Personal Details

  • Address: Markelstr. 5, 12163 Berlin, Germany
  • Please use the contact form to send an e-mail


  • Internet and Web experience since 1993
  • More than 9 years of experience as professional software developer
  • 7+ years application development experience with Linux/Apache/MySQL/PHP
  • Maintainer of the Adaptive Website Framework (AWF) Open-Source CMS (2001 - 2007)

Skills summary

  • Languages: PHP, SQL, JavaScript, Perl, (Object) Pascal, Java, Basic, Scheme, x86 Assembler and C/C++ (basic knowledge)
  • Internet/Networking: XHTML, CSS, XML, Unicode, LDAP, ADS, Internet Protocols (TCP/IP, SMTP, HTTP, DHCP,...)
  • Operating Systems: Unix (Linux, FreeBSD and others), Windows, Mac OS X, OS/2, DOS
  • Server and development applications: MySQL, SQL Server, PostgreSQL, Apache, Postfix, Subversion, Perforce, Trac, Zend Studio
  • German as native language; fluent in spoken and written English; basic knowledge of French

Employment and project history

Freelance Software Developer (2006-today)

Liquid Bytes Technologies (2001-2006)

  • Managing Director
  • Responsible for up to 4 freelance contractors so far (depending on the client project)
  • Content Management Systems, Open-Source solutions, Web design and professional Web hosting
  • Clients include the University of Tuebingen, the Department of Trade and Industry (Baden-Wuerttemberg), Connors Communications (NYC, USA), CAPup! GmbH (Duesseldorf) and Objectpark Software (Bonn)
  • Administration of 3-5 Linux Servers (MTA, DNS, Monitoring, MySQL/Apache, LDAP, Firewalls, development of configuration frontend and management scripts)
  • Serveral speeches and presentations for the Rosa Luxemburg Foundation at the European Social Forum 2003 (Paris)

University Hospital Tübingen (2002)

  • System Administrator of the Department of Experimental Radiology
  • Windows 2000 Server, Linux, Active Directory, HTTP Proxy Server, DHCP

science+computing ag (2000-2001)

  • Freelance Software Developer
  • Development of an accounting system for a new ASP product (PostgreSQL, Perl)
  • Redesign and improvement of the public Web site (PHP, MySQL)
  • Development of an intranet portal (Embedded Perl, SQL, MS Access)
  • Reference: Dr. Karsten Gaier (former Marketing and Sales Director) (1999-2001)

  • CTO responsible for a team of 4 developers
  • InterEdu was a European organisation that provided people from all over the world with the information and advice necessary for deciding where to study in Europe
  • Web portal development using Linux, Apache, MySQL and PHP 3
  • Clients included consulting firms like McKinsey & Company
  • Reference: Jens Pruefer (former CEO)

Hoelle und Huettner AG (1998-2000)

  • Freelance Software Developer
  • Almost complete rewrite of the internal project management software (Delphi, HTML, Windows)
  • Custom software development (Delphi, Windows, Robotics, Automation, Documentation)


  • Parlez-vous Zend?, Multilingual Web applications with Zend Framework, PHP Magazin, 5/2007


  • Plat_Forms 2007 took place January 25-26. Plat_forms is a competition in which top-class teams of three programmers compete to implement the same requirements for a web-based system within 30 hours.


Studies in Physics (2003-2006)

  • FU Berlin, Germany
  • Studies included Mathematics and Chemistry

Abitur (A-Levels) (2001)

  • Kepler Gymnasium Tuebingen, Germany
  • Focus on Physics and Mathematics
  • Physics (A), Mathematics (A), Computer Science (A), Ethics (A), German (B)

Interests and Memberships

  • Member of Association for Computing Machinery (ACM), IEEE Standards Association, IEEE Computer Society, Chaos Computer Club and DPG
  • Free Software Foundation Europe Fellow
  • Travel includes visits to Australia, Namibia, Reunion Island and USA
  • Strong interest in photography, nature, cybernetics and radical constructivism