Available for opportunities · Heraklion, Crete
Antonis Karagiannis
Electrical & Computer Engineering student at HAMU (ΕΛΜΕΠΑ). Full Stack Developer, Network Engineer, Security Systems Installer & founder of KarajohnHosting.
5+
years of experience
4+
github projects
3
spoken languages
∞
coffees / week
// 02. expertise
Technical Skills
Software Development
Networks & Infrastructure
Virtualization
Security Systems
Smart Homes & Automation
Robotics
// 03. work
GitHub Projects
Sign Language Translator
A real-time spoken word to sign language conversion system built with a Raspberry Pi and a mobile phone. Translates speech into visual sign language on the fly.
EcoSeed
An eco-friendly smart plant monitoring system that automatically cares for your plant and sends notifications about its growth progress.
Green Stay Rewards
A per-room energy consumption monitoring system for hotels, encouraging sustainable usage in a privacy-respecting way through a rewards mechanism.
DiscGit Auth
A web app for monitoring GitHub repository stars in real time. Connects to the GitHub API to provide live star tracking and analytics.
Aura
An issue tracker developed as part of the AuraDevelopers team. Manages and tracks bugs, features, and project milestones collaboratively.
// 04. career
Work Experience
🔧
2021 — Present
Installation Technician
Self-Employed · Freelance
Installation and configuration of security systems (CCTV cameras, alarm systems) in residential and commercial premises. Design and deployment of Point-to-Point (P2P) wireless network links using Ubiquiti and Mikrotik equipment. Network infrastructure setup and remote management.
🍽️
July 2025 — January 2026
Head Waiter
Luxury Restaurant
Delivered high-standard customer service in a fine dining environment. Managed tables, took orders, coordinated with the kitchen team, and ensured an exceptional hospitality experience for every guest.
🏨
July 2024 — August 2024
Waiter Assistant
Hotel
Supported the food & beverage team in a hotel setting. Assisted guests, prepared tables, and collaborated closely with chefs and senior waitstaff.
// 04b. education
Education
2024 — Present · 3rd Year
Electrical Engineering, Mechanical Engineering
& Computer Engineering
& Computer Engineering
Hellenic Mediterranean University (HAMU · ΕΛΜΕΠΑ) · Heraklion, Crete
// 04c. languages
Spoken Languages
Greek
C2
Native language
English
C2
Proficient
German
B1
Intermediate
// 05. business
My Company
Karajohn
Hosting
Hosting
KarajohnHosting is my own web hosting company, built to provide reliable, fast, and secure website hosting services for individuals and businesses alike.
- Linux-based server infrastructure
- Domain management & DNS configuration
- Secure hosting with SSL certificates
- PHP, MySQL, Node.js support
- Proxmox virtualization for full isolation
- 24/7 monitoring & support
$ karajohn-ctl status
──────────────────────────
Server: ● ONLINE
Uptime: 99.9%
SSL: ✓ Active
Sites: hosted
Stack: Linux / Proxmox
Virt: LXC + VM
──────────────────────────
$ ▌
// 06. certs
Certifications & Courses
Full Stack Developer
Certification in end-to-end web application development covering both frontend and backend technologies.
Python Developer
Certification in Python development — scripting, automation, and data processing workflows.