Alexandros Petridis

Always curious & interested in

Resume

Summary

Alexandros Petridis

CERN, European Organization for Nuclear Research
Aristotle Univeristy of Thessaloniki

Education

Electrical & Computer Engineer

Dec 2016 - Nov 2023
Grade: 7.75

Master of Engineering
Aristotle University of Thessaloniki
Department of Computers & Electronics

Professional Experience

Endpoint Security Engineer

Dec 2023 - Present

Meyrin, CERN

  • Managed Endpoint Security: Successfully managed endpoint device security by deploying and operating Antivirus and Endpoint Detection and Response (EDR) solutions for Windows and macOS environments, ensuring robust protection against malware and cyber threats.
  • Threat Detection and Incident Response: Utilized EDR tools to monitor and analyze security alerts, detect threats, and respond to incidents. Conducted comprehensive investigations to identify and mitigate security breaches.
  • Developed and Maintained EDR Policies: Created, implemented, and regularly updated EDR policies to enhance threat detection and response capabilities, ensuring alignment with organizational security standards.
  • Maintained EDR Infrastructure: Managed and maintained the EDR infrastructure, including Windows Servers and MSSQL databases, ensuring high availability, optimal performance, and security compliance.
  • Proactive Threat Hunting: Conducted proactive threat hunting using EDR solutions to identify potential threats, vulnerabilities, and indicators of compromise (IOCs) before exploitation, enhancing overall security posture.
  • Part-Time Member of the CERN Security Team: Collaborated with the CERN Security Team to minimize the impact of security incidents on the CERN site through prevention, detection, and response activities using SIEM (Security Information and Event Management) and SOAR (Security Orchestration, Automation, and Response) solutions.
  • Security Reviews and Audits: Conducted thorough security reviews and audits for devices requiring firewall openings to ensure compliance with security policies and to minimize potential vulnerabilities.
  • Enhanced Security Configurations for Windows Devices: Reviewed, extended, and improved existing security configurations for Windows devices to strengthen defense mechanisms against potential cyber threats.
  • Deployed and Managed "Hardened PC" Configurations: Implemented and managed "Hardened PC" configurations in selected areas of the organization to provide enhanced protection for critical systems.
  • Conducted Security Audits for Client-Server Protocols and Ciphers: Performed security audits and recommended improvements for client-server protocols and security ciphers to ensure secure data transmission and communications.
  • Reviewed Security Guidelines for CERN's Managed Computers: Assessed and refined security guidelines for both centrally and locally managed computers at CERN, ensuring adherence to best practices in cybersecurity.
  • Application Packaging and Deployment: Packaged and deployed applications and security configurations using various deployment environments, including Microsoft Intune, MECM and JAMF to enhance both security and productivity.
  • Provided 3rd Level Support for Windows, Application Provisioning and Antivirus: Participated in 3rd level support for Windows environments, application provisioning and antivirus support resolving complex technical issues and ensuring smooth operation across the organization.

Web & Software developer / IT support

Oct 2022 - Oct 2023

Meyrin, CERN

  • Content management: Web design, website management, Design and modules creation for websites in Drupal 8.
  • System administration: Hardware and system management: Windows PCs, Network administration, GNU/Linux administration.
  • Web applications: Web application development (e.g in HTML, CSS, JS, H5P) for virtual educational games and other virtual activities around particle and high-energy physics.
  • Database Management: Management of database systems on MySQL.
  • Script support on Python, C/C++.
  • IT technical support

Information Technology Support Engineer

Oct 2018 - Jun 2019

Thessaloniki, IT department of AUTh

  • Support for services and infrastructure at the IT Center of the Aristotle University of Thessaloniki.
  • Worked as Level 1, 2 and 3 of technical support.
  • Development and services support on Information & Communication Technologies for research at AUTh

Information Technology System Engineer

Dec 2018 - Jun 2019
Thessaloniki, School of Rural and Surveying Engineering, AUTh
  • Upgrading and expansion of library, computer lab and other infrastructures of the Department of Rural and Surveying Engineering.
  • Worked as Level 1 and 2 of technical support
  • Development and services support on Information & Communication Technologies for research at RSE

Certificates

Certified Kubernetes Administrator

Cloud Native Computing Foundation
May 2023

Certificate available here

Certified ESET Managed Client Security Specialist

ESET
August 2024

Certificate available here

Challenges

F1TENTH Grand Prix

IEEE International Conference on Robotics and Automation (ICRA)
May 2023

Innovation Challenge in Thessaloniki

Tech4Good from Accenture
June 2022

ACM AUTh

Days of Coding 2022
May 2022

Machine Learning Applications

3rd Place on EESTech Challenge 2022
April 2022

Cybersecurity: Capture the flag

EESTech Challenge 2021
April 2021

Projects

In this section, you will find a collection of my projects that span across different domains such as personal, university-related, and work-related projects. Some of these projects are available on my GitHub profile, and I encourage you to explore and learn more about them.

GitHub public repos

  • All
  • Personal
  • University
  • Work

Intrusion Detection System

Technologies: Python, ML

Drupal Custom Module Template

Technologies: Drupal, PHP, REST, Webform Handlers

Cloud & Containers

Technologies: Docker, Kubernetes, CI/CD

Information Systems Security

Technologies: Windows Policies & Rules, Linux, OpenSSL, pwdump7, Cain & Abel, Hashcat, MySQL Injection, CrypTool 2.1, Zenmap, Wireshark, Digital Certificates

Microprocessors and Peripherals

Technologies: Assemply, C, C++, Makefile, SWIG

hop

CERN

Hands-On-Physics

Technologies: Drupal, PHP, HTML, CSS, JavaScript

hop

CERN

Science Gateway Res ources

Technologies: Drupal, PHP, HTML, CSS, JavaScript

CERN

Solvay Education Programme

Technologies: Drupal, PHP, HTML, CSS, JavaScript

CERN

Physics Education Research

Technologies: Drupal, PHP, HTML, CSS, JavaScript

Playing with MPI

Technologies: C (OpenMP)

Software Engineering

Technologies: Python

Embedded Systems

Technologies: C(Pthreads), Makefile, Python

Parallel and Distributed Systems

Technologies: Python, C (OpenCilk, OpenMP, Pthreads), Makefile

Computer Networks

Technologies: Java (asynchronous serial communications), Protocols (UDP, TCP)

flaskapp

NodeJS App

Technologies: HTML (Handlebars), JavaScript (NodeJS), CSS

flaskapp

Flask App

Technologies: HTML, Python (Flask, WTForms), CSS

Data Science

Technologies: Python (Jupyter Notebook)

Computational Intelligence

Technologies: MATLAB, Python (Jupyter Notebook)

My personal website

Technologies: HTML, CSS, JavaScript, GitHub Pages

Greek Country Quiz

Technologies: HTML, CSS, JavaScript, PHP

Movies Flask Web App

Technologies: Technologies: HTML, Python (Flask, WTForms), CSS, Heroku

Reliability Projects

Technologies: OMERE

Card Game with Python

Technologies: Python (TKinter, pickle)

Electronics

Technologies: MATLAB, PSpice

Bus Database

Technologies: MySQL, PHP, Heroku

Pacman

Technologies: Java

Digital Image Process

Technologies: MATLAB

Digital Hardware Systems

Technologies: Verilog

Computer Graphics

Technologies: MATLAB

Graph Theory

Technologies: Python, Gephi

CERN

Teacher Programmes

Technologies: Drupal, PHP, HTML, CSS, JavaScript

CERN

Digital Learning Modules

Technologies: Drupal, PHP, HTML, CSS, JavaScript

CERN

International Relations Sector SURVEYS website

Technologies: Drupal, PHP, HTML, CSS, JavaScript

CERN

S'Cool LAB

Technologies: Drupal, PHP, HTML, CSS, JavaScript

CERN

Beamline For Schools

Technologies: Drupal, PHP, HTML, CSS, JavaScript

CERN

DAC Website

Technologies: Drupal, PHP, HTML, CSS, JavaScript

CERN

Internship Programmes for High-School Students

Technologies: Drupal, PHP, HTML, CSS, JavaScript