CV

Work experience

• 04/2021-04/2023: Backend Developer
  • Borocard LLC.
  • Duties included:
    • Design and implementation of a REST API with Node.js and Express for a fintech application
    • Integration of third party services, such as, Belvo, Stripe and Conekta
    • Basic mobile applications development with Kotlin and Android Studio
• 03/2019-03/2021: Database Analyst – Backend Developer
  • Athens University of Economics and Business - Cerved
  • Project: “Real Estate Analytics”, an R&D collaboration project between the Athens University of Economics and Business and Cerved property agency
  • Duties included:
    • Systems and data analysis
    • Design and implementation of a data warehouse and the,
    • Corresponding Extraction-Transformations-Loading processes with Spring Boot and Microsoft SQL Server
• 2016-2017: Computer Programming Instructor
  • PeopleCert
  • Project: Coding Bootcamp by Hellenic Professionals Informatics Society
  • Topics taught: Object-Orientation, Java Collections, Web Programming, Security in Web Applications, Web Servers configuration and maintenance
• 01/2016-12/2018: Software Analyst
  • SingularLogic
  • Duties included:
    • Engaged in the process of preparing proposals for research and development funding programs at the national and European levels
    • Performed systems analysis as part of the PhD studies
• 10/2011-05/2012: Java developer
  • Aristotle University of Thessaloniki
  • Duties included:
    • Research on design pattern recognition tools
    • Develop a tool that combines, verifies and extracts reusable components based on design patterns used in open source software projects.

Education

• Ph.D in Secure Systems on Cloud Computing Infrastructures, Department of Management Science and Technology, Athens University of Economics and Business, Greece, 2024 (expected)
  • Research fields: Software Engineering, Security, Open-Source, Software Quality Assurance and Code Analysis
• M.S. in Computer Science - Software Engineering and Distributed Systems, University of Groningen, Netherlands, 2015
  • Indicative courses: Software Architecture, Web & Cloud Computing, Software Patterns, Software Maintenance & Evolution, Distributed Systems, Sustainable and Integrated Information Systems, Systems Engineering, Business Intelligence
• B.S. in Information Technology Engineering, Department of Information Technology, Technological Educational Institute of Thessaloniki, Greece, 2012
  • Certificates: Holder of the Interconnecting Cisco Networking Devices Part 1 (ICND1) certificate
  • Grade: 7,86 / 10 (Graduated 2nd in class)

Languages

• Greek (native speaker)
• English (C2)

Skills

• Programming Languages
  • Proficient: Java, Javascript, Python, SQL
  • Experienced: Typescript, C#, C
  • Basic: C++, Kotlin, React Native
• Tools and Frameworks
  • Git (and GitHub / GitLab),
  • Docker,
  • Node.js, Express, NestJS,
  • Spring Boot,
  • Flask, Django,
  • Android Studio, Visual Studio,
  • PowerBI, SQL server, Postgres, MongoDB, Mongoose,
  • LaTeX

Publications

An Empirical Analysis of Vulnerabilities in Virtualization Technologies

A. Gkortzis, S. Rizou and D. Spinellis, 'An Empirical Analysis of Vulnerabilities in Virtualization Technologies,' 2016 IEEE International Conference on Cloud Computing Technology and Science (CloudCom), 2016, pp. 533-538, doi: 10.1109/CloudCom.2016.0093.

VulinOSS: A Dataset of Security Vulnerabilities in Open-source Systems

Antonios Gkortzis, Dimitris Mitropoulos, Diomidis Spinellis. "VulinOSS: A Dataset of Security Vulnerabilities in Open-source Systems." ACM Mining Software Repositories conference (MSR'18).

A Double-Edged Sword? Software Reuse and Potential Security Vulnerabilities

Antonios Gkortzis, Daniel Feitosa, Diomidis Spinellis, 'A double-edged sword? software reuse and potential security vulnerabilities', Publisher: Springer, Cham, pages: 187-203 https://doi.org/10.1007/978-3-030-22888-0_13

Software reuse cuts both ways: An empirical analysis of its relationship with security vulnerabilities

Gkortzis, Antonios, Daniel Feitosa, and Diomidis Spinellis. 'Software reuse cuts both ways: An empirical analysis of its relationship with security vulnerabilities.' Journal of Systems and Software 172 (2021): 110653

Teaching

Lab instructor in Imperative Programming with C / Team coach in Software Engineering

Team coach in Software Architecture & Software Patterns

Lab Instructor in Reliable and Secure Software Development

Lab Instructor in Software Engineering in Practice

Scholarships

• Marie Skłodowska-Curie fellow, participating in the Software Engineering in Enterprise Cloud Applications (SENECA) EU funded European project (2016-2018)