Holger Lorenz

Independent specialist in PBX 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
  • Advising on the quality assurance process
  • Conducting problem reviews and tracking related actions and implementation
  • Identifying and documenting ongoing process improvements/optimization potentials
  • Handling tickets in e-mobility, charging stations and wall boxes
  • Identifying and creating solutions for various inquiries and malfunctions
  • Contracting external service providers to repair charging stations and wall boxes
  • Correcting POI data by finding exact locations of charging stations
  • Providing technical support to foreign technicians, mainly in English
  • Software used: ICON, Salesforce, eOperate
Nov 2015 - Present
9 years 9 months

Independent specialist in PBX installation and communication technology

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

Used technologies:

  • PBX systems by Panasonic, Tiptel, Auerswald, Siemens, Agfeo and others
  • 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 via SCCM, Robocopy, etc.
Mar 2015 - Mar 2015
1 month
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Dorma

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

Trade, crafts 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 subproject 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 the customer forecast
  • Adapting the project’s rollout tool
  • Designing and maintaining the software and hardware matrix
  • Working with order management on new orders
  • Europe-wide rollout planning in English (e.g. UK, Spain, Poland)
  • Training and support for customers on the rollout tool
Jun 2012 - Jan 2013
8 months
Remote
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AUMA Riester GmbH & Co. KG

  • Contact and remote support / phone support for international sites (English)
  • Assistance with 1st, 2nd and partly 3rd level PC support (Windows 7/XP)
  • Distributing data to international sites using Robocopy
  • Resolving issues with IT end devices
  • Lync client installation and configuration and user instruction on its functions
  • 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 specialized 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 on Windows 2003
  • Hardware installation and maintenance
Aug 2011 - Nov 2011
4 months
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RWE AG Essen

  • Project support in license management
  • Reviewing and researching current/required software versions, data sources, license types, gathering information and providing sources
Sep 2010 - Dec 2014
4 years 4 months
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Innere Mission Neviges GmbH

  • Maintenance of the nurse call system and telephone systems in Heiligenhaus, Velbert and Velbert-Neviges
  • On-call duty for the nurse call system
  • Configuring and maintaining the light call and alarm server for communication with the telephone system for room and emergency calls
  • Configuring, installing and repairing electronic parts of the nurse call system
  • Configuring telephone systems:
  • Setting up or replacing mobile phones
  • Setting up call forwards
  • Configuring shared phone numbers
Jun 2010 - Aug 2011
1 year 3 months
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Scriptus Laser Technologie GmbH

  • Supporting Windows 2003 Server
  • Managing and creating 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 XP
  • Installing MS Office
  • Installing additional software after license checks
  • Data recovery after virus or malware infection
  • Advising on network backups
  • Virus and malware prevention 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)
  • Setting up and configuring ERP and invoicing software
  • Installing Kärcher spare parts software
  • Installing MS Office
  • Installing internet routers with integrated telephone system
  • Installing additional software after license checks
Sep 2009 - Present
15 years 11 months

IT service provider

  • Installing and delivering hardware (PCs, notebooks, monitors, printers, etc.) to customers
  • Installing and setting up local and network printers
  • Software installation
  • Installing 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
  • Installing additional software after license checks
  • Delivering and installing hardware (PCs, notebooks, monitors, printers, etc.)
  • Performing IMACD tasks for IT devices and related work (e.g. network patching, desk cabling, etc.)
  • Co-responsible for providing IT services according to agreed SLAs
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
  • Handling incoming incidents
  • Responsible for changing backup tapes
  • Co-responsible for providing IT services according to agreed SLAs
Aug 2001 - Nov 2001
4 months
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Bankhaus Sal. Oppenheim Köln

  • Rollout technician
  • Converting network cabling from Token Ring Type 1 to Ethernet throughout the bank
  • Upgrading hardware (printers, PCs and other network 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
  • Installing, configuring and troubleshooting Windows XP clients
  • Unattended client installations with Netinstall and other methods (PXE boot)
  • IMAC tasks and hardware installation (PCs, notebooks, monitors, printers, etc.)
  • Managing and coordinating external service technicians
  • Co-responsible for providing IT services according to agreed SLAs
  • Coordinating and executing hardware and software rollouts
  • Co-responsible for asset maintenance in the customer’s CMDB
  • Co-responsible for license compliance and software asset management
  • Monitoring warranty processes and ensuring compliance with customer requirements

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

  • Onsite support backup and vacation cover
  • Handling incoming incidents
  • Installing, configuring and delivering various hardware and software (Win2000 and XP)
  • Responsible for changing backup tapes
  • Co-responsible for providing IT services according to agreed SLAs
  • Ensuring license compliance per customer requirements

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

  • Service desk and onsite support backup and vacation cover
  • Installing, configuring and delivering various hardware and software
  • 1st and 2nd level support
  • Handling incoming incidents
  • Creating and editing Robocopy scripts for data backup
  • Co-responsible for providing IT services according to agreed SLAs

WAZ (03/2007 - 08/2008):

  • Service desk and onsite support backup and vacation cover
  • Handling incoming incidents
  • Co-responsible for providing IT services according to agreed SLAs

Gothaer Versicherung (04/2004 - 03/2006):

  • Service engineer
  • Installing, configuring and delivering hardware and software
  • 1st and 2nd level support
  • New installations with SCCM and PXE boot
  • Performing IMACD tasks for IT devices and related work (e.g. network patching, desk cabling, etc.)
  • Planning and executing office moves
  • Rollout coordination and subproject management for a nationwide hardware rollout
  • Contributing to the development of 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
  • Supporting D2 shops across North Rhine-Westphalia
  • Handling incoming incidents
  • Installing, configuring and delivering hardware and software
  • Installing shop clients and servers with Win2000, XP and Win2000 Server
  • Co-responsible for providing IT services according to agreed SLAs
Jan 1999 - May 1999
5 months

Field service technician

Xerox GmbH

Sep 1995 - Jan 1999
3 years 5 months

Communications electronics technician – IT specialization

Xerox GmbH

Sep 1983 - Jul 1986
2 years 11 months
Germany

Machinist

Benz & Hilgers GmbH

Languages
German
Native
English
Advanced
Education
Sep 1995 - Jan 1999

Xerox GmbH

Communications electronics technician, IT specialization · Germany

Sep 1983 - Jul 1986

Benz & Hilgers GmbH, subsidiary of Rheinmetall AG

Machinist · Germany

Certifications & licenses

Laser safety officer

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