Kay H. - Server Administrator

Go to Website

Wiesbaden, Germany

Experience

Jun 2025 - Dec 2025

7 months

Wiesbaden, Germany

Server Administrator

Wivertis GmbH

Daily business, ticket processing, permissions management

Jul 2024 - Oct 2024

4 months

Minden, Germany

Windows Client / Incident Specialist

Wago GmbH & CoKG

Vulnerability detection and remediation:
Identifying and fixing security gaps in the IT infrastructure.
Client maintenance and updates:
Ensuring all clients worldwide are up-to-date and secure.
Incident management:
Assessing, handling, and documenting security incidents.
Creating and maintaining security reports:
Developing detailed and clear reports on the security status.
User support:
Providing direct help with security issues and resolving them at the user level.
Patch management: Experience with patch management tools, especially Ivanti.
Windows knowledge: Expertise in Windows 10/11, vulnerability identification, and remediation.
Microsoft tools: Familiarity with Microsoft tools and platforms for vulnerability mitigation.
Dashboards and tools: Using dashboards and various security tools.

Jan 2024 - Mar 2024

3 months

Miesbach, Germany

Client Management

Telair International GmbH

Software distribution on 90 computers
Setting up deployment processes
Optimizing deployment processes
Installing computers
Building a structure for software distribution

Jun 2023 - Dec 2023

7 months

Gerlingen, Germany

IT Windows Server Architect

Cardif Service GmbH

Analysis of existing run operation processes and backup processes, considering IT security and performance
Designing and developing a potential target architecture
Identifying automation opportunities
Aligning parameter changes
Building the server architecture
Testing the server environment
Performance and security improvements
Test documentation and preparation of analysis results
Troubleshooting and debugging
System auditing and hardening
Documentation
Handover to operations

Oct 2022 - Feb 2023

5 months

Germany

Windows System Administrator

Elis Group Service GmbH

On-site migrations of new locations
Technical connection of sites to the company's Windows domain, server, user, and AD migration
On-site briefings and coordination with branch managers
Support and coordination for setting up Citrix workstations
Cabling and assistance in setting up or modifying antennas
Management, configuration, and administration of Windows domain, clients, and printers

May 2022 - Aug 2022

4 months

Wiesbaden, Germany

Specialist for Operating Business Applications and Their Infrastructures

Hessian Center for Data Processing (HZD)

Provision and administration of business applications, both technical and functional
Administration of database systems
Application of incident, problem, change, and release management processes according to ITIL/ITSM
Creation and maintenance of technical and functional concepts, documentation, and operation manuals

May 2021 - Mar 2022

11 months

Technical Consultant Microsoft Evergreening

T-Systems International GmbH

Evergreening project test scenario
Upgrade / inplace update to Windows 10 20H2
Support for the service desk (1st level support) in Hungary

Mar 2021 - Aug 2021

6 months

Lead Client Engineer Rollout Project

T-Systems International GmbH

Coordination of taking over fat client management by T-Systems (provider change)
Test scenario and integration into the management system (Ivanti DSM)
Troubleshooting for pilot users
Handover to operations (service desk)

Mar 2020 - Oct 2020

8 months

Wiesbaden, Germany

Application Management / Packaging Coordination

Swiss IT Security Deutschland GmbH for Debeka

Coordination and organization of software products with product owners during a Windows 10 migration in an SCCM/Intune environment
Application management in software distribution
Team coordination
Process management
Application QA and test management
Software packaging
Windows 10

Dec 2018 - Jan 2020

1 year 2 months

Frankfurt, Germany

Windows 10 Rollout

DZ Bank AG

Packaging with Ivanti DSM
User support

Oct 2018 - Dec 2018

3 months

Frankfurt, Germany

Client Management

Cancom SE for DZ BANK AG

Handling incidents, problems, and changes
Performing system environment updates
Applying patches
Collaborating on concept development
Implementing according to concept; system support; conducting tests
Documentation and handing over programs
Creating effort estimates for the scope of work
Basic financial technology knowledge
Maintaining, tuning, and installing system hardware and software
Developing concepts
Managing external partners

Jul 2018 - Sep 2018

3 months

Heusenstamm, Germany

IT System Administrator - Windows / VMWare / Linux

ITSG GmbH

OS installations / servers
Migrating Windows Server 2008 and 2012 to Server 2016
VMWare and Hyper-V virtualization
Application migration, system configuration, infrastructure planning
Support for installing middleware components on Linux (TOMCAT, APACHE, JAVA, JBOSS / Wildfly)

May 2016 - Nov 2038

22 years 7 months

Lahnstein, Germany

Managing Director, Technology

ITCKH GmbH

Operation and further development of the technical infrastructure: VMWare, Microsoft Server, clients, cloud applications, MDM)

May 2016 - May 2018

2 years 1 month

Frankfurt, Germany

Operational Analyst

ING DiBa AG

Monitoring and handling events in IT systems
Performing and documenting regular system checks
Managing escalation processes during incidents
Resolving incidents
Acting as interface and providing support for incident, problem, and change management
Carrying out administrative tasks

Jul 2015 - Jan 2016

7 months

Hamburg, Germany

System Support and Operations Support

Berenberg Bank

Administration of MS Exchange 2010
Administration of MS Lync 2010
Administration of VOIP servers
Applying updates to end devices (BlackBerry, iOS, and Android)
User management for BlackBerry and AirWatch
Troubleshooting from end device through platform to server and network
Maintaining MDM solutions (BES5, BES12, and AirWatch)

Apr 2015 - Jun 2015

3 months

Stuttgart, Germany

Operational Analyst, Administrator

I|T|S|Care

Server monitoring in the data center control room
WSUS configuration and operation
VMware virtualization
Administration of Windows Server 2008, 2012

Jan 2015 - Mar 2015

3 months

Frankfurt, Germany

In-house Support / Administrator

Degussa Bank AG

Helpdesk (2nd level)
Client management (PCs + mobile devices)
Print server management (migration from Server 2008 to 2012)

Aug 2014 - Dec 2014

5 months

Frankfurt, Germany

Administrator, System Support

Degussa Bank GmbH

Helpdesk
Client management with SCCM, SCOM
Windows 7 rollout with arosoft

Mar 2014 - Jun 2014

4 months

Frankfurt, Germany

Executive Support

Deutsche Bank AG

Helpdesk for VIPs (1st and 2nd level)
MDM BlackBerry (BES5) and iOS with MobileIron
Client management
Windows 7 rollout

Jan 2014 - Mar 2014

3 months

Munich, Germany

Remote

Support Call-Agent / Remote Support

Fujitsu Services GmbH

Helpdesk for customer systems (2nd and 3rd level)
Client management with SCCM, SCOM
Windows 7 rollout

Oct 2013 - Dec 2013

3 months

Emsdetten, Germany

Administrator / Client Support

Dometic Waeco international GmbH

Helpdesk
Client management with Matrix42 Empirum V14
Windows server administration (Server 2008 and 2012)/Lotus Domino (8 and 8.5) on VMWare ESXi
Print server and printer management (Windows Server 2008R2)
File server management (Server 2008R2) + DFS
Win7 rollout

Jun 2013 - Jun 2013

1 month

Mainz, Germany

Speaker

Steuerberaterkammer Rheinland-Pfalz

IT security presentation including live hacking

Mar 2013 - Sep 2013

7 months

Lichtenau, Germany

Administrator / Client Support

LS Telcom AG

Server administration VMWare/Windows, BlackBerry Enterprise Server 4.1 and 10
Win7 rollout
Helpdesk

May 2012 - Dec 2012

8 months

Wiesbaden, Germany

Administrator

Bongrain GmbH

Helpdesk
Windows server administration (Server 2008 and 2012): DFS, file services and print servers
Lotus Domino 8.5 administration on VMWare ESXi 5.5
Client management and software distribution with Prism
BlackBerry MDM (BES 5)
Win7 rollout

May 2011 - Apr 2012

1 year

Bretten, Germany

Administrator / Helpdesk

B|S|H| Neff GmbH

Win7 rollout
Windows 2008 server administration (print and file services, DFS) / VMWare

Feb 2011 - Feb 2011

1 month

Fuschl, Austria

Project Manager, Developer

RedBull GmbH

Windows 7 client design, virtualization and deployment project

Feb 2011 - Feb 2011

1 month

Mannheim, Germany

Project Manager / Developer

SüdLeasing GmbH

Windows 7 client design, virtualization and deployment project

Aug 2010 - Dec 2010

5 months

Frankfurt am Main, Germany

Infrastructure Group Lead / Technician / Administrator

Kuraray Europe GmbH

Infrastructure reorganization
Virtualization (30 servers in Frankfurt, 5 in Troisdorf)
Printer solution (complete hardware migration from HP to RICOH, 6 new print servers based on Windows Server 2008)
Hardware rollout (migration of PCs and notebooks from HP, Dell and FSC to Lenovo - replacement of about 700 clients)
Software rollout: introduction of Windows 7, Office 2007/2010, Lotus Notes 8.5
VPN: migration from Cisco to Check Point – coordination of service providers

Jan 2010 - Jul 2010

7 months

Helsinki, Finland

Infrastructure Group Lead / Technician / Administrator (Permanent position)

Kuraray Europe GmbH

Infrastructure concept for site establishment (ESXi servers, 2-20 clients, print solution, VoIP) – connection to Frankfurt infrastructure via VPN
Coordination of involved service providers and occasional on-site support (Milan, Helsinki)

Mar 2009 - Sep 2009

7 months

Aßlar, Germany

Infrastructure Group Lead / Technician / Administrator

Kuraray Europe GmbH

Closure of the Asslar site and complete integration into the Frankfurt site
Concept for server and client integration into the Frankfurt infrastructure (5 servers, 80 clients)

Oct 2006 - Oct 2006

1 month

Frankfurt, Germany

Administrator / Technician

Kuraray Europe GmbH

Implementation of BlackBerry Enterprise Server for Lotus Notes: concept + technical execution for 46 BB clients in collaboration with Research in Motion

Mar 2006 - Sep 2006

7 months

Frankfurt am Main, Germany

Technician / Administrator

Kuraray Europe GmbH and Kuraray Specialities Europ

Closure of the Düsseldorf location, merging Kuraray Europe GmbH (Düsseldorf) and Kuraray Specialities Europe GmbH (Frankfurt) into Kuraray Europe GmbH in Frankfurt
Contributed to the integration concept for relocating the Düsseldorf site to Frankfurt
Expanded the infrastructure (replaced the Windows 2000 domain with a Windows 2003 domain)

Aug 2005 - Aug 2005

1 month

Zwijndrecht, Netherlands

Technician

Kuraray Specialities Europe GmbH

Setup of the sales office
Concept for the site with 4 employees (1 server, 4 clients) + technical implementation
VPN connection to the KSE network

Mar 2005 - Jun 2005

4 months

Troisdorf, Germany

Team Lead / Technician / Administrator

Kuraray Specialities Europe GmbH

Integrated the Troisdorf site (formerly HT-Troplast) into the IT infrastructure of Kuraray Specialities Europe GmbH
Inventory of hardware and software, VPN connection to the KSE network
Developed a concept for reorganizing the site IT (implementation in 2010)
Personnel responsibility for 1 on-site KSE technician

Jun 2004 - Dec 2004

7 months

Frankfurt, Germany

Technician / Administrator

Kuraray Specialities Europe GmbH

Hardware and software rollout for the company founding: concept for rolling out 250 PCs and 40 notebooks
Designed the printer environment: 12 high-volume print systems from HP and Infotec (RICOH) + technical implementation on site
Personnel responsibility for 2 employees from GES Systemhaus as part of the project
Taken on by KSE after successful completion on 01/01/2005 as responsible technician

Jun 2003 - Sep 2003

4 months

Bad Homburg, Germany

Administrator / Technician

Fujitsu Siemens Computers

Merger, relocation and technical upgrade of both Fujitsu Siemens Computers sites in Bad Homburg
Subproject responsibility for the migration from Windows NT/Novell to Windows 2000
Designing new print servers on Windows 2000 and adapting the printer infrastructure
Personnel responsibility for 2 employees from GES Systemhaus as part of the project

May 1996 - Sep 1996

5 months

Chemnitz, Germany

Technician (student assistant)

Chemnitz University - Chair of Social and Economic Geography

Setting up a network independent of the computing center at Chemnitz University for the Chair of Social and Economic Geography at TU Chemnitz
Planning: 2 servers, 8 clients, 1 network scanner, 2 printing systems; based on Windows NT/Novell
Procuring hardware and software
Installing hardware and implementing software (operating system, Microsoft standard applications and SPSS)