> about_me
I'm a network engineer and cybersecurity analyst based in Greece, with a purple team mindset — I think like an attacker, defend like an engineer.
My core is networking: MikroTik infrastructure, complex VLANs, VPN tunnels, BGP, OSPF, QoS, and full network automation. On the security side I run authorized assessments — web app, wireless, infrastructure, plus social engineering and physical access (badge cloning, BadUSB, pretexting) — then stay to harden what I found.
In the field I work across the full RF spectrum (12.5KHz–90GHz): LoRa, wMBUS, microwave P2P links, WiFi deployments, antenna alignment, and spectrum analysis. I also handle fiber splicing, PON activation, CCTV integration, smart home energy automation, and photovoltaic installations.
On the dev side I build full-stack applications with React, Next.js, C#, and Python — backed by Docker, MSSQL, and PostgreSQL — and integrate AI where it genuinely adds value. Down at the hardware level I design and build complete systems: custom workstations, watercooling, servers, embedded devices with RPi and Arduino, and IoT deployments planned with GIS from site survey to activation.
If it runs on electrons, I've probably worked on it.
terminal://session
$ whoami ioannis $ cat roles.txt > Network Engineer (MikroTik / VLAN / BGP) > Cybersecurity Analyst (Purple Team) > Wireless Telecoms (Microwave / LoRa / RF) > Full Stack Developer (TypeScript / C# / Python) $ cat also.txt IoT & embedded · CCTV · fiber/PON · PV & energy automation $ locate passion /usr/bin/hacking /usr/bin/building /usr/bin/deploying /field/antenna_alignment /lab/security_hardening $ _
> skills_
Offensive Security
- Penetration Testing
- Web App Security Testing
- SQL Injection Assessment & Remediation
- Exploitation · Privilege Escalation
- Network Scanning (Nmap)
- Burp Suite · Metasploit
- Kali Linux · Wireshark
- Nessus · OWASP ZAP
Social Engineering & Red Team
- Pretexting & Impersonation
- Elicitation & Trust Building
- Phishing / Vishing Campaigns
- RFID / NFC Cloning & Access Bypass
- Rubber Ducky / BadUSB (HID Injection)
- Physical Access Testing
- OSINT
- Attack Simulation · MITRE ATT&CK · TTPs
Defensive & Detection
- Threat Detection
- Network Monitoring & Alerting
- SIEM · Log Analysis
- Incident Response
- IDS/IPS (Suricata)
- Detection Engineering
- Security Hardening
- Grafana + Prometheus
Networking
- OSPF Multi-Area Design
- BGP Peering & Policy Control
- MikroTik / RouterOS
- Complex VLANs · 802.1Q
- VPN (IPsec / WireGuard / OVPN)
- 802.1X / NAC
- QoS Traffic Shaping
- Network Automation (Python)
Full Stack Dev
- JavaScript · TypeScript
- React · Next.js
- C# / .NET
- Python
- Node.js · Nest.js
- PostgreSQL · MSSQL
- Docker · Proxmox
- AI Integration
RF, Field & Hardware
- Microwave P2P Links (18GHz–90GHz)
- LoRa · wMBUS (868MHz)
- WiFi (802.11 a/b/g/n/ac/ax)
- SDR · Spectrum Analysis
- Raspberry Pi · Arduino · ESP32
- IoT & CCTV Deployment
- Fiber Splicing · PON · OTDR
- Photovoltaic Systems · GIS
> selected_projects_
EM Spectrum Explorer
Interactive WebGL atlas of the whole spectrum — 40 decades (10⁻¹⁴–10²⁶ Hz) on one logarithmic axis. Educational mode: 130 phenomena, each with a scientific-confidence rating, cited sources and a per-claim “real science vs myth” breakdown. Professional mode: ITU sub-bands and 57 technology allocations, each citing its governing standard — 3GPP, IEEE, ETSI, ITU-R — and where it actually applies. Clickable markers with density badges, search, deep links, keyboard and screen-reader access.
MCQ Trainer
Multiple-choice question trainer with pre-built Networking / Cybersecurity / SQL / IT sets, bring-your-own q_*.json import, exam mode, practice mode, timer, and a built-in AI prompt to generate questions from any book or text. Offline-capable PWA, also shipped as a native Android APK.
SQL Injection: From Discovery to Remediation
A purple-team walkthrough — finding the injection, proving impact (auth bypass, UNION & blind extraction), then closing it with parameterized queries, least privilege, and detection. Authorized home-lab exercise.
Social Engineering & Physical: Breaching the Human Perimeter
A full-scope authorized engagement — reconnaissance, the human layer, physical access, and the remote angle — and, above all, the awareness, access-control & detection fixes that close every gap.
> contact_
Open to security collaborations, network infrastructure projects, IoT deployments, freelance dev work, and interesting problems — remote or on-site in Greece.
Based in Greece · Available for remote work
Self-taught with real deployments > paper cert