Kay Heerwald - Server Administrator

Q: Where is Kay based?

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

Q: What languages does Kay speak?

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

Q: How many years of experience does Kay have?

Kay has at least 30 years of experience. During this time, Kay has worked in at least 32 different roles and for 32 different companies . The average length of individual experience is 1 year and 10 months . Note that Kay may not have shared all experience and actually has more experience.

Q: What is Kay's latest experience?

Kay's most recent position is Server Administrator at WIVERTIS GmbH .

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

In recent years, Kay has worked for WIVERTIS GmbH , WAGO GmbH & CoKG , Telair International GmbH , Cardif Service GmbH , and Elis Group Service GmbH .

Q: Which industries is Kay most experienced in?

Kay is most experienced in industries like Information Technology (IT) , Banking and Finance , and Chemical . Kay also has some experience in Manufacturing , Food and Beverage , and Insurance .

Q: Which business areas is Kay most experienced in?

Kay is most experienced in business areas like Information Technology (IT) , Operations , and Customer Service . Kay also has some experience in Quality Assurance (QA) , Procurement and Purchasing , and Project Management .

Q: Which industries has Kay worked in recently?

Kay has recently worked in industries like Information Technology (IT) , Insurance , and Professional Services .

Q: Which business areas has Kay worked in recently?

Kay has recently worked in business areas like Information Technology (IT) , Operations , and Customer Service .

Recommended expert

Wiesbaden, Germany

Experience

Jun 2025 - Dec 2025

7 months

Wiesbaden, Germany

Server Administrator

WIVERTIS GmbH

Daily business
Ticket processing
Permission 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 informative security status reports
User support: Providing direct help to users with security issues and resolving them at the user level
Patch management: Experience with patch management tools, especially Ivanti
Windows expertise: Proficient in Windows 10/11, vulnerability identification and remediation
Microsoft tools: Familiar 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 software distribution structure

Jun 2023 - Dec 2023

7 months

Gerlingen, Germany

IT Windows Server Architect

Cardif Service GmbH

Phase 1:
Analysis of current run operation and backup processes with a focus on IT security and performance
Design and development of a possible target architecture
Identifying automation opportunities
Reconciling parameter changes
Phase 2:
Building the server architecture
Testing the server environment
Improving performance and security
Test documentation and preparing analysis results
Troubleshooting and debugging
Phase 3:
Reviewing and securing the systems
Documentation
Handover to operations

Oct 2022 - Feb 2023

5 months

Germany

Windows System Administrator

Elis Group Service GmbH

On-site migrations of new sites
Technical site integration into the company's Windows domain: server, user, and AD migrations
On-site training and coordination with branch managers
Support and coordination of setting up Citrix workstations
Cabling and support for installing or modifying antennas
Management, configuration, and administration of Windows domain, clients, and printers

May 2022 - Aug 2022

4 months

Wiesbaden, Germany

Operations Specialist for business applications and their infrastructures

Hessische Zentrale für Datenverarbeitung (HZD)

Provisioning and administration of business applications, both technical and functional
Administration of database systems
Applying incident, problem, change, and release management processes according to ITIL/ITSM
Creating and maintaining technical and functional concepts, documentation, and operation manuals

May 2021 - Mar 2022

11 months

Technical Consultant for Microsoft Evergreening

T-Systems International GmbH

Test scenarios for the Evergreening project
Upgrade / in-place update to Windows 10 20H2
Supporting the service desk (1st level support) in Hungary

Mar 2021 - Aug 2021

6 months

Lead Client Engineer for rollout project

T-Systems International GmbH

Coordinating the takeover of fat client management by T-Systems (provider switch)
Test scenario and integration into the management system (Ivanti DSM)
Troubleshooting with pilot users
Handover to operations (service desk)

Mar 2020 - Oct 2020

8 months

Wiesbaden, Germany

Application Management / Packaging Coordination

SWISS IT Security Deutschland GmbH

Coordinating and organizing software products with product owners during a Windows 10 migration in an SCCM/Intune environment
Application management in software deployment
Coordinating teams
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
Perform updates to the system environment
Applying patches
Assisting in creating concepts
Implementing according to plans; system support; running tests
Documenting and handing over programs
Creating effort estimates for tasks
Basic finance-related knowledge
Support, tuning, installation of system hardware and software
Creating concepts
Coordinating external partners

Jul 2018 - Sep 2018

3 months

Heusenstamm, Germany

IT System Administrator - Windows / VMware / Linux

ITSG GmbH

OS installations on servers
Migration of Windows Server 2008, 2012 to Server 2016
Virtualization with VMware and Hyper-V
Application migration, system configuration, infrastructure planning
Support in installing middleware components on Linux (Tomcat, Apache, Java, JBoss/WildFly)

May 2016 - Nov 2038

22 years 7 months

Lahnstein, Germany

Managing Director of Technology

ITCKH GmbH

Operating and improving 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
Handling escalation processes in case of failures
Resolving incidents
Acting as interface and support for incident, problem, and change management
Performing administrative tasks

Jul 2015 - Jan 2016

7 months

Hamburg, Germany

System Support and Operational Assistance

BERENBERG BANK

Administration of MS Exchange 2010
Administration of MS Lync 2010
Administration of VoIP servers
Applying updates to endpoint devices (BlackBerry, iOS, and Android)
User management for BlackBerry and AirWatch
Troubleshooting from devices through platform to server and network
Maintenance of 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 and 2012

Jan 2015 - Mar 2015

3 months

Frankfurt, Germany

In-house Support / Administrator

Degussa Bank AG

Helpdesk (2nd level)
Client management (PC and mobile devices)
Print server management (Server 2008 migration 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)
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 8/8.5 on VMware ESXi
Print server and printer management (Server 2008 R2)
File server management (Server 2008 R2) + DFS
Windows 7 rollout

Jun 2013 - Jun 2013

1 month

Mainz, Germany

Consultant

Rhineland-Palatinate Chamber of Tax Advisors

IT security presentation including live hacking

Mar 2013 - Sep 2013

7 months

Lichtenau, Germany

Administrator / Client Support

LS Telcom AG

VMware/Windows server administration, BlackBerry Enterprise Server 4.1/10
Windows 7 rollout
Helpdesk

May 2012 - Dec 2012

8 months

Wiesbaden, Germany

Administrator

Bongrain GmbH

Helpdesk
Windows server administration (Server 2008/2012): 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)
Windows 7 rollout

May 2011 - Apr 2012

1 year

Bretten, Germany

Administrator / Helpdesk

B|S|H| Neff GmbH

Windows 7 rollout
Windows Server 2008 administration (print and file services, DFS) / VMware

Feb 2011 - Feb 2011

1 month

Fuschl, Austria

Project Manager, Developer

Red Bull GmbH

Client design Windows 7, virtualization and distribution project

Feb 2011 - Feb 2011

1 month

Mannheim, Germany

Project Manager / Developer

SüdLeasing GmbH

Client design Windows 7, virtualization and distribution project

Aug 2010 - Dec 2010

5 months

Troisdorf, Germany

Infrastructure Team Lead / Technician / Administrator

kuraray europe GmbH

Reorganization of the infrastructure
Sub-project Virtualization (30 servers in Frankfurt, 5 in Troisdorf)
Sub-project Printer solution: switched hardware from HP to RICOH, 6 new print servers on Windows Server 2008
Sub-project Hardware rollout: switched PCs and notebooks (HP, Dell, FSC) to Lenovo (~700 clients)
Sub-project Software rollout: introduction of Win7, Office 2007/2010, Lotus Notes 8.5
Sub-project VPN: switched from Cisco to Checkpoint – coordination of service providers

Jan 2010 - Jul 2010

7 months

Helsinki, Finland

Infrastructure Team Lead / Technician / Administrator

kuraray Europe GmbH

Infrastructure concept for startup (ESXi servers, 2-20 clients, print solution, VoIP)
Connection to the Frankfurt infrastructure via VPN
Coordination of involved service providers and on-site support

Mar 2009 - Sep 2009

7 months

Aßlar, Germany

Infrastructure Team Lead / Technician / Administrator

kuraray europe GmbH

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

Oct 2006 - Oct 2006

1 month

Frankfurt, Germany

Administrator / Technician

Kuraray Europe GmbH

Implementation of a BlackBerry Enterprise Server for Lotus Notes: planning and technical implementation for 46 BB clients in collaboration with Research In Motion

Mar 2006 - Sep 2006

7 months

Düsseldorf, Germany

Technician / Administrator

Kuraray Europe GmbH

Closure of the Düsseldorf site, merger into Kuraray Europe GmbH Frankfurt
Integration concept for the Düsseldorf site
Infrastructure expansion: replacing a 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 (1 server, 4 clients) and technical implementation
VPN connection to the KSE network

Mar 2005 - Jun 2005

4 months

Troisdorf, Germany

Team Lead / Technician / Administrator

Kuraray Specialities Europe GmbH

Integration of the Troisdorf site into the IT infrastructure
Inventory of hardware and software, VPN connection to the KSE network
Plan for reorganizing the site IT
Personnel responsibility for one on-site technician

Jun 2004 - Dec 2004

7 months

Frankfurt, Germany

Technician / Administrator

Kuraray Specialities Europe GmbH

Hardware and software rollout for the company's founding: rollout plan for 250 PCs and 40 notebooks
Design of the printing environment: 12 high-volume printing systems from HP and Infotec (RICOH) and technical implementation
Personnel responsibility for two employees from GES Systemhaus
Retained as lead technician after project completion

Jun 2003 - Sep 2003

4 months

Bad Homburg, Germany

Administrator / Technician

Fujitsu Siemens Computers

Consolidation, relocation, and technical upgrade of two sites
Subproject responsibility for migration from Windows NT/Novell to Windows 2000
Design of new print servers on Windows 2000 and adaptation of the printing infrastructure
Personnel responsibility for 2 employees from GES Systemhaus

May 1996 - Sep 1996

5 months

Chemnitz, Germany

Technician (student assistant)

Chemnitz University - Chair of Social and Economic Geography

Set up an independent network for the chair
Planning: 2 servers, 8 clients, 1 network scanner, 2 printing systems; based on Windows NT/Novell
Procurement of hardware and software
Hardware assembly and software implementation (operating system, Microsoft standard applications, and SPSS)

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (23 years), Banking and Finance (4.5 years), Chemical (3 years), Manufacturing (1.5 years), Insurance (0.5 years), and Professional Services (0.5 years).

Information Technology

Banking and Finance

Chemical

Manufacturing

Insurance

Professional Services

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (30 years), Operations (22.5 years), Customer Service (3 years), Quality Assurance (0.5 years), Project Management (0.5 years), and Procurement (0.5 years).

Information Technology

Operations

Customer Service

Quality Assurance

Project Management

Procurement

Skills

Ios
It Consultant
It Service Management (Itsm)
It Security (General)
Microsoft Exchange
Microsoft Windows (General)
Project Management / Team Leadership (It)
Vmware Vcenter
Vmware Vsphere

Languages

German

Native

English

Advanced

Education

Oct 1990 - Jun 1993

Industrial Clerk (IHK) · Chemnitz, Germany

Oct 1988 - Jun 1991

Mechanic DuB (IHK) · Chemnitz, Germany

Certifications & licenses

IT Forensics Workshop

MicrosoftCertifiedSolutionsAssociate (MCSA)

MicrosoftCertifiedITProfessional (MCITP)

MicrosoftCertifiedTechnologySpecialist (MCTS)

Profile

Created

August 2025

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Frequently asked questions

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

Where is Kay based?

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

What languages does Kay speak?

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

How many years of experience does Kay have?

Kay has at least 30 years of experience. During this time, Kay has worked in at least 32 different roles and for 32 different companies. The average length of individual experience is 1 year and 10 months. Note that Kay may not have shared all experience and actually has more experience.

What roles would Kay be best suited for?

Based on recent experience, Kay would be well-suited for roles such as: Server Administrator, Windows Client / Incident Specialist, Client management.

What is Kay's latest experience?

Kay's most recent position is Server Administrator at WIVERTIS GmbH.

What companies has Kay worked for in recent years?

In recent years, Kay has worked for WIVERTIS GmbH, WAGO GmbH & CoKG, Telair International GmbH, Cardif Service GmbH, and Elis Group Service GmbH.

Which industries is Kay most experienced in?

Kay is most experienced in industries like Information Technology (IT), Banking and Finance, and Chemical. Kay also has some experience in Manufacturing, Food and Beverage, and Insurance.

Which business areas is Kay most experienced in?

Kay is most experienced in business areas like Information Technology (IT), Operations, and Customer Service. Kay also has some experience in Quality Assurance (QA), Procurement and Purchasing, and Project Management.

Which industries has Kay worked in recently?

Kay has recently worked in industries like Information Technology (IT), Insurance, and Professional Services.

Which business areas has Kay worked in recently?

Kay has recently worked in business areas like Information Technology (IT), Operations, and Customer Service.

What is Kay's education?

Kay attended education in Industrial Clerk (IHK).

Does Kay have any certificates?

Kay has 4 certificates. Among them, these include: IT Forensics Workshop, MicrosoftCertifiedSolutionsAssociate (MCSA), and MicrosoftCertifiedITProfessional (MCITP).