... this site

This website is supposed to collect documentation of non-daily tasks, to serve as a dump for projects and as a place to possibly discuss ideas for new projects. Also, its a collection of sysadmin tricks and all those nifty open source projects that catch my eyes on the internet.

The major incentive for starting this site is my bad memory. I have forgotten more nice tricks and hints than I will ever remember to write down. Therefore, I was urged to start at some point.

Some articles might seem trivial and some topics may already be documented elsewhere. Yet, I still put them here so I don't have to search for them in case of recurring and future needs.

For direct contact you are warmly welcome to drop me a line at .


... my academic background

A second reason is to have a place on the net where I can share my previous academic research work so that it won't go to waste and possibly help or inspire others. It follows in chronological order:


- Book:
The Strategic Value of ICT for Swedish Business Leadership: A comprehensive Survey on the contemporary State of Mind of Swedish ICT Decision Makers
Paperback: 196 pages, Language: English
Publisher: VDM Verlag Dr. Müller (May 3, 2011)
ISBN-10: 3639352718, ISBN-13: 978-3639352719

- Book:
Vertrauenskultur im Internet: Eine Bestandsaufnahme am Beispiel von Google Street View
Paperback: 112 pages, Language: German
Publisher: VDM Verlag Dr. Müller (April 15, 2011)
ISBN-10: 3639350464, ISBN-13: 978-3639350463


- Magazine article:
Whistleblowing per Gesetz – Informationsbehandlung im geplanten Gesetz zum Beschäftigtendatenschutz
c’t Magazin für Computertechnik
Nr. 21, 2010, S. 44


- Magazine article:
Lauschen auf Schwedisch – Die wechselvolle Geschichte des FRA-Gesetzes
c’t Magazin für Computertechnik
Nr. 2, 2009, S. 136ff


- Student paper on German IT-law:
Haftung des DSL-Anschlussinhabers für Urheberrechtsverletzungen (Presentation)
Technische Universität Darmstadt
May 2008


+ Scientific research paper:
On Securing Unix Systems with Smart Cards (Presentation)
D. große Osterhues, A. Wiesmaier, R. Araújo, and M. Lippert
4th International Conference on Applied Cryptography and Network Security (ACNS ’06)


... my professional work

My moderate experience stems from my work in the following projects and companies:

- *09/2014-today:*
Portfolio Manager at [DB Systel GmbH](http://www.dbsystel.de), Frankfurt am Main

- *01/2013-08/2014:*
Supply Manager (CIO) at [DB Systel GmbH](http://www.dbsystel.de), Frankfurt am Main

- *02/2007-today:*
Technical Advisor of [Hans-Peter Mayer, Member of European Parliament](http://www.europa-mayer.de), Brussels/Vechta

- *04/2011-12/2012:*
Technical Product Manager at [DB Systel GmbH](http://www.dbsystel.de), Frankfurt am Main

- *01/2009-03/2011:*
System Administrator at [Momax GmbH](http://www.momax-gmbh.de), Darmstadt

- *09/2007-03/2011:*
System Administrator at the [Knowledge Engineering Group of Prof. Johannes Fürnkranz](http://www.ke.tu-darmstadt.de), [Technische Universität Darmstadt](http://www.tu-darmstadt.de)

- *06/2002-03/2011:*
Supervisor of IT of [law firm Brisch](http://www.darmstadtanwalt.de), Darmstadt

- *06/2007-04/2009:*
System Administrator of Lasslop & Sitzmann Ltd., Hamburg

- *06/2002-03/2011:*
Process Analyst in project at [Schenck Process](http://www.schenckprocess.com), Darmstadt

- *10/2007-12/2008:*
Technical Counselor of [STC Consult GmbH](http://www.stc-consult.eu), Leipzig/Magdeburg

- *07/2008-09/2008:*
Intern at the [German Embassy Stockholm, Sweden](http://www.stockholm.diplo.de) with the project "[Deutsche Delikatessen in Schweden](http://www.deutschedelikatessen.se)"

- *05/2007-01/2008:*
Technical Advisor of the International Student Organisation of [Linköpings Universitet](http://www.liu.se)

- *11/2006-02/2007:*
Intern at the [European Parliament](http://www.europarl.europa.eu) in Brussels, Belgium

- *05/2003-07/2005:*
System Administrator at the [Institute for Cryptography & Computer Algebra of Prof. Johannes Buchmann](http://www.cdc.informatik.tu-darmstadt.de), [Technische Universität Darmstadt](http://www.tu-darmstadt.de)

- *06/2004-12/2004:*
IT-Supervisor at the Economical Department in the division of Prof. em. Dr. G. Specht (Technology Management and Marketing Group), [Technische Universität Darmstadt](http://www.tu-darmstadt.de)

- *06/2007-09/2010:*
Technical Adviser of [FemaleTouch](http://www.femaletouch.de), Frankfurt/Main

- *03/2002-07/2003:*
IT-Supervisor at law firm Kreickenbaum & Mayer, Darmstadt


... my partners in crime

- **Volker Sauer:**
Open Source strategy and architecture consulting for computing centers

- **Daniel Sitzmann:**
Professional web development made in Hamburg