FULL STACK • AI • CYBERSECURITY

Hello, I'm Eleftherios Vagiotas

BUILDING SECURE DIGITAL SYSTEMS_

Full-Stack Developer & AI Project Contributor with a strong focus on cybersecurity and ethical hacking.

I build modern web applications, AI-powered solutions and security-focused systems using technologies such as React, Node.js, Python, PostgreSQL and Supabase.

Full Stack AI Cybersecurity Ethical Hacking Web Security Python
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ABOUT ME

Full Stack Developer with a Cybersecurity Mindset

I am a Computer Science graduate from Democritus University of Thrace, with a final grade of 8.53 / Excellent. My background combines full-stack web development, academic research and hands-on software engineering.

Recently, I have shifted my focus toward cybersecurity and ethical hacking, especially web application security, vulnerability assessment and real-world attack techniques.

8.53

Final Grade

Full Stack

Development

Cybersecurity

Main Focus

What I focus on

Building responsive full-stack web applications
Developing SaaS platforms with modern cloud tools
Learning ethical hacking and vulnerability assessment
Practicing web application security testing
ACADEMIC RESEARCH

Publications

Research work focused on Edge AI, adaptive computation and intelligent offloading systems.

IEEE Publication

Energy Equilibrium in Edge AI Systems via Adaptive Reverse Offloading

Academic research exploring energy-aware Edge AI systems and adaptive reverse offloading strategies for balancing computational workload and improving system efficiency.

Edge AI Energy Efficiency Reverse Offloading Distributed Systems IEEE
View Publication
FULL STACK • CLOUD • CYBERSECURITY

Technologies & Security Tools

Building scalable web applications and security-focused systems.

Real-world technologies used in SaaS platforms, cloud systems, databases, and cybersecurity projects.

Cybersecurity Tools
Kali Linux
Burp Suite
Wireshark
Linux
OWASP
Bash
Splunk
Nmap
Metasploit
Kali Linux
Burp Suite
Wireshark
Linux
OWASP
Full Stack Development
Next.js
React
JavaScript
TypeScript
Node.js
Python
Java
PostgreSQL
MySQL
Supabase
Firebase
Tailwind CSS
Git
GitHub
Vercel
Next.js
React
JavaScript
TypeScript
Node.js

Always learning. Always building.

CAREER JOURNEY

Experience & Education

My professional and academic journey across software development, AI, networking and computer science.

EXPERIENCE

Full-Stack Developer & AI Project Contributor

Hellenic Army

June 2026 — Present
Athens & Evros, Greece
  • Developed a full-stack ordering application using React, Node.js, Supabase and PostgreSQL.
  • Built frontend, backend and database functionality supporting order management.
  • Contributed to a camera-based object detection prototype using Python and YOLOv8.
  • Implemented authentication and role-based access controls.
  • Used Git, GitHub and Trello for collaboration and task management.
  • Contributed to additional technology projects within a restricted military environment under strict confidentiality requirements.
React Node.js Python YOLOv8 Supabase PostgreSQL Git
EXPERIENCE

Technical Sales & IT Support Associate

Computer Life — Nova Partner

Jan 2026 — Feb 2026

Training on telecom services, internet connectivity and networking solutions. Hands-on experience with CRM systems, service provisioning, customer support workflows and secure customer data handling.

Networking CRM IT Support Telecom GDPR
INTERNSHIP

Teaching Internship

Music High School of Kavala

Feb 2025 — May 2025

Delivered introductory programming lessons using Scratch, guided students in developing interactive projects and strengthened communication and teaching skills.

Scratch Programming Teaching
EDUCATION

Bachelor in Computer Science

Democritus University of Thrace

2021 — 2025

Graduated with a final grade of 8.53 / Excellent.

Computer Science Software Engineering AI Networks
EXPERIENCE

Junior Web Developer

Semantic Business Software

Jul 2024 — Sep 2024

Worked on website development, customization, API integration, database connectivity and real-world software development tasks.

HTML CSS JavaScript PHP Python MySQL

Cyber Security Projects

Brute Force Detection
Brute Force Detection

SOC-style log analysis project detecting SSH brute force attacks using Linux logs and detection rules.

My Work

HotelFlow Hotel Management System
🚀 FEATURED SaaS PROJECT
Hotel Management System

HotelFlow

A modern hotel management platform built for hotels, villas and rental properties.

🏨 Room Management
📅 Booking Calendar
👨‍💼 Staff Accounts
⚡ Real-time Tasks
🔐 Authentication System
🏢 Multi-Hotel Support
View Landing Page 1 Month Free Trial
Aegean Pearl Luxury Hotel Website
🌐 LUXURY HOTEL BOOKING WEBSITE
Hotel Website + Booking Engine

Aegean Pearl Hotel Website

A premium luxury hotel website connected directly with HotelFlow, featuring online booking, live room availability and real-time booking synchronization.

🏨 Luxury Responsive Design
📅 Online Booking Form
⚡ Live Room Availability
🔗 HotelFlow Integration
🌍 Greek / English UI
☁️ Next.js + Supabase
View Live Website Connected with HotelFlow
Maritime Portfolio Website
⚓ PREMIUM MARITIME PORTFOLIO
Client Portfolio Website

Maritime Portfolio

A modern professional portfolio website for a Merchant Marine Engineer, featuring sea service experience, certifications, technical skills and maritime career information.

⚓ Maritime UI Design
🌊 Smooth Animations
📱 Fully Responsive
🧑‍🔧 CV-Based Content
⚙️ Engine Room Profile
☁️ Next.js + Tailwind
View Live Website Built with Framer Motion
Officers Club Meal Ordering System
🎖️ MEAL ORDERING & MANAGEMENT SYSTEM
Full-Stack Management Platform

Officers Club Management System

A full-stack web application for managing monthly meal menus and online food orders for two Officers Clubs, with dedicated Admin, Staff and User environments.

🍽️ Online Meal Ordering
📅 Monthly Menu Management
👨‍💼 Admin & Staff Accounts
🏢 Multi-Location Support
🔐 Secure Authentication
☁️ Next.js + Supabase
View Live Application Full-Stack SaaS Project
SalonBook Booking System
💈 FULL-STACK BOOKING APP
Salon & Barber Booking System

SalonBook

A modern booking platform for salons and barber shops, built with online appointments, admin dashboard and real-time availability.

📅 Online Appointments
⏰ Available Time Slots
🔴 Booked Slot Detection
👤 Admin Dashboard
🔐 Protected Login
⚡ Supabase Backend
View Live Demo Next.js + Supabase
SportPress Sports News CMS
📰 SPORTS NEWS CMS PLATFORM
Sports News Publishing Platform

SportPress

A modern sports news platform with article publishing, journalist dashboard, category filtering and real-time article analytics.

📰 Article Publishing
🔎 Smart Search System
🏀 Sports Categories
📈 Most Read Articles
🔐 Journalist Admin Panel
⚡ Next.js + Supabase CMS
View Live Demo Responsive News Platform
LumiDent Dental Booking Platform
🦷 MODERN DENTAL BOOKING PLATFORM
Dental Clinic Booking System

LumiDent

A premium dental clinic website with online appointment booking, admin dashboard and real-time availability system.

📅 Online Appointments
🦷 Dental Clinic UI
⏰ Smart Time Slots
👨‍⚕️ Dentist Dashboard
🔐 Protected Admin Login
⚡ Next.js + Supabase
View Live Demo Premium UI Design
Movie API Project
Movie API

A movie database app fetching data from an API.
Project 3
Moodle Bioinformatics

An interactive e-learning platform for bioinformatics, offering courses on genomics, data analysis, and AI applications in healthcare.
AI Chatbot
Find Car Mobile App

A smart mobile app designed to help you easily locate your parked car. Features real-time GPS navigation, location saving, and an intuitive user interface.

MedSegFlow
MedSegFlow

A medical imaging project built with Python and Streamlit. Users can train a CNN model on MRI scans and classify new images as YES (tumor detected) or NO (no tumor).

Car Station Management System
Car Station Management

A Java desktop application that organizes the daily workflow of car service stations. Provides role-based access for administrators, staff, and customers to ensure security and efficiency.

Certifications

Cisco Introduction to Cybersecurity
Introduction to Cybersecurity

Issued by Cisco. Covers fundamental cybersecurity concepts, network security basics, common threats, and security best practices.

OOP with Python
Object-Oriented Programming with Python

Issued by iMooX.at. Covers OOP principles, classes, inheritance, and advanced Python techniques.

Network Basics Certification
Networking Basics

Issued by Cisco. Covers fundamental networking concepts, including IP addressing, subnetting, and network troubleshooting.

Get in Touch

Open to work
and new challenges.

If you're looking for a passionate and motivated junior developer, feel free to contact me. I'm eager to learn and contribute.

Send Email: eleftheriosvagiotas@gmail.com