| IEEE SSCI 2013 Symposium Series on Computational Intelligence, Workshop on Organic Computing | April 2013, Singapore | Program Committee |
| 3rd Workshop Trustworthy Self-Organizing Systems (TSOS), Paris, tsos.isse.de, Affiliated to PST 2012, Tenth Annual Conference on Privacy, Security and Trust | Paris, July 16, 2012 | General Chair |
| 4th International Conference on Agents and Artificial Intelligence (ICAART 2012) | Vilamoura, Portugal, February 2012 | Program Committee |
| Wokshop Trustworthy Self-Organizing Systems (TSOS) at the 5th IEEE Conference on Self-Adaptive and Self-Organizing Systems 2011 | October 3, 2011, Ann Arbor | General Chair |
| 8th International Conference on Autonomic and Trusted Computing (ATC-11) | September 1-4, 2011, Banff, Canada | Honorary Chair |
| 7th International Conference on Autonomic and Trusted Computing (ATC-10) | October 26 – 29, 2010, Xi’an, China | Honorary Chair |
| 23rd International Conference on Architecture of Computing Systems (ARCS’10) | February 2010, Hannover | General Chair |
| The 6th International Conference on Autonomic and Trusted Computing (ATC-09) | July 2009, Brisbane (Australia) | Advisory Committee Chair, Panel Chair |
| Wokshop Trustworthy Self-Organizing Systems (TSOS) at the 4th IEEE Conference on Self-Adaptive and Self-Organizing Systems 2010 | 27.9. - 1.10.2010, Budapest | General Chair |
| 22nd International Conference on Architecture of Computing Systems (ARCS’09) | 10. – 13.3. 2009, Delft | General Co-Chair |
| The 5th International Conference on Autonomic and Trusted Computing (ATC-08) | 2008, Oslo | Honorary Chair |
| 8th German Workshop on Artificial Life (GWAL-8) | Juli 2008, Leipzig | Program Committee |
| 21st International Conference on Architecture of Computing Systems (ARCS’08) | 25. – 28.2.2008, Dresden | Program Committee |
| Cyberworlds 2007 | 24.-26.10.07, Hannover | Program Committee |
| The 4th International Conference on Autonomic and Trusted Computing (ATC-07) | 2007, Hongkong, China | General Chair |
| 20th International Conference on Architecture of Computing Systems (ARCS’07) | 2007, Zürich, Schweiz | Program Committee |
| Workshop Selbstorganisierende, Adaptive, Kontextsensitive verteilte Systeme (SAKS 2007) | GI/ITG-Tagung Kommunikation in Verteilten Systemen, 2007, Bern, Schweiz | Program Committee |
| Workshop Organic Computing - Status and Outlook | GI-Jahrestagung, 2006, Dresden | Organizing Committee |
| The 3rd International Conference on Autonomic and Trusted Computing (ATC-06) | 2006, Wuhan, China | Program Committee |
| IFIP Conference on Biologically Inspired Cooperative Computing (BICC 2006) | 2006, Santiago, Chile | Program Committee |
| 7th German Workshop on Artificial Life (GWAL-7) | 2006, Jena | Program Committee |
| 19th International Conference on Architecture of Computing Systems (ARCS’06) | 2006, Frankfurt | Program Committee |
| 5th International Workshop on distributed Auto-adaptive and Reconfigurable Systes (DARES 2005) | 2005, Columbus, Ohio, USA | Program Committee |
| 18th International Conference on Architecture of Computing Systems (ARCS’05) | 2005, Innsbruck, Österreich | Program Committee |
| Workshop on Organic Computing | GI-Jahrestagung, 2004, Ulm | Organizing Committee |
| 17th International Conference on Architecture of Computing Systems (ARCS’04) | 2004, Augsburg | Program Chair |
| 16th International Conference on Architecture of Computing Systems (ARCS’02) | 2002, Karlsruhe | Program Committee |
| 5th German Workshop on Artificial Life (GWAL-5) | 2002, Lübeck | Program Committee |
| 15th GI/ITG-Fachtagung Architektur von Rechensystemen (ARCS'99) | 1999, Jena | Program Committee |
| 3rd German Workshop on Artificial Life (GWAL'98) | 1998, Bochum | Program Committee |
| 2nd German Workshop on Artificial Life (GWAL'97) | 1997, Dortmund | Program Committee |
| 14th GI/ITG-Fachtagung Architektur von Rechensystemen (ARCS'97) | 1997, Rostock | Program Committee |
| Arbeitsplatz-Rechensysteme APS | Fachtagung der GI/itg-Fachgruppe APS 95, 1995, Hannover | General chair |
