Główny organizator konferencji

• The 4th International Conference on Internet and E-Business ICIEB 2024, Olten, Switzerland (hybrid), July 8-10, 2024, Conference Co-Chair
  
• The 5th Edition of POZitive Technologies Conference, Poznań (Poland) November 23, 2023, Program Co-Chair
  
• The 15th International Conference on Theory and Practice of Electronic Governance, Guimaraes (Portugal), October 4-7, 2022, Doctoral Colloquium Chair
  
• The 6th APWeb-WAIM Joint International Conference on Web and Big Data 2022, APWeb-WAIM 2022, Nanjing (China), August 11-13, 2022,  General Co-Chair
  
• The 3rd International Conference on Internet and E-Business ICIEB 2022, on-line, June 10-12, 2022, Conference General Chair
  
• The 5th International Conference e-Business and Internet ICEBI 2021, Singapore, online, October 15-17, 2021, Program Co-Chair
• The 8th International Conference on Management of e-Commerce and e-Government ICMECG 2021, Jeju Island (South Korea), online, July 04-06, 2021, Program Co-Chair
• The 2nd International Conference on Internet and E-Business ICIEB 2021, Barcelona (Spain) June 09-11, 2021, General Chair
• Workshop “Distant teaching and learning – from elementary school through HEI to retirement”at the 29th Annual Conference of the European Access Network (EAN), Poznań (Poland), online, October 4–21, 2020
• The 6th International Conference on Advances in Management Sciences ICAMS 2019, Milan, (Italy) February 13-15, 2019 – Program Co-Chair
• The 3rd International Conference on E-Business and Internet ICEBI 2019, Prague (Czech Republic), April 27-29, 2019 – Program Co-Chair
• The 19th International Conference on Web Information Systems Engineering, Zayed University, Dubai, United Arab Emirates, November 12-15, 2018 – Program Co-Chair
• The 6th The International Conference on Human Side of Service Engineering HSSE 2018 (under Multiconference AHFE umbrella), Orlando (USA), July 21-25, 2018 – Program Co-Chair
• The 7th International Conference on Education and Management Innovation ICEMI 2018, Turin (Italy), February 11-13, 2018 – Program Co-Chair
• The 11th International Conference on Theory and Practice of Electronic Governance ICEGOV 2018, Galway (Ireland), April 4 - 6, 2018 – Doctoral Colloquium Chair, Steering Committee Member
• The 26th IEEE International Conference on Enabling Technologies: Infrastructure for Collaborative Enterprises WETICE 2017, Poznań (Poland), June 21 - 23, 2017, General Chair
• The 5th International Conference on the Human Side of Service Engineering HSSE 2017, Los Angeles (USA), July 17 – 21, 2017; Program Co-Chair
• The 10th International Conference on Theory and Practice of Electronic Governance ICEGOV 2017, New Delhi (India), March 7 - 10, 2017, Co-Chair of Doctoral Colloquium 
• The 4th International Conference on the Human Side of Service Engineering HSSE 2016, Orlando (Florida, USA), July 27 – 31, 2016; Program Co-Chair
• The 17th International Conference on Web Information Systems WISE 2016, Shanghai (China), November 7 - 10, 2016 – Program Committee Co-Chair
• The 16th International Conference on Web Information System Engineering WISE 2015, Miami (Florida, USA), November 1 - 3, 2015 – Program Committee Co-Chair
• The 3rd International Conference on Human Side of Service Engineering HSSE 2015, Las Vegas (Nevada, USA), July 26 - 30, 2015 – Program Co-Chair
• 2nd International Conference on Human Side of Service Engineering HSSE 2014, Kraków (Poland), July 19 - 23, 2014 – Program Co-Chair
• The 47th Hawaii International Conference on System Sciences – E-Government Track, Hilton Waikoloa, Big Island, HI/USA, January 6 - 9, 2014 – Co-Chair of the minitrack on eGOV Education
• The 7th International Conference on Theory and Practice of Electronic Governance „Beyond 2015 – Smart Governance, Smart Development”ICEGOV 2013, Seul (Korea Płd.), October 22 - 25, 2013; Co-chair of the Track 'Smart Governance for Smart Industries”, Member of the Steering and Program Committees.  
• The 14th International Conference on Web Information System Engineering WISE 2013, Nanjing (China), October 13-15, 2013 – Tutorial Co-Chair, Organizing Committee Member
• Conference „Legal and economic aspects of personal data processing”, Poznan (Poland), May 7, 2013, General Co-Chair
• The 6th European Ministerial e-Government Conference and Exhibition eGOV2011PL - Borderless eGovernment Services for Europeans, Poznań, November 17 – 18, 2011 – Program Chair
• Preconference „Innovation for eParticipation”to the 6th European Ministerial e-Government Conference and Exhibition eGOV2011PL – Borderless eGovernment Services for Europeans, Poznań, November 16, 2011 – General Chair
• The 9th International Workshop for Technical, Economic and Legal Aspects of Business Models for Virtual Goods incorporating the 7th International ODRL Workshop, Barcelona (Spain), September 28 – 30, 2011 – General Co-Chair
• The 10th IFIP Conference on e-Business, e-Services and e-Society, I3E 2010, Buenos Aires (Argentina), November 3 – 5, 2010 (Program Committee Co-Chair, Steering Committee Chair)
• The 8th International Workshop for Technical, Economic and Legal Aspects of Business Models for Virtual Goods VG 2010, Namur (Belgium), September 30 – October 1, 2010 – General Co-Chair
• The 30th International Conference on Distributed Computing Systems ICDCS 2010, June 21 – 25, 2010, Genova (Italy) – General Chair
• The 10th International Conference on Web Information Systems Engineering WISE 2009, Poznan (Poland), October 5-7, 2009 – General Chair
• The 2nd International Conference on Theory and Practice of Electronic Governance ICEGOV 2008, Cairo (Egypt), 1-4 December 2008, General Co-Chair
• The 6th International Workshop for Technical, Economic and Legal Aspects of Business Models for Virtual Goods incorporating the 4th International ODRL Workshop, Poznan (Poland), October 16-18, 2008 – General Co-Chair
• National Conference on European Chance for Polish Young People, Warsaw, October 26th, 2006 – Program Chair
• 5th IFIP Conference on e-Commerce, e-Business, and e-Government I3E'2005, Poznan, Poland, October 26-28, 2005 – General Co-Chair
• The Symposium on the Applications and the Internet SAINT 2005, Trento (Italy), February 2005 – Program Chair
• The International Workshop on Theory and Applications of E-Negotiations of Contracts TAEN 2004, in conjunction with BIS 2004, Poznan, Poland, April 2004 General Co-Chair
• Conference „A strategy for building and developing an information society in the Greater Poland region”, December 3, 2004, General Chair
• Workshop on Cultural Heritage Applications of Virtual Reality, WEB 3D Conference, Saint Malo, France, March 2003 – Program Co-Chair
• The 1st IFIP Workshop on Internet Technologies, Applications and Societal Impact WITASI'02, Wroclaw, Poland, October 2002 – General Co-Chair
• Workshop on Business Applications of Virtual Reality BAVR'02, Poznan, Poland, April 2002 – General Co-Chair
• Symposium on the Applications and the Internet SAINT'2002, Nara, Japan, January 2002 – Co-Chair of the track Services for Information Society and e-Economy
• Conference „Electronic business as an opportunity for small and medium size enterprises”within a framework of the fair INFOSYSTEM 2001, Poznań, April 2001 – General-Chair
• Conference „Impact of ICT on social development”, United Nations Development Programme, Warszawa, May 2001 – program Chair
• Symposium on the Applications and the Internet SAINT'2001, San Diego, USA, January 2001 – Co-Chair of the track Electronic Business
• National conference „e-Economy in Poland – chances and challenges”sponsored by INTEL and Microsoft, Poznań, November 8, 2000 – General Chair
• Workshop on Information Technologies for Electronic Commerce ITeC'99, Florence, Italy, September 1999 – General Chair
• Conference on Integration of Telecommunications and Cable Television – Interactive Television, Warsaw, Poland, October 1996 – General Co-Chair
• 7th International Conference on Computing and Information, ICCI'95, Trent, Ontario, Canada, July 1995 – Stream Chair
• International Conference on Distributed Computing Systems ICDCS '94, Poznan, Poland, June 1994 – General Co-Chair
• Conference on Distributed Computing Systems ICDCS '93 Pittsburgh, USA, May 1993 – Program Committee Co-Chair
• International Workshop on Versioning in Database Management Systems, Dagstuhl, Germany, February 1993 – General Co–Chair
• German-Polish-French Workshop on Recent Topics in Databases, Rauischholzhausen, Germany, January 1993 – General Co–Chair
• German-Polish-French Workshop on Databases and Distributed Systems, Rauischholzhausen, Germany, January 1992 – General Co–Chair
• Conference “Teaching Computer Science”, Poznan, Poland, 1986 – Program Committee Co-Chair
• 6th National Conference “Mikroprocesors in education”, Łódź, 1989 – Program Committee Chair
• 5th National Conference “Mikroprocesors in education”, Łódź, 1988 – Program Committee Chair
• 4th National Conference “Mikroprocesors in education”, Łódź, 1987 – Program Committee Chair
• 3rd National Conference “Mikroprocesors in education”, Łódź, 1986 – Program Committee Chair
• 2nd National Conference “Mikroprocesors in education”, Łódź, 1985 – Program Committee Chair
• 1st National Conference “Mikroprocesors in education”, Łódź, 1984 – Program Committee Chair