Volker (M.) Reisberger - IT Consultant, IT Architect, Senior System Administrator and Lecturer
Experience
Architect and Senior System Administrator
International Trading Company
- Analysis and optimization of the VMware environment for operation in a critical infrastructure environment
- Planning and execution of updates for the VMware and hardware environment in a critical infrastructure environment
- Deployment of Skyline Health Diagnostics
- Review of existing documentation
- Training and onboarding of new internal staff
- Support for migration and upgrade projects
- Preparation for moving scripts in the virtualization environment to GitLab
- Ticket handling with ServiceNow
Acting team lead
Global manufacturer of automotive spare parts
- Acting team lead of the IT-OPS team with a total of 25 internal and external employees
- Prioritizing projects and resources
- Coordinating projects and priorities with other departments
- Staff management
- Setting and reviewing annual targets for each employee
- Hiring new employees including job postings and interviews
Architect and Senior System Administrator
Global manufacturer of automotive spare parts
- Technical project lead for the architecture and implementation of a new modular virtualization environment for 1,000–10,000 VMs
- Migration to the new VMware environment
- Migration from VMware 7 to VMware 8 (vCenter and hosts)
- VMware/Broadcom license optimization, coordinating licensing and hardware design, and aligning license packages
- Training and onboarding of new internal and external staff
- Improving the architecture of current server deployments
- Setup of new server deployment including architecture (planning and execution)
- Improving the architecture of the existing VMware environment
- Handling various smaller projects
- KMS license management for the entire company
- Microsoft CSE/SQL license optimization
- Migration of an old MSSQL 2008 cluster to virtual hardware
- Revising maintenance windows
- SCCM patch management
- Evaluation and introduction of a centralized password manager
- Ticket handling and project planning with Atlassian JIRA
Senior System Administrator / IT Manager
International Event Agency
- Implementation of NAS systems
- Migration to Office 365
- Migration from SBS2011 to Windows Server 2019
- Development and implementation of a data backup concept
- Consolidation of physical servers into virtual servers
- Redesign of data networks
Senior System Administrator and Architect
Municipal utility and service company
- Technical project lead for the architecture and implementation of a new modular virtualization environment for 5,000–25,000 VMs
- Training and onboarding of new internal and external staff
- Managing a team of external staff
- Improving the architecture of current server deployments
- Project lead for the setup of a new server deployment including architecture (planning and execution)
- Project lead for server deployment migration (planning and execution)
- Project lead for the new setup of self-service for the deployment of Linux laptops
- Improving the architecture of the VMware environment
- Handling various smaller projects
- KMS license management for the entire company
- VMware and Microsoft CSE/SQL license optimization
- Prioritizing projects and manpower
- Planning and prioritizing resources
- Server deployment (automated and semi-automated)
- SCCM patch management
- Revising maintenance windows
Senior System Administrator
Municipal utility and service company
- Server deployment
Senior System Administrator
International large corporation
- Installation of physical/virtual Windows systems
- Support/administration of large virtualization environment (VMware)
- Support/administration/installation of HP enclosures and blades
- Monitoring of the virtualization environment (VMware VCOPs/vROMs and vCheck)
- Installation and operation of ESXi servers
- Installation of ESXi server updates
- Onboarding of new internal and external employees
- Creation of onboarding plans
- Assistance in selecting suitable candidates
- Technical support for data center relocations
- Data center operations including on-call duty, especially in the high-security data center
- Reviewing software licensing for virtualization and support for the licensing department
- End-user support for technical issues; technical customer consulting
- Managing objects in Active Directory
- Creating and customizing scripts
- Maintaining relevant system documentation such as authorization concepts and related documents
- Incident/problem management / change management as part of problem resolution, possibly via remote access
- Change management - updating system and system-related software (new patches)
- Change management - configuration changes
- Implementation of security bulletins (security-related patches)
- Security management (virus scans, CERT settings)
- Business continuity of servers and services
- Setting up and managing user environments (user administration)
- Performance management / resource management
- Event management
- Expanding server storage via SAN / NAS
- Migrating virtualization storage to systems from PURE
- Operation and configuration of PURE Storage SAN (all-flash storage)
- Maintaining and managing additional system-related software
- Managing printer environments (printer administration)
- Changing permissions via Active Directory (AD)
- Developing an authorization concept for vCenter access
- Service availability management / capacity management
- Setting up systems management (ensuring contractually agreed SLAs)
- Customer/system/application-specific settings (customizing)
- Installing / setting up and managing additional system-related software
- Working with BMC Remedy and FITS (problem/change management) and AixpertSoft AixBoms (CMDB)
- Working with GitHub/GitLab and a proprietary version control software from the client
Migration/virtualization of server infrastructure
Wholesale in the food sector
- Replacement of server hardware
- Software license audits
- Replacement of VMware ESX 4.x with ESX 5.5
- Migration of existing data and mailboxes
- Introduction of MS Active Directory, MS Exchange Server and GFI Faxmaker
- Replacement of various printers with a central MFP solution
- Development and implementation of a data backup concept
- Preparation and provision of server systems for an ERP system
- Connecting locations via VPN
- Creation of detailed documentation for network and IT systems
- Employee training
Senior System Administrator in the securities trading/exchange area
International banking corporation
- Installation of physical/virtual Windows systems
- Installation of release updates (OS + applications)
- Administration and installation of virtualization environment (VMware), HP enclosures, blades, double dense blades, rack servers, ESXi servers
- Operation of MS server clusters
- Monitoring of systems
- Managing objects in Active Directory
- Creating and customizing scripts (batch, CM, PowerShell)
- Administration of data center operations including on-call duty
- End-user support and administration for technical issues; technical customer consulting
- Maintaining relevant system documentation
- Incident, problem, change management
- Software license management and software asset management for the virtualization solution
- Security and user management
- Performance management / resource management
- Expanding server storage via SAN / NAS
- Managing printer environments (printer administration)
- Managing fax server environments
- Troubleshooting and support for applications
Migration/virtualization of server infrastructure
Law firm
- Replacement of server hardware
- Replacement of VMware ESX 4.x with ESX 5.5
- Migration of existing data and mailboxes
- Introduction of MS Active Directory, MS Exchange Server and GFI Faxmaker
- Replacement of various printers with a central MFP solution
- Development and implementation of a data backup concept
- Creation of detailed documentation for network and IT systems
- Training of employees
Senior System Administrator
International large corporation
- Installation of physical/virtual Windows systems
- Maintenance/administration of large virtualization environment (VMware)
- Maintenance/administration/installation of HP enclosures and blades
- Monitoring of the virtualization environment (VMware vCOPs and vCheck)
- Installation and operation of ESXi servers
- Technical support for data center migrations
- Data center operations including on-call duty, especially in the high-security data center
- End-user support for technical issues; professional customer consulting
- Managing objects in Active Directory
- Creating and adapting scripts
- Maintaining relevant system documentation such as permission concepts
- Incident/problem management / change management as part of problem resolution, possibly via remote access
- Change management - system or system-related software updates (new patches)
- Change management - configuration changes
- Implementing security bulletins (security-related patches)
- Security management (virus scans, CERT settings)
- Business continuity of servers and services
- Setting up and managing user environments (user administration)
- Performance management / resource management
- Event management
- Expanding server storage via SAN / NAS
- Maintaining and managing additional system-related software
- Managing printer environments (printer administration)
- Changing permissions via Active Directory (AD)
- Service availability management / capacity management
- Setting up systems management (ensuring contractually agreed SLAs)
- Customer/system/application-specific settings (customizing)
- Installing / configuring and managing additional system-related software
- Working with BMC Remedy (problem/change management) and AixpertSoft AixBoms (CMDB)
Setup and support of a client/server network
Regio Media Networks UG
- Consulting and implementation for setting up and operating a client-server network on Windows 7 and Windows Small Business Server 2008
- Setting up a network fax solution for sending batch faxes
- Connecting a portal solution, PayPal and the local accounting software
IT Manager
Ortholutions GmbH & Co. KG
- Planning, coordinating, and executing the move of the complete IT infrastructure to new offices
- Planning, coordinating, and executing the complete network cabling in the new offices
- Coordinating the move of telephone and internet connections
IT Manager
Ortholutions GmbH & Co. KG
- Taking inventory of current hardware
- Reviewing the current network structure
- Creating a data backup plan
- Ongoing IT support on site and via remote maintenance
IT Manager
Mondversand Joey Haas
- Inventorying current hardware
- Sizing new server and network hardware and software
- Reviewing current software licensing
- Deploying SBS 2003 and domain structure
- Migrating from Lexware financial Office 2002 to Lexware financial Office Pro 2007
- Integrating all workstations into the network
- Evaluating new hardware
- Providing ongoing IT support on site and via remote maintenance
- Consulting and coordinating with a web agency for running an online shop
IT manager
ZIB: Center for Innovative Education of bfz gGmbH
- Recording current hardware
- Sizing new server, network hardware and software
- Reviewing current software licensing
- Migrating to school licenses
- Software asset management for the training network
- Integrating all workstations into the network
- Integrating e-learning modules into the training concept
- Designing new e-learning modules
- Connecting branch offices
- Implementing internet access protection for students and participants using time-for-kids
- Evaluating new hardware
- Evaluating an address management system (COBRA Address Plus 11 SQL, COBRA Address Plus 11, online address database via the employment agency, adaptation of existing address management)
- Ongoing IT support on site and via remote maintenance
IT officer
Kolping Hotel Munich
- Recording current hardware
- Sizing new server, network hardware and software
- Reviewing current software licensing
- Optimizing software licensing in the Microsoft environment
- Integrating all workstations into the network
- Implementing internet access protection using time-for-kids
- Evaluating new hardware
- Ongoing IT support on site and via remote maintenance
Setup and support of training network; IT manager
IT training center of the Kolping Educational Foundation
- Recording current hardware
- Sizing new server, network hardware and software
- Reviewing current software licensing
- Migrating to school licenses
- Regular software license audits
- Integrating all workstations into the network
- Integrating DATEV workstations into the network
- Switching training operations from DATEV to Lexware
- Implementing internet access protection for students and participants using time-for-kids
- Evaluating an address management system (COBRA Address Plus 11 SQL, online address database via the employment agency, adaptation of existing address management)
- Separating training and administration networks
- Restructuring the firewall concept
- Ongoing IT support on site and via remote maintenance
Lecturer
Employment Agency on behalf of the Kolping Educational Foundation
- Training job seekers in MS Word, MS Excel and MS Outlook
Supporting the internal IT department
SupplyOn AG on behalf of PC-WARE AG/Comparex AG
- Packaging and deploying new software using Enteo NetInstall and Microsoft SCCM
- Automating new installations of laptops and desktop PCs using Enteo OSD and Microsoft SCCM
- Distributing security updates and patches via Enteo NetInstall, MS WSUS Server and MS SCCM
- Managing, creating and maintaining S/MIME certificates and PGP keys on the email encryption gateway
- Regularly reviewing the disaster recovery concept with Symantec/Veritas Backup Exec IDR
- Switching data backup to HP Data Protector 6.20
- Regularly reviewing the EADR (disaster recovery) concept with HP Data Protector
- Performing Veritas/Symantec Backup Exec upgrades from 9.1 to 11d, 12 and 12.5
- Performing enteo NetInstall upgrades from 5.7 SE to 6.0, 6.1 and 6.2
- Software distribution via MS SCCM
- Software asset management for Microsoft subscription licenses via MS SCCM
- Software license management for backup software and communications/telephony software
- Migrating from MS Office 2000 to MS Office 2007 and from MS Office 2007 to MS Office 2010
- Eliminating IT security vulnerabilities
- Preparing the internal IT department for audits
- Checking and updating the company-wide antivirus protection
- Monitoring network, servers etc. with OP5
- Migrating VMs from VMware ESX Server to MS Hyper-V
- User helpdesk for employees on-site and in the home office
- Managing Active Directory and MS Exchange Server
- Email archiving EASY xBase, email encryption JULIA Mail-Office, MS WSUS, MS SharePoint Portal Server 2007, MS Office Communication Server/Lync 2010 Server, MS Hyper-V Server, MS Hyper-V Cluster, VMware ESX Server, RSA appliance and tokens, MacMon, OmniVista
- Developing concepts for virtualization, RSA tokens, WLAN, lifecycle management and Microsoft SPLA licensing
- Evaluating travel expense management, anti-spam/anti-virus solutions, SAN/NAS systems, MS Windows Server and Exchange Server and SQL Server migrations, AD migration, VoIP telephony systems, video conferencing systems, WLAN network
Technician
T-VOS
- Inspecting reported defects of technical devices such as PCs, laptops, TVs, receivers, ovens, etc. for lightning, water, and other damage for various insurance companies or user fault
- Preparing inspection reports and logs
IT Officer
Insolvency Administrator Mr. Bierbach
- Deleting and destroying data according to data protection guidelines for highly sensitive data (level 4 and 5)
- Physically destroying or securely erasing storage media
Disaster recovery for MS Windows Small Business Server 2003
FAM
- Restoring server functionality after incorrect operation
- Ensuring and restoring backups of data and Exchange mailboxes
- Reinstalling the server and restoring the data
- Creating a plan to prevent similar situations
Migration from MS SBS 2000 to MS SBS 2003
FAM
- Designing and executing the migration from Microsoft Small Business Server 2000 to Microsoft Small Business Server 2003 Standard while replacing the server hardware
IT Manager / Project Manager
Second Chance Body Armor GmbH
- Implementing an ASAP ERP system from the USA for textile production
- Coordinating between programmers in the USA and Germany, client departments and data protection officers
- Quality control of the customizations and developing an interface to the measurement software
Lecturer
DAA Deutsche Angestellten Akademie GmbH
- Teaching career changers training as IT specialists and IT business specialists in various subjects
- Teaching apprentices in the fields of electricians, energy electronics technicians, IT specialists, system electronics technicians, communication electronics technicians and radio electronics technicians
IT Manager, IT Support
Second Chance Body Armor GmbH
- Managing servers, hardware antivirus scanners, desktop systems and laptops on-site and via remote support
- Close collaboration with administrators at the headquarters in Michigan, USA, and the state data protection officer
- Complete dismantling and data protection compliant disposal of the IT infrastructure after the parent company's insolvency
Project Manager
Second Chance Body Armor GmbH
- Planning a data network and telephone network including a phone system for an office building and warehouse
- Technical design and sizing, and overseeing the cable installation
- Setting up a VPN connection to the parent network in Michigan, USA
IT Manager
Vereinigte Riederinger Hafnerei GmbH
- Managing the IT network of a craft business and simplifying daily tasks on-site and via remote support
Lecturer
Kolping Bildungswerk München/Oberland
- Teaching apprentices in the field of electrical engineering
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Education, Information Technology, Professional Services, Food and Beverage, Manufacturing, and Retail.
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Operations, Human Resources, Project Management, Customer Service, and Quality Assurance.
Summary
I am an IT expert with extensive experience in virtualization, server architecture and system administration and have managed and optimized large-scale IT infrastructures across various industries. My strengths are in planning and executing migrations, upgrades and license optimizations, ensuring smooth operations in complex environments.
I have successfully led technical teams and training initiatives, delivering smart, practical solutions for both high security requirements and daily operational needs. My approach combines technical expertise with hands-on leadership and a solid background in IT service management.
Translated with DeepL.com (free version)
Skills
- Operating Systems: Microsoft Windows Server 2025, 2022, 2019, 2016, 2012r2, 2012, 2008r2, 2008, 2003, 2000
- Operating Systems: Microsoft Windows 11, 10, 8, 7, Vista, 2000, Xp
- Operating Systems: Microsoft Windows Small Business Server 2011, 2008 And 2003
- Operating Systems: Basic Linux (Sles, Red Hat, Ubuntu, Debian, Centos)
- Virtualization: Vmware Esxi Server
- Virtualization: Vmware Vsphere Vcenter
- Virtualization: Vmware Vcops / Vroms
- Virtualization: Vmware Srm
- Virtualization: Vmware Vsan
- Virtualization: Vmware Nsx
- Virtualization: Vmware Infrastructure Client
- Virtualization: Vmware Infrastructure Converter
- Virtualization: Vmware Replication
- Virtualization: Vmware Aria Operations Automation
- Virtualization: Vmware Aria Operations For Log
- Virtualization: Vmware Skyline Health Diagnostics
- Virtualization: Microsoft Hyper-v
- Virtualization: Microsoft Virtual Server 2003
- Virtualization: Microsoft Virtual Pc 2005
- Applications: Microsoft Office 2022, 2019, 2016, 2013, 2010, 2007, 2003, Xp, 2000
- Applications: Microsoft Office 365
- Applications: Lexware Financial Office 2021 And Earlier Versions Back To 2005
- Databases: Microsoft Sql Server
- Collaboration Software: Microsoft Exchange Server 2019, 2016, 2013, 2007 And 2003
- Collaboration Software: Microsoft Sharepoint Services (Wss)
- Collaboration Software: Microsoft Sharepoint Server 2007 (Moss)
- Collaboration Software: Microsoft Office Communication Server 2007
- Collaboration Software: Microsoft Lync 2010
- Collaboration Software: Microsoft Skype
- Collaboration Software: Easy Xbase Email Archiving
- Software Deployment And Patch Management: Microsoft Windows Server Update Services (Wsus)
- Software Deployment And Patch Management: Microsoft Sccm
- Software Deployment And Patch Management: Frontrange Enteo Netinstall (Software Distribution And Software Shop)
- Software Deployment And Patch Management: Frontrange Enteo Osd (Operating System Deployment)
- Software Deployment And Patch Management: Hyperdb
- Software Deployment And Patch Management: Eurodb
- Software Deployment And Patch Management: Hpsa
- Scripting: Powershell
- Scripting: Batch / Cmd
- Version Control Software: Gitlab
- Version Control Software: Github
- Version Control Software: Proprietary Solution Of A Client
- Virus And Spam Protection: Trend Micro Office Scan
- Virus And Spam Protection: Trend Micro Server Protect
- Virus And Spam Protection: Trend Micro Mailscan For Microsoft Exchange
- Virus And Spam Protection: Trend Micro Interscan Web Security Suite
- Virus And Spam Protection: Trend Micro Interscan Messaging Security
- Virus And Spam Protection: Eset End Point Protection
- Virus And Spam Protection: Eset Mail Server Protection
- Virus And Spam Protection: Gdata Client/server
- Virus And Spam Protection: Gdata Mailgateway
- Virus And Spam Protection: Gdata Business Suite
- Virus And Spam Protection: Avira Antivir Premium
- Virus And Spam Protection: Mcafee Endpoint Protection
- Virus And Spam Protection: Sophos Central Protect
- Monitoring: Prtg
- Monitoring: Checkmk
- Monitoring: Op5
- Monitoring: Nagios
- Monitoring: Splunk
- Monitoring: Vcheck
- Monitoring: Vmware Vcops / Vrom
- Monitoring: Ipswitch Whatsup Gold
- Monitoring: Hp Monitoring Cockpit
- Monitoring: Hp Sim
- Monitoring: Microsoft Scom
- Monitoring: Bmc Enterprise Manager (Bem)
- Data Backup: Veeam
- Data Backup: Symantec (Veritas) Backup Exec 2012, 2010 R3, 12.5, 12.0, 11d, 10, 9
- Data Backup: Hp Data Protector 6.20
- Security: Icc Julia Mailoffice (Gateway For Email Encryption, Management For S/mime And Pgp Certificates)
- Security: Emc² Rsa Securid (Two-factor Authentication For Vpn Login, Os Login)
- Security: Macmon (Network Monitoring And Blocking Of Suspicious Ports)
- Security: Alcatel-lucent Omnivista (Monitoring Switches, Voip System And Wlan Infrastructure)
- Security: Safeq (Secure Printing)
- Security: Endian Firewall
- Security: Ipfire Firewall
- Security: Vpn: Ipsec / Openvpn
- Web: Html (Basics)
- Web: Php (Basics)
- Cmdb: Aixpertsoft Aixboms
- Cmdb: Fnt Command
- Ticketing Tools: Servicenow
- Ticketing Tools: Atlassian
- Ticketing Tools: Omnitracker
- Ticketing Tools: Bmc Remedy
- Ticketing Tools: Ttp
- Ticketing Tools: Hp Service Manager / Hp Sm
- Ticketing Tools: Atlassian Jira
- Administration Tools: Hyena
- Conscientious And Independent Working
- Find And Fix Issues Before They Occur
- Team Player
- Quick Learner
- Analytical Thinking
- Willingness To Learn
- Work In An International Corporate Environment
- Work In Banking And Stock Exchange Environments
- Work In Data Center And High-security Data Center Environments
- Goal-oriented And Successful Task Execution
- Timely And Results-oriented Work
- Highly Independent, Careful And Conscientious Work Style
Languages
Education
Diploma Engineer (FH) · Electrical and Information Engineering, specialization in Communications and High-Frequency Engineering
Certifications & licenses
ITIL Foundation Certificate in IT Service Management
Statistics
Experience
Global Experience
Expertise
Qualifications
Profile
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