Orestis Zestas

PhD Candidate, Researcher and Developer

        o.zestas ~ $ 


Orestis Zestas was born in 1998 in Thessaloniki, Greece. He has a BSc in Informatics and Telecommunications (2020) and a MSc in Computer Science (2021) from the University of Peloponnese. He has published two successful Android applications and developed a modern internal DSL for graph algorithms. He has also taken interest and worked on post-quantum secure blockchain signatures (BPQS). Currently, he is pursuing a doctoral degree, titled "Robotic System Designed for Rehabilitation and Support of Patients with Upper Limb Mobility Disorder", and is a member of the Communication Networks and Applications (CNA) Lab, University of Peloponnese.

Interest & Skills

Computer Vision

A lot of research experience on the field of computer vision algorithms and practices, along with published work regarding the rehabilitation of post-stroke patients.

Android Development

Solid experience (and published work) with modern software design and implementation principles.


Worked on projects regarding secure file encryption, communication encryption (XMPP + Omemo), as well as secure post-quantum secure signatures.


Constructed a new internal Domain Specific Language (DSL), which helps in defining graphs and graph algorithms, while providing a user-friendly and easy-to-read DSL. The defined algorithm objects are ready to use (code generated), and can interact with each other (exchange information, define order of execution, etc.). Solid experience with Flex & Bison. Constructed a mini version of the C programming language.

Online & Web development

Solid experience with SQL databases, such as PostgreSQL. Great knowledge (and finished projects) of no-SQL databases, such as the ElasticSearch-Logstash-Kibana (ELK) stack. JavaScript and PHP.

Programming Languages

-Kotlin / Java
-C / C++ / C#

You can download Orestis' CV, visit his GitLab page, as well as check out the team's laboratory.


Latest Activity

The Computer Vision Box & Block Test in Rehabilitation Assessment

Date Added to IEEE Xplore: 14 December 2022

Digital Version of the “Open/Close Zip” Subtest included in the Sollerman Hand Function Test

Date Added to IEEE Xplore: 14 December 2022


June 2022
  • Started research.


June 2021
  • Started research.