FULL STACK • ETHICAL HACKING • CYBERSECURITY

Hello, I'm Eleftherios Vagiotas

ETHICAL HACKING_

Full Stack Developer focused on modern web applications, SaaS platforms and security-focused systems.

Passionate about cybersecurity, ethical hacking, web application security and scalable cloud-based development.

Next.js React Supabase Cybersecurity Ethical Hacking Penetration Testing

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.

Experience & Education

Technical Sales & IT Support Associate — Computer Life (Nova Partner)

January 2026 – February 2026. Training on telecom services, internet connectivity and networking solutions. Hands-on use of CRM and service provisioning systems, customer support workflows, and customer data handling with security and GDPR awareness.

Teaching Internship — Music High School of Kavala

February 2025 – May 2025. Delivered introductory programming lessons using Scratch, guided students in developing interactive projects, and enhanced pedagogical and communication skills.

Bachelor in Computer Science — Democritus University of Thrace

Graduated with 8.53/Excellent (2021 – 2025).

Full Stack Developer — Semantic Business Software

July 2024 – September 2024. Worked on full-stack development tasks, implemented features and bug fixes.

Cyber Security Projects

Brute Force Detection

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

My Work

🚀 FEATURED SaaS PROJECT

Hotel Management System

HotelFlow

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

🔐 Authentication System

🏢 Multi-Hotel Support

View Landing Page 1 Month Free Trial

🌐 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

⚓ 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.

⚙️ Engine Room Profile

☁️ Next.js + Tailwind

View Live Website Built with Framer Motion

💈 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

📰 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

🦷 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

A movie database app fetching data from an API.

Moodle Bioinformatics

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

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

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

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

Introduction to Cybersecurity

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

Object-Oriented Programming with Python

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

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

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