Holger Lorenz

Self-employed specialist in telephone system installation and communication technology

Velbert, Germany

Experience

Apr 2019 - Oct 2022
3 years 7 months
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Compleo / Innogy

  • Consulting in the problem management process
  • Consulting for the quality assurance process
  • Conducting problem reviews and tracking associated measures and their implementation
  • Identifying and documenting continuous process improvements/optimization potentials
  • Ticket handling in the area of e-mobility, charging stations and wall boxes
  • Identifying and creating solutions for various inquiries and faults
  • Commissioning external service providers to restore charging stations and wall boxes
  • Correcting POI data by determining the exact locations of charging stations
  • Technical support for foreign technicians, mostly in English
  • Software used: ICON, Salesforce, eOperate
Nov 2015 - Present
9 years 9 months

Self-employed specialist in the field of telephone system installation and communication technology

  • Planning, maintenance and installation of telephone systems, ISDN, DSL, All-IP and SIP-Trunk connections
  • Administration, maintenance, troubleshooting and repair of PBX systems and extensions
  • Remote support / telephone support
  • System and network administration
  • Rollout coordination and sub-project management
  • User support
  • User training
  • Laser safety officer
  • Consultant for LED lighting

Used technologies:

  • PBX systems from Panasonic, Tiptel, Auerswald, Siemens, Agfeo and other manufacturers
  • Windows client operating systems
  • VMware Workstation
  • TeamViewer, Remote Desktop
  • MS Office, OpenOffice
  • Synology NAS
  • HP Service Center, HP ALM, Remedy
  • Landesk ticket system
  • Software distribution SCCM, Robocopy, etc.
Mar 2015 - Mar 2015
1 month
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Dorma

  • Processing existing incidents and requests (categorization and prioritization) after the ticket system change
Jul 2014 - Present
11 years 1 month

Trade, craftsmanship and gastronomy

  • Energy consulting and sales of LED lamps
Mar 2013 - Jun 2014
1 year 4 months
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RWE IT GmbH

  • Operational rollout planner for Windows 7
  • Deputy sub-project manager
  • Windows 7 software clearing
  • Project-related monitoring of the ticket system (categorization and prioritization)
  • Central communication interface in the project
  • Coordination of the rollout process according to customer forecast
  • Customizing the project-specific rollout tool
  • Designing and maintaining the software and hardware matrix
  • Collaboration with order management on new orders
  • Europe-wide rollout planning in English (e.g., UK, Spain, Poland)
  • Training and support of customers for the rollout tool
Jun 2012 - Jan 2013
8 months
Remote
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AUMA Riester GmbH & Co. KG

  • Point of contact and remote/telephone support for international sites (English)
  • PC support 1st, 2nd and partially 3rd level (Windows 7/XP)
  • Data distribution to international sites with Robocopy
  • Troubleshooting of IT end devices
  • Lync client installation and configuration as well as user instruction
  • Office 2010 rollout
  • Software updates
  • Installation and configuration of telephone systems
  • Installing and configuring PCs, notebooks, workstations and printers
  • Inventory of end devices
  • Procurement and configuration of special software
Nov 2011 - Dec 2011
2 months
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BFS Risk & Collection (Arvato)

  • System and network administration
  • Categorization and prioritization of incidents
  • Infrastructure support
  • 1st, 2nd, 3rd level support (Windows XP)
  • Server administration Windows 2003
  • Hardware installation and maintenance
Aug 2011 - Nov 2011
4 months
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RWE AG Essen

  • Project support in license management
  • Verification and research of current/required software versions, data sources, license variants, information gathering and provisioning of sources
Sep 2010 - Dec 2015
4 years 4 months
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Innere Mission Neviges GmbH

  • Maintenance and support of the nurse call system and telephone systems in Heiligenhaus, Velbert and Velbert-Neviges
  • On-call service for the nurse call system
  • Configuration and maintenance of the light call and alarm server for communication with the telephone system for room and emergency calls
  • Configuration, installation and repair of the electronic components of the nurse call system
  • Configuration of telephone systems:
  • Setting up or replacing mobile phones
  • Setting up call forwarding
  • Configuration of group call numbers
Jun 2010 - Aug 2011
1 year 3 months
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Scriptus Laser Technologie GmbH

  • Support Windows 2003 Server
  • Managing and setting up user accounts
  • Rights management
  • Access to server drives
  • Setting up network printers
  • Adding and removing client PCs
  • Installing server-based network software
  • Installing clients with Win7, Vista and WinXP
  • Installation of MS Office
  • Installation of additional software after license review
  • Data recovery after virus and malware infection
  • Network backup consulting
  • Prevention against viruses and other harmful software in the network
Apr 2010 - Aug 2011
1 year 5 months
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Zimmlinghaus GmbH

  • Installing office PCs with Win7 and Vista
  • Installing and setting up the network printer (all-in-one device)
  • Setup and configuration of inventory and billing software
  • Installation of Kärcher spare parts software
  • Installation of MS Office
  • Installation of internet routers with integrated telephone system
  • Installation of additional software after license review
Sep 2009 - Present
15 years 11 months

IT service provider

  • Installing and delivering hardware (PCs, notebooks, monitors, printers, etc.) for customers
  • Installing and configuring local and network printers
  • Software installation
  • Installation of internet routers with integrated telephone system
Jun 2003 - Apr 2004
11 months
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Johnson Controls Automotive Experience

  • Service engineer
  • Setting up, starting and monitoring unattended client installations with SCCM and PXE boot
  • Installation of additional software after license review
  • Delivering and installing hardware (PCs, notebooks, monitors, printers, etc.)
  • Performing IMACD activities for IT end devices and related tasks (e.g., network patching, desk cabling, etc.)
  • Co-responsible for delivering IT services according to agreed service level agreements
Nov 2001 - Jun 2003
1 year 8 months
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Sony Ericsson Mobile Communications

  • Service engineer
  • Responsible for hardware and software asset management and maintenance at the Düsseldorf site
  • Execution and processing of incoming incidents
  • Responsible for changing backup tapes
  • Co-responsible for delivering IT services according to agreed service level agreements
Aug 2001 - Nov 2001
4 months
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Bankhaus Sal. Oppenheim Köln

  • Rollout technician
  • Conversion of network cabling from Token Ring Type 1 to Ethernet throughout the bank building
  • Upgrading hardware (printers, computers and other network end devices) from Token Ring to Ethernet
Sep 1999 - Aug 2008
9 years
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A&O Systems + Services Germany GmbH (formerly EDS, Systematics and Memorex Systemhaus)

Vodafone Düsseldorf Seestern (03/2006 - 08/2008)

  • Service engineer
  • 1st and 2nd level support
  • Categorization and prioritization of incidents
  • Installation, configuration and troubleshooting of clients under Windows XP
  • Unattended client installation with Netinstall and other installation methods (PXE boot)
  • IMAC hardware handling and installation (PCs, notebooks, monitors, printers, etc.)
  • Coordination of external service technicians
  • Co-responsible for delivering IT services according to agreed service level agreements
  • Coordination and execution of hardware and software rollouts
  • Co-responsible for asset maintenance in the customer's configuration management database
  • Co-responsible for compliance with license requirements and software asset management
  • Monitoring manufacturer warranty processing and ensuring compliance with customer requirements

SKF Sealing Solutions GmbH (03/2005 - 08/2008)

  • Onsite support relief and holiday cover
  • Execution and processing of incoming incidents
  • Installation, configuration and delivery of various hardware and software (Win2000 and WinXP)
  • Responsible for changing backup tapes
  • Co-responsible for delivering IT services according to agreed service level agreements
  • Compliance with license rights according to customer requirements and existing licenses

Georg Fischer Automotive (04/2006 - 08/2008)

  • Service desk and onsite support relief and holiday cover
  • Installation, configuration and delivery of various hardware and software
  • 1st and 2nd level support
  • Execution and processing of incoming incidents
  • Editing Robocopy scripts for data backup
  • Co-responsible for delivering IT services according to agreed service level agreements

WAZ (03/2007 - 08/2008)

  • Service desk and onsite support relief and holiday cover
  • Execution and processing of incoming incidents
  • Co-responsible for delivering IT services according to agreed service level agreements

Gothaer Versicherung (04/2004 - 03/2006)

  • Service engineer
  • Installation, configuration and delivery of hardware and software
  • 1st and 2nd level support
  • New installations with SCCM and PXE boot
  • Performing IMACD activities for IT end devices and related tasks (e.g., network patching, desk cabling, etc.)
  • Planning and executing relocations
  • Rollout coordination and sub-project management for a Germany-wide hardware rollout
  • Participating in building a new software asset database to determine required software licenses
Sep 1999 - Aug 2001
2 years
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Mannesmann D2 Mobilfunk Shops

  • Service engineer
  • Support of D2 shops across the NRW region
  • Execution and processing of incoming incidents
  • Installation, configuration and delivery of hardware and software
  • Installation of shop clients and servers with Win2000, WinXP and Win2000 Server
  • Co-responsible for delivering IT services according to agreed service level agreements
Jan 1998 - May 1999
5 months

Field service technician

Xerox GmbH

Sep 1995 - Jan 1999
3 years 5 months

Communication electronics technician – information technology specialization

Xerox GmbH

Sep 1983 - Jul 1986
2 years 11 months
Germany

Machine fitter

Benz & Hilgers GmbH

Languages

German
Native
English
Advanced

Education

Sep 1995 - Jan 1999

Xerox GmbH

Communication electronics technician, information technology specialization · Germany

Sep 1983 - Jul 1986

Benz & Hilgers GmbH, subsidiary of Rheinmetall AG

Machine fitter · Germany

Certifications & licenses

Laser safety officer