In Theory


My current research activities and the subject of my doctoral theses face the combination of the following areas in terms of realtime information retrieval:

  • Information retrieval
  • Context awareness
  • Information search process
  • Collective intelligence / crowdsourcing
  • Recommender systems


Lectured courses and seminars within the scope of my activities as research assistant at University of Duisburg-Essen as well as in the scope as freelancer:

  • Paradigms and Concepts of Software Development I (PKS1)
  • Paradigms and Concepts of Software Development II (PKS2)
  • Advanced Website Engineering
  • Modern Software Development
  • Software Development in Practice (PSE)
  • Bachelor/Master Projects
  • Mentoring of Diploma/Bachelor/Master Thesis

In Practice

Selection of software development projects:

Project manager

  • - current research project
  • Donation and petition management für non profit organization Lichtblicke e.V.
  • Content Management System for wholesale (wood)
  • Patient Relationship Management
  • Web application for clinical surveys


  • Mobile iPad web application for product line presentation
  • Web application for clinical surveys
  • Rich client application for design and accomplishment of clinical surveys
  • iPhone application for information transfer (iOS 5, REST)
  • Web based reporting (intranet)
  • Web configurator for elevators and escalators
  • Web application for Active Directory management
  • Transformation server for e-catalogs (JSP, XML, XSL/T)

Web designer

  •, current research project
  •, this website (ASP.NET)
  • Holz Derks GmBH, typo3 cms system for wholesale (wood), concept/design/installation
  • Faculty WiWi, layout for typo3 content management system
  • Mercator School of Management, typo3 template for a web portal
  • Multi Conference Information Systems 2004, conference website including backoffice area (ASP.NET)