About me

I finished my education at the Max-Planck-Institut für Informatik at Saarbrücken. The main topics of my studies were complexity theory and algorithmic geometry. The title of my diploma thesis is "An Implementation of an Algorithm for Convex Hulls". There I got to know (and use ;-) various programming languages (C, C++, Pascal, Java, different assembler languages), especially on Sparc-Clusters under Solaris and SunOS.
Through my interest in networking and the internet I aquired a great knowledge in this, especially about Cisco routers, but also other manufacturers, and the used network protocols, procedures, and conventions. As an adminstrator I also know various programming languages (perl, bash, php, C, C++, java, etc.)
In my current position I am responsible as an internet expert for the network and system infrastructure. This starts at planning and building and spans security analysis as well as survaillance, maintainance, and documentation. Amongst other things I installed a comprehensive and proactive monitoring system and took responsibility for external connections (with Ripe, peering partners and BGP-configuration). Also the network structuring and the reliable operation belong to my duties. With this I gained much expirience in planning and building high capacity and failsafe networks and servers. Coordination with developers in various projects is part of my task as well.
Privately I work on the m68k-Port, iPaq, and ppc port of Linux, where I use a slightly modified Amiga 4000 and Apple iBook. I also wrote some device drivers for Linux and patches for FreeBSD. You'll find a resume of this below .

	Name:	Jörg Dorchain
	Address:	Harspergerflur 23 D-66740 Saarlouis Germany Phone: +49 6831 892656 E-Mail: joerg@dorchain.net
	Year of Birth:	1971
	Family Status:	married, 2 children
	Nationality:	german, belgian

       German driving licence classes ABCE and car owner

	Education:
	1977 - 1981	Primary School ''Im Alten Kloster'', Saarlouis
	1981 - 1990	Classical Secondary School ''Gymnasium Am Stadtgarten'', Saarlouis
	1990 - August 1996	Studies in Computer Science and Electronic Engineering as subsidiary subject at the ''Universität des Saarlandes'', Saarbrücken
	August 1994:	Practical course at the IT-Deparment of the Ford Motor Company, Saarlouis
	May 2003:	Cisco CCIE Preparation Lab at Dimension Data Learning Solutions, Brussels
	September 2005:	PMI Project Management Professional(PMP) with Prof. Adrian Müller, Zweibrücken
	December 2005:	ITIL Service Management at Centre de Recherche Public Henri Tudor, Luxembourg
	June 2006:	Linux Professional Institute LPIC-2
	Languages:	First Language German, Fluent English, Basic Knowlegde in French
	Former Positions and Employers:
	October 1996 - April 1998	Systemadministrator at Möbel Walther AG, Gründau
	April 1998 - August 1999	System Developer and Consultant at MW-EDV & Electronic GmbH, Saarlouis
	November 1999 - November 2000	Network- and Systemadministrator at ILOS S.A., Grevenmacher
	November 2000 - February 2002	Network- and Systemadministrator at Europe Online Networks S.A., Betzdorf
	March 2002 - November 2003	Internet Expert at Europe Online Investments S.A., Betzdorf
	June 2004 - June 2005	System and Network Consultant at Resolution GmbH, Heusweiler
	July 2005 - June 2008	System and Network Developer, Internet Expert and Consultant at infeurope S.A., Luxembourg
	July 2008 - July 2012	ISHS Projects Change Coordinator at the European Commision, Luxembourg
	July 2012 - ongoing	Senior Systems- and Networkengineer at Catella bank S.A., Luxembourg

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• Using and Installation of:
  • DOS, MacOS, Windows (all Versions), ...
• Programming of:
  • Unix
• Adminstration of:
  • AIX, SunOS, *BSD, Solaris, WindowsNT including MS-Exchange
• Systemdevelopement (Writing own System Extensions):
  • AmigaOS, Linux

  The Points above are each included by the points below.

• Expirience with Hardware of various Systems (RS6000, Amiga, PC, Sparc ...).

• Planning and Configuration of almost everything with modems and serial interfaces (syncronous and asynchronous)
• Planning and Configuration of almost everything with Ethernet (Thick- and Thinethernet, 10-, 100- and 1000 MBit, UTP, LWL, HUBs, Switches, Repeater, Bridges, especially Cisco and HP Network components)
• Expiriences with ATM and TokenRing
• Knowledge in IPX
• Router: Configuration of
  • Linux and FreeBSD (gated, GNU Zebra/Quagga)
  • Cisco IOS-Devices (including OSPF, EIGRP and BGP, NetFlow)
  • Ascend Pipeline
  • Routing strategies (redudancy, cost efficiency, ...)
• Internet:
  • all common protocols, also IPv6
  • UUCP
  • Dial-on-demand-connections and permanent connections
  • all common Internet-Services (DNS, HTTP, SMTP, NNTP, POP3, IMAP, NTP, SNMP, ...)
  • Institutions (Ripe, Registries,...)
• Access configuration via:
  • Analogue and ISDN-Lines
  • Dial up and Leased Lines (currently upto OC-3/STM-1)
  • Dial back up Lines
• Concepts, Building and Maintaining of LANs and WANs, including multicast networks