Development:

  • Development and maintenance of a web based rental system and the interface to the related ERP system (Linux, Apache, MySQL, PHP, Perl, SOAP, DHTMLX)
  • Development and maintenance of a web based calendar system (Resource and service engineer disposition, Linux, Apache, MySQL, PHP, Perl, SOAP, DHTMLX)
  • Development and maintenance of a web based stock inventory system and the interface to the related ERP system (Linux, Apache, MySQL, PHP, Perl, SOAP, DHTMLX)
  • Development and maintenance of a B2B Webshop and the interface to the related ERP system (Linux, Apache, MySQL, PHP, Perl, SOAP, DHTMLX)

Network management:

  • WAN-Connection of multiple branches with their central office (Cisco-Components and other manufacturers)
  • Network-Administration of a large company network (> 2.000 Hosts)
  • Planning and implementation of a NAS-Backup-Concept (Synology NAS over multiple buildings)
  • Restructuring a existing network with new Ubiquiti components and implementing a 10Gbit/s backbone with fibre optics (over multiple buildings, SD-LAN, Ubiquiti, Unifi)
  • WLAN installation over a complete company site with several cells as well as a public guest Wifi with associated captive portal (SD-LAN, Ubiquiti, Unifi)
  • VPN and firewall implementation (with reverse proxy for web- and intranet-systems, Linux, Nginx, Ubiquiti) 
  • Administration of a DMZ with linux gateways and firewall (Linux)
  • Connecting multiple sites via VPN (SD-WAN, Ubiquiti, Unifi)
  • Implementation of IBM NetView as a Network-Management-Platform (IBM / Tivoli Netview, RS/6000, AIX)
  • Troubleshooting / Analysis of network problems with TCPDump and Wireshark (Linux, Windows)

Server management:

  • Installation of an Apple MDM Server and its connection to the Apple Business Manager (Mac OS X, Apple Profile Manager, Apple DEP, Apple Business Manager)
  • Planning and implementation of a server virtualization based on VMWare vSphere and Supermicro (Supermicro, VMWare V-Sphere / ESXi, Linux, Windows)
  • Installation and maintenance of a mail server and mail archive system (Linux, Mailcow, Docker, Postfix, etc.)
  • Implementation of IBM Tivoli as a Server-Management-System and IBM Netview as a Netzwerk-Management-System (IBM / Tivoli Netview, RS/6000, AIX)
  • Development of an independent System-Management-System for several automations such as data distribution and update installations (Linux, Windows, MySQL, Perl, PHP, Javascript)
  • Installation and maintenance of a Windows Terminal Server environment. (Windows Terminal Server)

Other Projects:

  • Implementation of a VoIP telephone system (Starface Appliance)
  • Migration of a VoIP telephone system to a virtualized server (Starface, VMWare V-Sphere)
  • Switch to a new ERP System (TOPIX) and switching all clients from Windows to Apple Mac OS
  • Implementation of a VoIP telephone system (Octopus Netphone)