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Team of Experts

  • Diamandis Tziotzios

    VP of Εngineering

    Diamandis Tziotzios

    VP of Εngineering


    Tziotzios Diamantis is a graduate of Department of Electrical and Computer Engineering at Democritus University of Thrace (DUTh). He is the Vice President of Engineering of CITE, being responsible for our team of Engineers, as well as implementing mobile applications for iOS and Android platforms (Java, Objective-C). Apart from that, he’s also implementing Backend Services (C#) and Web UIs (JS, CSS, HTML). His interests, among others, include fast cars, basketball games, tennis and... Nerf Wars at the office.
  • Spyros Boutsis

    VP of Software Services

    Spyros Boutsis

    VP of Software Services


    Spyros Boutsis is a Senior Software Engineer, graduate of the Department of Informatics and Telecommunications of the National and Kapodistrian University of Athens with degree on Information Systems. He holds an MSc degree on Advanced Information Systems from the Department of Informatics and Telecommunications of the National and Kapodistrian University of Athens. Since 2006, he has been engaged, as a software engineer in the University of Athens, designing and implementing modules of a large scale distributed system for managing digital libraries, in the context of the “DILIGENT”, “D4Science” and “D4Science II” research projects. He is the Vice President of Sorfware Services of CITE, as well as responsible for designing and implementing service modules and user interface elements of web applications running on the cloud. He is experienced in Java, .Net and PHP ecosystems as well as JS/HTML5/CSS3 frameworks. His experience covers designing and developing IT systems based on the service oriented architecture (SOA) paradigm, as well as building web applications utilizing modern web technologies and frameworks.
  • Panagiota Koltsida

    Senior Software Engineer / Researcher

    Panagiota Koltsida

    Senior Software Engineer / Researcher


    Panagiota Koltsida is a senior software engineer / researcher, graduated from the Department of Informatics and Telecommunications of National and Kapodistrian University of Athens and she has also received a M.Sc. on Advanced Information Systems from the same department. She has been working for more than 10 years in several research projects on behalf of National and Kapodistrian University of Athens, the Athena Research and Innovation Center and CITE: Diligent, D4Science, iMarine, EarthServer, Blue Bridge, RDA Europe and CAPSELLA. She is experienced in managing all stages of large scaled distributed software implementation, starting from requirement’s analysis, up to design, builds, deployment and testing. She has been the technical manager of the ATHENA research team in the EarthServer and Blue Bridge projects and is currently the technical manager of the CAPSELLA project. Her research interests include Information Retrieval systems, Data and Metadata Management and Web Information Systems and her technological expertise includes Java, XML and web related technologies.
  • Efstratios Giannopoulos

    Branch Manager / Senior Software Engineer

    Efstratios Giannopoulos

    Branch Manager / Senior Software Engineer


    Efstratios Giannopoulos is a graduate of the department of Computer Science and Technology of University of the Peloponnese and holds a Master’s degree on “Advanced Telecommunication Systems and Networks” from the department of Telecommunications Science and Technology of the same institute. His professional software engineering carrier started in 2012, working as a freelancer developing applications for the University of Athens and specifically in the project of Plato Academy, focusing on geospatial data management applications and location-based services. Since 2013 he is employed by CITE as a software engineer, working mainly on .Net ecosystem, on the development of cloud-based web applications. He has good knowledge of object oriented languages (c #, java, C++), relational databases (MSSQL, MySQL, PostgreSQL), web application frameworks (jsp, asp .net mvc), and web technologies (JS/CSS3/HTML, jQuery, bootstrap), as well as internet and security protocols (e.g. SAML, OAuth etc).
  • Olga Sidiropoulou

    Systems Design & Usability Engineer

    Olga Sidiropoulou

    Systems Design & Usability Engineer


    Olga Sidiropoulou is a graduate of the Department of Product and Systems Design Engineering at the University of the Aegean (2013). Her academic courses extended from history of art, and graphic design to virtual reality and artificial intelligence. She has majored in Human - Machine Interaction (HCI), composed a thesis on Information Architecture methods in e-commerce and has particularly specialized in the field of user experience design. She has mostly worked for custom software producing companies such as Out of Bounds (2011) and currently for CITE. Through constant training on the ever-evolving field of user experience and information technology she frequently attends seminars and conferences regarding new technologies (e.g. Unity 3D, Drupal 8) and user experience methods (e.g. Gamification techniques). Her experience covers the following sectors: Design of User Experience and User Interface on large scale software from conception to implementation, Optimization of User Experience and User Interface on already functional software, Web design and website development, Game Design, 3D modeling, Animation, Graphic design. She has participated through CITE in a number of large scale projects: Academy of Plato, EarthServer2, BlueBRIDGE etc.
  • Lefkothea Katsina

    Software Engineer

    Lefkothea Katsina

    Software Engineer


    Katsina Lefkothea has graduated from Informatics and Telecommunications Department of National and Kapodistrian University of Athens. Recently she started her collaboration with CITE, working as a Software Developer. She is fluent in C,C++,Python and Android environments as well as on internet technologies and PHP/JS/HTML5/CSS3 frameworks.
  • Panagiota Papagianni

    Software Engineer

    Panagiota Papagianni

    Software Engineer


    Graduate of the department Of Computer Engineering And Informatics of the University of Patras and holder of a master’s degree on “Computer And Science Technology” in “Applications And Foundations Of Computer Science” in the same department. Has worked for three years as a computer engineer at “Knowledge” company located in Patra. There she developed web applications and participated in research programs which use Machine Learning Approaches. She has knowledge of programming languages (Groovy, Python, Java, Php, Javascript), databases (Oracle, MySQL, MongoDB), web technologies (html, css, bootstrap), ElasticSearch Engine and NodeJs tool.
  • Ermis Ioannidis

    Software Engineer

    Ermis Ioannidis

    Software Engineer


    Ermis Ioannidis is a junior software engineer with professional experience in implementing commercial information technology projects. He has participated in the implementation of web applications. As a developer he has experience in the full stack of web application development. He has successfully implemented user interfaces and web services. He is a graduate of the Department of NKUA’s Informatics and Telecommunications. His experience as a developer spans to both server side and client-side technologies such as Microsoft .Net, Java, C#, C, typescript, AngularJS, javascript, html, css, bootstrap, xml and SQL with several RDBMs (MS SQL Server, PostgreSQL, MySQL etc).
  • Nina Loxou

    Accounting Assistant

    Nina Loxou

    Accounting Assistant


    Nina Loxou worked briefly in the Hotel Industry and later in a commercial company as a Marketing Executive. The next three years she worked for a Consulting Company as an accounting assistant and was also responsible for the implementation of the company’s NSRF program. She joined CITE in May 2015 as an accounting assistant. She is a member of the Economic Chamber of Greece since 2011 as an accountant and an economist. She graduated from the Department of Business Administration of Patras University and has a Master’s Degree in Service Management from Athens University of Economics And Business.
  • Sotirios Giannopoulos

    Software Engineer

    Sotirios Giannopoulos

    Software Engineer


    Sotiris Giannopoulos is a graduate of the department of Electrical and Computer Engineering of the University of Patras. He is a Software Engineer that has professional experience working on large projects affecting thousands of users. Experienced using technologies including C#, .NET Framework, .NET Core, IIS Server, Javascript, ExtJS, Angular, SQL, MySQL, OracleDB.
  • Georgios Nektarios Englezos

    Georgios Nektarios Englezos


    Georgios Nektarios Englezos is an undergraduate student of the Department of Informatics and Telematics at Harokopio University of Athens. He programs in Java and C# while he has knowledge in C, Python, CSS, HTML and Javascript. Starting from his internship, he has worked on Java, Spring Framework, C# and ASP .NET. His main interest is video game development. 
  • Sotiris Sotiropoulos

    Software Engineer

    Sotiris Sotiropoulos

    Software Engineer


    Sotiropoulos Sotirios is a graduate of Computer Science Department (CSD) at University of Crete (UOC). He is employed by CITE as a Software Developer currently working on the Cloudroll project.
  • Nikos Sakellariou

    Systems Administrator

    Nikos Sakellariou

    Systems Administrator


    Nikos Sakellariou was born in 1987 in Sparta. He studied Computer Science at the Technological Educational Institute of Athens where he graduated in 2012 as a Computer Engineer. Worked for the Public Real Estate Company (ΕΤΑΔ Α.Ε) as a Systems Administrator / Software Developer. He participated with Harokopio University in the program "KALLIPOS" with the aim of creating an e-book. He has also collaborated with the Hellenic Centre for Marine Research (ΕΛ.ΚΕ.Θ.Ε.) to develop the web site "meteo.hcmr.gr" that depicts a weather forecasting model. Finally, since 2020 he has been working at CITE as a Systems Administrator.
  • Kristian Ntavidi

    Software Engineer

    Kristian Ntavidi

    Software Engineer


    Kristian Ntavidi is a graduate of the Computer Science Department of the Aristotle University of Thessaloniki with specialization in Information Systems. He has knowledge in Web technologies including Angular, HTML5, CSS3, JQuery, JavaScript, Bootstrap, PHP, SQL and he is familiar with programming in Java, Java Android, C/C++ and Python.
  • Filippos Simpf

    Software Engineer

    Filippos Simpf

    Software Engineer


    Filippos Simpf is a graduate student of the Department of Electrical and Computer Engineering (ECE) of the University of Peloponnese. He has experience in Mobile development and especially in Android development using native Android technologies . He recently started working at CITE as a software engineer working on cross-platform mobile development with React Native. His knowledge includes technologies such as Java, Java (Android), Javascript, HTML / CSS, XML, SQL with SQLite and MySQL
  • Anna Papachristou

    Software Engineer

    Anna Papachristou

    Software Engineer


    Anna Papachristou is a junior software engineer and a graduate of the Department of Informatics and Telecommunications of NKUA’s. She is experienced on JavaScript, Typescript, Angular, HTML, CSS, Sass, Bootstrap and is familiar with SQL, C, C++, Java, Pyton and Android. During her studies she has taken part on the development of three web and one Android applications.
  • Nikos Paschalis

    Software Engineer

    Nikos Paschalis

    Software Engineer


    Nikos Paschalis studied Mathematics at the National and Kapodistrian University of Athens and Desktop Publishing & Web Publishing Design at AKTO College. He is familiar with HTML, CSS, JavaScript, React, C#, ASP.NET Core and Entity Framework. He has been working at CITE since 2022.
  • Panagiotis Mamouras

    Software Engineer

    Panagiotis Mamouras

    Software Engineer


    Panagiotis Mamouras is a graduate of the Electrical and Computer Engineering Department of the University of Thessaly. During his studies, he followed mainly network courses, while he is familiar with HTML, CSS, Javascript, Bootstrap, Angular, React, C and Python.
  • Nikoleta Politi

    Designer

    Nikoleta Politi

    Designer


    Nikoleta Politi is a graduate of the Department of Product and Systems Design Engineering at the School of Engineering of the University of the Aegean. She has majored in Human-Computer Interaction. Among others, her academic courses were "Design for All", "Digital Narrative Forms", "History of Art" etc. As part of her Internship, she has been involved in the evaluation of a computer Math game (Variant Limits) , while she has worked as a Website and Social Media Manager.
  • Konstantinos Laloudakis

    Software Engineer

    Konstantinos Laloudakis

    Software Engineer


    Konstantinos Laloudakis is a graduate of the Department of Informatics and Telecommunications at University of Peloponnese and holds a Master’s degree on ‘Computer Science’ from the same department. He is experienced on Javascript, React, Angular, HTML, CSS, Bootstrap, C and is familiar with SQL, C#, Java and React Native. During his studies he has taken part in the development of multiple web applications.
  • Thomas Georgios Giannos

    Software Engineer

    Thomas Georgios Giannos

    Software Engineer


    Thomas Georgios Giannos is a Junior Software Engineer, graduate of the Department of Informatics at Information and Communication Techologies branch of University of Piraeus, specialized in Web Development.
  • Vasileios Marantos

    Software Engineer

    Vasileios Marantos

    Software Engineer


    Vasileios Marantos is a graduate of the department of Informatics & Telematics of Harokopio University. His professional career started in 2018, working as a Full Stack Developer developing applications for Logistics Companies. He has programming experience in php, java, JavaScript , CSS, html, bootstrap and SQL with RDBMs(MS SQL, MySQL).
  • Dimitris Polygenis

    Software Engineer

    Dimitris Polygenis

    Software Engineer


    Dimitris Polygenis is a student of the Department of Informatics and Telematics of Harokopio University. He is familiar with languages ​​and technologies such as C #, ASP .NET Core, EF Core, Java, Spring Framework, SQL, as well as general knowledge of HTML, CSS, JavaScript, Python. During his studies, he has participated in the implementation of multiple web applications as well as APIs. His professional career began at CITE in 2021 as a software engineer after the initial collaboration for the implementation of his internship. 
  • Alexandros Mandilaras

    DevOps Engineer

    Alexandros Mandilaras

    DevOps Engineer


    Alexandros Mandilaras studied Electronic Engineering at the Technological Educational Institute of Athens where he graduated in 2022. He also worked at SMARTEC S.A as a Samsung Authorized Service Center technician where he performed smartphone repairs and Quality Control services. He successfully finished a six week DevSecOps program called "Project Future", powered by ReGeneration and Piraeus Bank that adequately covered with extended hands-on sessions & real-life case studies in thematics such as High Availability & Horizontal Scaling, Cloud Compute & Storage Services, Container Services, Relational Database Services and more. Finally, he has been working at CITE as a DevOps engineer since 2022.
  • Nikolaos Vlahos

    Software Engineer

    Nikolaos Vlahos

    Software Engineer


    Nikolaos Vlahos is a graduate student of the Department of Informatics and Telecommunications of the National & Kapodistrian University of Athens. He recently started working with CITE as a software engineer, developing web applications. He has experience in C# (.NET Framework), C, C ++, JavaScript (Angular), SQL and Python. 
  • Georgios Farao

    Software Engineer

    Georgios Farao

    Software Engineer


    Georgios Farao is a graduate of the Department of Informatics and Telecommunications of the National and Kapodistrian University of Athnes. He is familiar with technologies and languages such as ASP .NET Core, Angular, SQL, C#, C/C++, Python as well as HTML and CSS. He has been working at CITE as a software engineer, developing APIs and web applications. 
  • George Kavalieros

    Software Engineer

    George Kavalieros

    Software Engineer


    George Kavalieros is a graduate of Department of Informatics of the Athens University of Economics and Business. He is a Software Engineer that has professional experience working on large projects affecting thousands of users. Experienced using technologies including C#, .NET Framework, .NET Core, SQL, Javascript, KnockoutJS, Angular.
  • Nektaria Adamopoulou

    Administrative Assistant

    Nektaria Adamopoulou

    Administrative Assistant


    Nektaria Adamopoulou is a graduate of the Department of Economis at the University of Piraeus. She has previously worked in office management, secretarial support and as an accounting assistant. At CITE she works as an executive of office administrative organization. 
  • George Kalampokis

    Software Engineer

    George Kalampokis

    Software Engineer


    George Kalampokis is a graduate of the Informatics Department at the Athens University of Economics & Bussiness, and has started working with CITE as a software developer. He has an academic background on object-oriented programming and has worked with a number of technologies such as Java, C, C++, C# with .NET framework and Windows forms, as well as HTML / CSS / Javascript. In his free time he works on the Classic RBDoom 3 BFG and the development of the Open Platform library, which aims to make game development across online platforms easier.