It is hereby certified that Alexandros Petridis has successfully attended and completed the course: CS3.3: Web application development with node.js

which is offered by Mathesis MOOCs, developed in Crete University Press of the Foundation for Research and Technology - Hellas, with the lecturers Mr Christos Sintoris and Mr Nikolaos Avouris, professors at the University of Patras.

The duration of the course was four weeks —3/10/2022 until 30/10/2022— with an estimated study time of 60 hours needed to complete the course. This course is offered via the platform OpenEdX/gr of Mathesis in compliance with all established technical and educational specifications. The assessment procedure is based on the honour code by which the participants commit to abide. The responsibility for the content of the course and its assessment lies exclusively with the lecturers. The final assignment was evaluated by the lecturers and their assistants.