
Mehr
Weniger
Aus- und Weiterbildung
Aus- und Weiterbildung
1994
Chemistry Degree
Heidelberg
Certificates
Certified Scrum Master PSM
Certified Scrum Product Owner PSPO
AWS Cloud Practitioner
ITSiBe / CISO
ITIL4
further education (online)
Scrum
MS Azure
AWS Security
Sophos
VSphere 7.0
Kompetenzen
Kompetenzen
Top-Skills
Administration
IT-Security
IT-Infrastruktur
Monitoringsysteme
Linux
Server
Firewall
Netzwerk
Nagios
ITIL
Virtualisierung
Datenbanken
Support
SQL
Sophos
Cisco
Microsoft
Scrum
Issue Tracking System
VMware
VLAN
Hochverfügbarkeit
Produkte / Standards / Erfahrungen / Methoden
Profile
Information Technology Professional who works well independently and in groups
Creative problem solver with a hands-on mentality flourishing in high-paced environments
Natural leader who focuses on team-coaching and -development and a structured working method
Analytical thinker who believes in testing and measuring rather than guessing and assuming
A customer-focused professional, who believes, that end users should be treated like a valuable asset
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