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Dr. Mohammad Hajarian is a Marie Curie Postdoctoral Fellow and Assistant Professor at Universidad Carlos III de Madrid, where he leads the EU-funded ROSNUB project. He is also the CEO and Founder of Gegli (Gohardasht), one of the pioneering social networks he launched in 2003. With over 50 publications, including articles and books, Dr. Hajarian has made significant contributions across disciplines such as Online Social Networks, Gamification, Human-Computer Interaction, Interaction Design, Recommendation Systems, Personalization, User Engagement, Data Science, and User Acquisition. His research currently focuses on developing methods to fight misinformation and mitigate online hostility within social networks. He has taught over 35 courses and supervised numerous graduate and postgraduate theses. His innovative work has been widely adopted in the social media and software industry. He collaborates with fellow researchers through his social network platform to implement and validate cutting-edge methods in real-world environments. He has also participated in several industrial software projects and actively collaborates on various Horizon Europe and industry-driven projects. He frequently serves as a reviewer and editor for leading scientific journals and conferences. He also speaks and presents papers, workshops, and tutorials at major conferences and universities. In recognition of his contributions, Dr. Hajarian has received several prestigious awards and honors. HONORS AND AWARDS Superior graduate 2018 Awarded by Iran’s Elites National Foundation. Superior youth 2018 Awarded by Iran’s Ministry of Interior. Best researcher 2017 Awarded by the Islamic Azad University of Karaj.
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Identification

Personal identification

Full name
Mohammad Hajarian

Citation names

  • Hajarian, Mohammad
  • M Hajarian

Author identifiers

Ciência ID
D016-D8A2-4E6F
ORCID iD
0000-0001-9863-2679
Google Scholar ID
g7Czd14AAAAJ
Researcher Id
AAF-4215-2021
Scopus Author Id
57190214741

Email addresses

  • Mohammad.Hajarian@iscte-iul.pt (Professional)

Telephones

Telephone
  • (+34) 623341899 (Personal)

Addresses

  • 2.2.B.21, Avda de la Universidad 30, 28911, Leganés - Madrid, 28911, Leganés, Madrid, Spain (Professional)

Websites

Knowledge fields

  • Exact Sciences - Computer and Information Sciences

Languages

Language Speaking Reading Writing Listening Peer-review
English Proficiency (C2) Proficiency (C2) Proficiency (C2) Proficiency (C2) Proficiency (C2)
Persian (Mother tongue)
Spanish; Castilian Elementary (A2) Elementary (A2) Elementary (A2) Elementary (A2) Elementary (A2)
Turkish Beginner (A1) Beginner (A1) Beginner (A1) Beginner (A1) Beginner (A1)
Arab Beginner (A1) Beginner (A1) Beginner (A1) Beginner (A1) Beginner (A1)
Education
Degree Classification
2015/09/01 - 2018/06/01
Concluded
 Software Engineering (Doutoramento)
Islamic Azad University Karaj Branch, Iran
2015/09 - 2018/06
Concluded
 Software Engineering (Doktori fokozat (PhD))
Major in Computer
Islamic Azad University Karaj Branch, Iran
"Fuzzy Like Algorithms and their Gamification Framework for Social Networks efficiency" (THESIS/DISSERTATION)
2012/05/01 - 2014/01/01
Concluded
 Software Engineering (Mestrado)
Staffordshire University, United Kingdom
2012/05 - 2014/01
Concluded
 Software Engineering (Masterexamen)
Staffordshire University, United Kingdom
2007/01/01 - 2012/01/01
Concluded
 Software Engineering (Bacharelato)
Payame Noor University, Iran
2007/01 - 2012/01
Concluded
 Software Engineering (Bachelor)
Payame Noor University, Iran
Affiliation

Science

Category
Host institution 		Employer
2024/11 - Current Visiting Researcher (Research) ISCTE-Instituto Universitário de Lisboa, Portugal
ISCTE-Instituto Universitário de Lisboa, Portugal
(...)
2022/01 - 2024/12 Postdoc (Research) Universidad Carlos III de Madrid, Spain
Projects

Grant

Designation Funders
2022/01 - 2024/12 Reputation Metrics and Methods for Gamifying and Regulating Online Social Network Users’ Behaviors (ROSNUB)
801538
 Horizon 2020

Contract

Designation Funders
2021/09 - 2022/01 Algorithms and Frameworks for Regulating Social Networks Users Behavior
420520
Post-doc Fellow
Universidad Carlos III de Madrid
2020/01 - 2020/09 Pervasive and Affordable technologies for Civic Engagement
TIN2016-77690-R
Invited Scientist Fellow
MAINCO
2018 - 2019 Crawler
978-600-491-213-6
Co-Principal Investigator (Co-PI)
Iran Science Elites Federation
Concluded
2015 - 2019 Persia Project
978-600-328-213-1
Co-Principal Investigator (Co-PI)
Iran National Elites Foundation
Outputs

Publications

Book
  1. hajarian, M.. Gamification in social network engineering. 2019.
    Published
  2. hajarian, M.. Collecting data from social networks: methods and applications. Karaj, Iran: Melerd publications. 2019.
    Published
  3. hajarian, M.. A self-study book on C++ programming. 2019.
    Published
  4. hajarian, M.. Designing cross-platform mobile applications using Xamarin. 2019.
    Published
  5. hajarian, M.; Azam Bastanfard. Social network engineering in web 2.0. --, Iran: Melerd publications. 2018.
    Published
  6. hajarian, M.. Developing mobile applications with the android studio. --, Iran: Melerd publications. 2018.
    Published
  7. hajarian, M.. A self-study book on Visual Basic programming. 2018.
    Published
  8. hajarian, M.. Data structures and algorithms with JavaScript. 2017.
    Published
  9. hajarian, M.. C# in one day. 2017.
    Published
  10. hajarian, M.. Training professional mobile application programming using phone gap and jQuery mobile. Sarafraz publications. Sarafraz publications. 2015.
    Published
Book chapter
  1. hajarian, M.; Paloma Diaz; Ignacio Aedo. "Work-in-Progress: The Social Networks Users’ Behavior Change Using Gamified Education and Their Personality". 2023.
    Published • 10.1007/978-3-031-26876-2_92
  2. hajarian, M.. "A Taxonomy of Online Marketing Methods". 2021.
    Published • 10.1108/978-1-80071-264-520211014
Conference paper
  1. Mohammad Hajarian; Paloma Diaz; Ignacio Aedo. "Fun Button Experiment: The Long-Term Effect of Gamification on User Engagement and Behavior". 2023.
    10.1109/apcc60132.2023.10460703
  2. Hajarian, Mohammad. "¿¿¿¿¿ ¿¿ ¿¿¿¿ ¿¿¿¿ ¿¿¿¿¿¿¿¿ ¿¿¿¿ ¿ ¿¿¿¿¿ ¿¿¿¿¿ ¿¿¿¿". 2019.
  3. Hajarian, Mohammad; Azam Bastanfard. ". An Image Enhancement Framework for Low Vision Users of Social Networks". Paper presented in 2nd Conference on Technology in Electrical and Computer Engineering (TEC-2017), 2017.
  4. Hajarian, Mohammad. "Framework for Improving Movement Detection by Implementing Data Mining on Big Data of Internet of Things". 2016.
  5. Hajarian, Mohammad. "Applying Data mining for advertisement in social networks and improving CTR. International Conference on Research in Engineering". 2015.
  6. Hajarian, Mohammad. "A Framework for Improving Web 2.0 Interaction Design. International Conference in New Research of Electronic Engineering and Computer science". 2015.
Journal article
  1. hajarian, M.; Miguel Herrera Carrillo; Paloma Diaz; Ignacio Aedo. "Gamispotify: a gamified social music recommendation system based on users’ personal values". Multimedia Tools and Applications (2025): https://doi.org/10.1007/s11042-024-20588-y.
    Published • 10.1007/s11042-024-20588-y
  2. hajarian, M.; Paloma Diaz; Ignacio Aedo. "Overgamified? An Exploratory Study on Gamification and Crowdsourcing for Fake Accounts Detection in Social Networks". International Journal of Human–Computer Interaction (2024): https://doi.org/10.1080/10447318.2024.2427989.
    Published • 10.1080/10447318.2024.2427989
  3. hajarian, M.. "Evaluating the Impact of Different User Engagement Elements on Software Applications". (2023): https://publons.com/wos-op/publon/71435847/.
    Published • 10.23919/MIPRO57284.2023.10159746
  4. hajarian, M.. "A personalized gamification method for increasing user engagement in social networks". Social Network Analysis and Mining (2019): http://dx.doi.org/10.1007/s13278-019-0589-3.
    Published • 10.1007/s13278-019-0589-3
  5. hajarian, M.. "SNEFL: Social network explicit fuzzy like dataset and its application for Incel detection". Multimedia Tools and Applications (2019):
    Published • 10.1007/s11042-019-08057-3
  6. hajarian, M.. "Introducing fuzzy like in social networks and its effects on advertising profits and human behavior". Computers in Human Behavior 77 (2017): 282-293.
    Published • 10.1016/j.chb.2017.08.046
  7. hajarian, M.. "A Framework for Improving Web 2.0 Interaction Design". Ciência e Natura (2015): http://dx.doi.org/10.5902/2179460x20785.
    Published • 10.5902/2179460x20785
  8. hajarian, M.. "Applying Data mining for advertisement in social networks and improving CTR". Journal of Applied Environment and Biological Sciences 5 12S (2015): 417-420.
    Published • 10.6084/m9.figshare.13668638
  9. hajarian, M.. "Why people use social networks?". International journal of social science & interdisciplinary research (2015): https://figshare.com/articles/journal_contribution/Why_people_use_social_networks_/13668479.
    Published • 10.6084/M9.FIGSHARE.13668479
  10. hajarian, M.. "The role of data mining in revenue of websites". Galaxy international interdisciplinary research journal. (2015): https://figshare.com/articles/journal_contribution/The_role_of_data_mining_in_revenue_of_websites/13668488.
    Published • 10.6084/M9.FIGSHARE.13668488
  11. hajarian, M.. "Improving user satisfaction of websites using data mining". Galaxy international interdisciplinary research journal. (2015): https://figshare.com/articles/journal_contribution/IMPROVING_USER_SATISFACTION_OF_WEBSITES_USING_DATA_MINING/13668464.
    Published • 10.6084/M9.FIGSHARE.13668464
  12. hajarian, M.. "Toward the development of cross-platform mobile applications". Galaxy international interdisciplinary research journal. (2015): https://figshare.com/articles/journal_contribution/Toward_the_development_of_cross-platform_mobile_applications/13668494.
    Published • 10.6084/M9.FIGSHARE.13668494
Activities

Supervision

Thesis Title
Role 		Degree Subject (Type)
Institution / Organization
2024/01/01 - Current High performance webpage recommender system using social big data and gamification
Supervisor of Karam Abdalazize
ISCTE-Instituto Universitário de Lisboa, Portugal
2022/01/01 - 2022/11/01 A Gamification Based Interactive Music Recommendation System
Supervisor of Miguel Herrera Carrillo
 Informatica (Master)
ISCTE-Instituto Universitário de Lisboa, Portugal
2022/01/01 - 2022/01/01 A Gamification Based Interactive Music Recommendation System
Supervisor of Miguel Herrera Carrillo
ISCTE-Instituto Universitário de Lisboa, Portugal
2019/02/01 - 2020/01/01 Incels identification on social networks by analyzing user comments
Supervisor of Zahra Babaloo
ISCTE-Instituto Universitário de Lisboa, Portugal
2019 - 2020 Incels identification on social networks by analyzing user comments
Supervisor
Basir Institute of Higher Education, Iran
2019 - 2020 Social Network Analysis of Poplar Wood Value Chain (Case Study: West Azerbaijan Province, North-West of Iran)
Co-supervisor
2018/05 - 2019/09 A gamified recommendation system for increasing customer loyalty
Supervisor
Basir Institute of Higher Education, Iran
2019 - 2019 A gamified recommendation system for increasing customer loyalty
Supervisor

Ad Hoc journal article review

Journal title (ISSN) Publisher
2024 - Current Entertainment Computing (1875-9521) Elsevier
2022 - Current Information Processing and Management (1873-5371) Elsevier
2022 - Current Cluster Computing (1573-7543) Springer
2022 - Current International Journal of Human–Computer Interaction Taylor & Francis
2021 - Current Social Network Analysis and Mining (1869-5469) Springer
2020/01 - Current Scientific Reports (2045-2322 ) Springer

Association member

Society Organization name Role
2022 - Current Association for Computing Machinery (ACM) Member (No: 4492571)
2022 - Current IEEE Member (No: 97048646)
2020 - Current Interactive Systems Research Group (DEI Lab) Member
2016 - Current Iran’s Elites National Foundation Member
2016 - Current Young Researchers' Club Member
2015 - Current Computer Science Forum, KIAU (Karaj Islamic Azad University) Member

Committee member

Activity description
Role 		Institution / Organization
2023 - Current Scientific Committee Member – ICOMIT 2023 Conference, Solo
Director
2015 - Current Scientific Committee Member – The 1st Conference on Science and Basic Research, Shiraz (2015)
Member
 Shiraz University, Iran

Conference scientific committee

Conference name Conference host
2017 - Current Digital Games Research Conference, Tehran University
2015 - Current Scientific Committee Member – Soft Computing Conference, Gilan (2015) Gilan university
2015 - Current Scientific Committee Member – The 1st Conference on New Findings in Electronic Engineering and Computer Science, Tehran (2015) University of Tehran
2015 - Current Scientific Committee Member – Soft Computing Conference, Gilan (2015) Gilan university

Course / Discipline taught

Academic session Degree Subject (Type) Institution / Organization
2019 - Current Multimedia database , Postgraduate
2019 - Current Advanced concepts in software engineering (Postgraduate Certificate)
2019 - Current Dependable Software Systems (Postgraduate Certificate)
2019 - Current Advanced artificial intelligence
2018 - Current Real-time embedded systems (Postgraduate Certificate)
2018 - Current Network security (Postgraduate Certificate)
2018 - Current Internet engineering (Bachelor)
2017 - Current Operating systems (Bachelor)
2017 - Current Applied computing (Bachelor)
2020 - 2020 Database and file structures computer science Universidad Carlos III de Madrid, Spain

Interview (tv / radio show)

Program Topic
2023 - 2023 Websummit Interview
Distinctions

Award

2022 Marie Curie Postdoctoral Fellowship (2022–2024)
EU Framework Programme for Research and Innovation Marie Sklodowska-Curie Actions, Belgium
2018 Superior graduate
Iran’s Elites National Foundation, Iran
2018 Superior youth
Iran’s Ministry of Interior, Iran
2017 Best Researcher
Islamic Azad University of Karaj, Iran