Member of the Organizing Committee, Conference "Florina 1912-2002: History and Culture", Florina, Greece, 2002/11/08 - 2002/11/10.
Member of the Organizing Committee, 8th Annual Conference on Innovation and Technology in Computer Science Education, Thessaloniki, Greece, 2003/06/30 - 2003/07/02.
Member of the Organizing Committee, 9th Panhellenic Conference on Informatics, Thessaloniki, Greece, 2003/11/21 - 2003/11/23.
Member of the Organizing Committee, 1st Balkan Conference on Informatics, Thessaloniki, Greece, 2003/11/21 - 2003/11/23.
Member of the Organizing Committee, 1st Workshop: Internet and Education, Problems and Prospects, Florina, Greece, 2004/05/16.
Member of the Organizing Committee, 1st Hellenic Postgraduate Students Meeting: Postgraduate Studies and Research in Education, Florina, Greece, 2005/09/30 - 2005/10/02.
Member of the Scientific and Organizing Committee, 5th Hellenic Conference with International Participation: Information and Communication Technologies in Education, Thessaloniki, Greece, 2006/10/05 - 2006/10/08.
Member of the Scientific Committee, Workshop: Broadband Technologies and Applications, Florina, Greece, 2007/02/07.
Member of the Scientific Committee, 4th Panhellenic Conference: Informatics Teaching, Patras, Greece, 2008/03/28 - 2008/03/30.
Member of the Scientific Committee, 3rd Free Libre Open Source Software (FLOSS) Conference, Athens, Greece, 2008/05/27 - 2008/05/28.
Member of the Scientific Committee, 6th Hellenic Conference with International Participation: Information and Communication Technologies in Education, Limassol, Cyprus, 2008/09/25 - 2008/09/28.
Member of the Scientific Committee, 4th Hellenic Conference of Secondary Education Informatics Teachers: Informatics in Education, The Digital School, Serres, Greece, 2010/05/07 - 2010/05/09.
Member of the Organizing Committee, FLOSS Conference 2011: Open Software, Development Opportunity, Thessaloniki, Greece, 2011/05/22.
Member of the Program Committee, Workshop on Technology Enhanced Learning, held in conjunction with the 7th Balkan Conference in Informatics, Craiova, Romania, 2015/09/02 - 2015/09/04.
Member of the Program Committee, 19th Panhellenic Conference on Informatics, Athens, Greece, 2015/10/01 - 2015/10/03.
Member of the Program Committee, 20th Panhellenic Conference on Informatics, Patras, Greece, 2016/11/10 - 2016/11/12.
Member of the Program Committee, 8th Balkan Conference in Informatics, Skopje, 2017/09/20 - 2017/09/23.
Member of the Program Committee, Workshop on Technology Enhanced Learning, held in conjunction with the 8th Balkan Conference in Informatics, Skopje, 2017/09/20 - 2017/09/23.
Member of the Scientific Committee, 3rd International Conference on Business Informatics and Modelling, Online, 2017/10/20 - 2017/10/22.
Member of the Scientific Committee, International University Competition on Entrepreneurship and Innovation (Ennovation), 2010 until now, https://ennovation.gr.
Member of the Organizing Committee, 1st Interdisciplinary Conference: Law and Informatics, Facing the challenges of the digital era, Komotini, Greece, 2018/05/25 - 2018/05/26.
Member of the Program Committee, 22nd Panhellenic Conference on Informatics, Athens, Greece, 2018/11/29 - 2018/12/01.
Member of the Program Committee, 9th Balkan Conference in Informatics, Sofia, Bulgaria, 2019/09/26 - 2019/09/28.
Member of the Program Committee, Workshop on TEL: Technology Enhanced Learning (WoTEL 2019), Sofia, Bulgaria, 2019/09/26 - 2019/09/28.
Member of the Program Committee, 23rd Panhellenic Conference on Informatics, Nicosia, Cyprus, 2019/11/28 - 2019/11/30.
Member of the Technical Program Committee, 2nd International Conference on Computer Communication and the Internet (ICCI 2020), Nagoya, Japan, 2020/06/26 - 2020/06/28.
Member of the Technical Committee, 3rd World Symposium on Communication Engineering (WSCE 2020), Thessaloniki, Greece, 2020/10/09 - 2020/10/11.
Member of the Program Committee, 24th Panhellenic Conference on Informatics, Athens, Greece, 2020/11/20 - 2020/11/22.
Member of the Technical Program Committee, 3rd International Conference on Computer Communication and the Internet (ICCI 2021), Nagoya, Japan, 2021/06/25 - 2021/06/27.
Member of the Program Committee, 25th Panhellenic Conference on Informatics, Volos, Greece, 2021/11/26 - 2021/11/28.
Member of the Technical Program Committee, 4th International Conference on Computer Communication and the Internet (ICCI 2022), Chiba, Japan, 2022/07/01 - 2022/07/03.
Member of the Program Committee, 26th Panhellenic Conference on Informatics, Athens, Greece, 2022/11/25 - 2022/11/27.
Member of the Technical Program Committee, 5th International Conference on Computer Communication and the Internet (ICCI 2023), Fujisawa, Japan, 2023/06/23 - 2023/06/25.
Member of the Program Committee, 6th World Symposium on Communication Engineering (WSCE 2023), Thessaloniki, Greece, 2023/09/27 - 2023/09/29.
Member of the Technical Program Committee, Workshop on Electronics Communication Engineering (WECE 2023), Guilin, China, 2023/10/27 - 2023/10/29.
Member of the Program Committee, 27th Panhellenic Conference on Progress in Computing and Informatics (PCI) with International Participation, Lamia, Greece, 2023/11/24 - 2023/11/26.
Member of the Technical Program Committee, 12th International Conference on Networks, Communication and Computing (ICNCC 2023), Osaka, Japan, 2023/12/15 - 2023/12/17.
Member of the Organizing Committee, 2nd Interdisciplinary Conference: Law and Informatics, Komotini, Greece, 2024/05/24 - 2024/05/25.
Member of the Technical Program Committee, 6th International Conference on Computer Communication and the Internet (ICCI 2024), Tokyo, Japan, 2024/06/14 - 2024/06/16.
Member of the Program Committee, 20th International Conference on Intelligent Tutoring Systems (ITS2024), Thessaloniki, Greece, 2024/06/10 - 2024/06/13.
Member of the Program Committee, 10th Balkan Conference in Informatics, Craiova, Romania, 2024/09/04 - 2024/09/06.
Member of the Technical Program Committee, 6th International Conference on Electronics and Communication Technologies (ECT 2024), Singapore, 2024/07/10 - 2024/07/12.
Member of the Program Committee, 7th World Symposium on Communication Engineering (WSCE 2023), Tokyo, Japan, 2024/09/27 - 2024/09/29.
Member of the Technical Program Committee, 6th International Conference on Information Technology and Computer Communications (ITCC 2024), Singapore, 2024/10/25 - 2024/10/27.
Member of the Program Committee, 28th Panhellenic Conference on Progress in Computing and Informatics (PCI) with International Participation, Athens, Greece, 2024/12/13 - 2024/12/15.
Member of the Technical Program Committee, 6th International Conference on Computing, Networks and Internet of Things (CNIOT 2025), Shanghai, China, 2025/05/23 - 2025/05/25.