General Chair, 9th International Conference on Evolvable Systems: From Biology to Hardware (ICES 2010), York, UK, September 2010.

Technical Chair, 2009 IEEE Congress on Evolutionary Computation (CEC 2009), Trondheim, Norway, May 2009.

Publicity Chair, 1st International Conference on Nano-Networks (Nano-Net 2006), Lausanne, Switzerland, September 2006.

Program Co-Chair, Program Committee, 6th International Conference on Evolvable Systems: From Biology to Hardware (ICES 2005), Barcelona, Spain, September 2005.

Organizing committee, 5th International Workshop on Information Processing in Cells and Tissues (IPCAT 2003), Lausanne, Switzerland, September 2003.

Organizing committee, Turing Day: Computing science 90 years from the birth of Alan M. Turing, Lausanne, Switzerland, June 2002.

Program chair, Von Neumann day: Biological inspiration in computer science 40 years from the death of John von Neumann, Lausanne, Switzerland, July 1997.

Keynote Speaker, 5th IEEE Southern Programmable Logic Conference, Sao Carlos, Brazil, April 2009.

Keynote Speaker, 7th International Workshop on Computer Architecture for Machine Perception (CAMP05), Palermo, Italy, July 2005.

Keynote Speaker, 4th Health and Textile International Forum 9Tessile e Salute), Biella, Italy, March 2004

Keynote Speaker, 6th Int. Work-Conf. on Artificial and Natural Neural Networks (IWANN2001), Granada, Spain, June 13-15, 2001.

Technical committee, IEEE World Congress on Computational Intelligence (WCCI 2008), Hong-Kong, June 2008.

Program committee, IV Southern Conference on Programmable Logic (SPL 2008), Bariloche, Argentina, March 2008.

Program committee, 8th Intl. Conf. on Evolvable Systems: From Biology to Hardware (ICES 2008), Prague, Czech Republic, September 2008.

Program committee, Evolvable Hardware track,Genetic and Evolutionary Computation Conference (GECCO-2008), Atlanta, USA, July 2008.

Program committee, Intl. Conf. on Bio-inspired Systems and Signal Processing (BIOSIGNALS 2008), Funchal, Portugal, January 2008.

Program committee, ECSIS Symposium on Bio-inspired, Learning, and Intelligent Systems for Security (BLISS 2008), Edinburgh, UK, August 2008.

Technical program committee, 2nd Intl. Conf. on Bio-Inspired Models of Network, Information, and Computing Systems (BIONETICS 2008), Awaji Island, Japan, November 2008.

Program committee, 8th International Conference on Cellular Automata for Research and Industry (ACRI2008), Yokohama, Japan, September 2008.

Program committee, NASA/ESA Conference on Adaptive Hardware and Systems(AHS-2008), Noordwijk, The Netherlands, June 2008.

Programming committee, IEEE Workshop on Evolvable & Adaptive Hardware (WEAH 2007), Honolulu, USA, April 2007.

Program committee, 7th Intl. Workshop on Information Processing in Cells and Tissues (IPCAT07), Oxford, UK, August 2007.

Program committee, 7th Intl. Conf. on Evolvable Systems: From Biology to Hardware (ICES 2007), Wuhan, China, September 2007.

Program committee, IEEE Congress on Evolutionary Computation (CEC 2007), Singapore, September 2007.

Program committee, ECSIS Symposium on Bio-inspired, Learning, and Intelligent Systems for Security (BLISS 2007), Edinburgh, UK, August 2007.

Program committee, 2nd Intl. Conf. on Bio-Inspired Models of Network, Information, and Computing Systems (BIONETICS 2007), Budapest, Hungary, December 2007.

Program committee, NASA/ESA Conference on Adaptive Hardware and Systems(AHS-2007), Edinburgh, UK, August 2007.

Scientific committee, Modelling of Complex Systems by Cellular Automata (MCSCA 2006) - International Conference on Computational Science (ICCS 2006), Reading, UK, May 2006.

Program committee, Evolvable Hardware track,Genetic and Evolutionary Computation Conference (GECCO-2006), Seattle, USA, July 2006.

Program committee, 2nd Int. Workshop on Biologically Inspired Approaches to Advanced Information Technology (BioADIT 2006), Osaka, Japan, January 2006.

Program committee, First NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2006), Istanbul, Turkey, June 2006.

Scientific committee, 7th Int. Conf. on Cellular Automata for Research and Industry (ACRI 2006), Perpignan, France, September 2006.

Scientific committee, Modelling of Complex Systems by Cellular Automata 2005 (MCSCA 2005) - Intl. Conf. on Computational Science (ICCS 2005), Atlanta, USA, May 2005.

Program committee, International Congress on Computational Intelligence(ICCI 2005), Monteria, Colombia, August 2005.

Program committee, Evolvable Hardware track,Genetic and Evolutionary Computation Conference (GECCO-2005), Washington, DC, June 2005.

Program Committee, 8th European Conference on Artificial Life (ECAL 2005), Canterbury, England, September 2005.

Session Chair, 2005 NASA/DoD Conference on Evolvable Hardware (EH-2005), Washington, DC, July 2005.

Program Committee, 6th International Workshop on Information Processing in Cells and Tissues (IPCAT 2005), York, England, September 2005.

Reviewer, Genetic and Evolutionary Computation Conference (GECCO-2004), Seattle, WA, June 2004

Scientific Committee, 6th Int. Conf. on Cellular Automata for Research and Industry (ACRI 2004), Amsterdam, NL, Oct. 2004

Session Chair, Panelist, 2004 NASA/DoD Conference on Evolvable Hardware (EH-2004), Seattle, WA, July 2004.

Program Committee, Session Chair, 1st Int. Workshop on Biologically Inspired Approaches to Advanced Information Technology (BioADIT04), Lausanne, 2004.

Program Committee, Genetic and Evolutionary Computation Conference (GECCO 2003), Chicago, IL, July 2003.

Session Chair, Panelist, 2003 NASA/DoD Conference on Evolvable Hardware (EH-2003), Chicago, IL, July 2003.

Program Committee, Session Chair, 5th International Conference on Evolvable Systems: From Biology to Hardware (ICES 2003), Trondheim, Norway, March 2003.

Program Committee, 5th International Conference on Cellular Automata for Research and Industry (ACRI 2002), Geneva, Switzerland, October 2002.

Session Chair, NASA/DoD Workshop on Evolvable Hardware (EH2002), Alexandria, VA, July 2002.

Program Committee, Genetic and Evolutionary Computation Conference (GECCO 2002), New York, NY, July 2002.

Program Committee, 4th International Conference on Evolvable Systems: From Biology to Hardware (ICES 2001), Tokyo, October 2001.

Reviewer, Complex Adaptive Systems initiative, Future and Emerging Technologies Programme, EU, 2007-2008.

Reviewer, Organic Computing thematic priority program, German Research Council, Bonn, Germany, 2005-2009.

Reviewer, Georgian National Science Foundation (GNSF), second call, August 2007.

Chair, Staff Activities and Welfare ad-hoc group, Dept. of Electronics, University of York.

Evaluator, Princeton University Admissions, Princeton, NJ.

Member, Research Commission, School of Computer and Communication Sciences, Swiss Federal Institute of Technology at Lausanne (EPFL), Lausanne, Switzerland.

Member, Section Council, Computer Science Section, Swiss Federal Institute of Technology at Lausanne (EPFL), Lausanne, Switzerland.