PANAGIOTIS ZERMPINOS
IT System Administrator, moving into Cybersecurity
Run on-premises and remote infrastructure for Mobics S.A. and its external partners: servers, networks, firewalls, endpoints, backups and monitoring. Before that, 3 years keeping critical law enforcement infrastructure running nationwide: 50+ forensic instruments, a €3M project, and 99.5% uptime across Greece. Moving deeper into cybersecurity, backed by a self-hosted Linux and Docker network security stack built and documented first-hand.
Impact
Experience
IT System Administrator
Infrastructure and core IT services for Mobics and its external partners, on-premises and remote.
- Infrastructure: On-premises and remote servers, networks, Zyxel firewalls, endpoints and backups across company and partner environments
- Core IT Services: Administration and support of the services the business runs on day to day, including Microsoft 365
- Monitoring: Standing up monitoring and alerting with Zabbix, Grafana and Prometheus across internal and partner-facing services
Application & Technical Support Engineer
End-to-end technical operations for a ~€3M national law enforcement project and biomedical systems across Greece.
- Critical Infrastructure: Sole technical owner of 50+ criminal photography instruments nationwide, maintaining 99.5% uptime with same-day incident response
- L1/L2 Support: Rapid triage and resolution for security-critical systems in law enforcement environments
- Security & Compliance: Owned Anti-Bribery Policy and maintained multi-ISO standard compliance (ISO 27001, 9001, 13485)
- Hardware & Logistics: Hardware lifecycle management and logistics coordination for nationwide field deployments; vendor sourcing and procurement
- Client Relations: Primary technical liaison for law enforcement clients and dealer partners; trained 250+ police officers on forensic instrumentation; prepared product collateral and provided pre-sales and after-sales support
Mechanical Engineer, External Partner
Office-based investigation of electricity theft cases across Greece's national distribution network. Processed around 20 cases per day (roughly 3x the team average) in an 8-person team, identifying theft sources and losses across residential and commercial accounts.
Electrical Systems Technician
Executed UPS, PV, and electrical automation installations across 9 industry verticals (Defense, Maritime, Healthcare, Energy, Telecom and more) under ISO 14001 and ISO 45001 compliance. Delivered projects for enterprise clients including Cisco and Cordia in a 5-person team reporting directly to CTO.
Technical Skills
IT Operations & Support
Networking & Security
Development & Automation
Quality & Compliance
Education
Integrated Master's in Mechanical Engineering
Five-year integrated master's programme covering mechanical systems, thermodynamics, energy engineering, and applied data analysis.
Thesis: Energy performance evaluation of solar-assisted heat pump with photovoltaic-thermal (PVT) collectors for residential dwellings in Greece. Combined TRNSYS thermal simulation with MATLAB data analysis to model and optimise system configurations across Greek climate zones.
Projects & Learning
Home Network Security & Infrastructure
APR 2026 - PRESENT
Self-hosted five-container Docker stack on a Raspberry Pi running DNS, VPN and home automation for a 12-device household. Recursive DNSSEC-validating resolver so no upstream provider sees household queries, 362k blocked domains, and both DNS-over-TLS and DNS-over-HTTPS bypass routes closed at the router. Seven IoT devices segmented to zero internet egress with local control intact, after DNS blocking alone left 576k refused cloud callbacks in 30 days. Default-deny nftables host firewall, WireGuard remote access, and pull-only nightly backups. Documented as a 33-note runbook set with a disaster-recovery procedure verified against a rebuild checklist.
Armani Katehano Club Platform
MAR 2026 - PRESENT
Full-stack web application for a competitive basketball club in active play. The public dashboard tracks 13 players across PPG, RPG, APG, and efficiency ratings, with live game results, standings, season-vs-all-time toggles, and a team leaderboard. Backed by a multi-portal architecture: an admin portal for full CRUD data management and a coach portal for roster announcements and match email distribution.
Boot.dev: Back-end Developer Path
JUN 2026 - PRESENT
Working through the Back-end Developer Path (Python & Go). Completed Python (fundamentals + OOP), Linux, and Git with hands-on projects (a Python AI agent, Bookbot, and an Asteroids game). Currently working through Go, functional programming, data structures & algorithms, and Docker.
Personal Linux Security & Hardening
MAR 2025 - PRESENT
Daily-drives Linux as primary OS with regular Lynis security audits. Applied hardening practices to personal machines, covering common attack surfaces and misconfigurations.
Security Labs (learning): HackTheBox & TryHackMe
FEB 2025 - PRESENT
Working through beginner-level HackTheBox machines and TryHackMe rooms to build practical security fundamentals: enumeration, privilege escalation, and working with known exploits.
Advent of Code 2024 & 2025
DEC 2024, DEC 2025
Annual algorithmic programming challenge solved in Python. 9 days in 2024, 8 days in 2025. Covers graph traversal, dynamic programming, parsing, and optimisation.
100 Days of Code: The Complete Python Bootcamp
MAY 2023 - JUL 2023
Intensive Python programming course by the London App Brewery, covering automation, scripting, APIs, data processing, and machine learning with PyTorch. Applied to real-world scenarios including system automation tasks.
Get In Touch
I work across infrastructure, networks, and security operations, on-premises and remote, with a growing focus on cybersecurity. If that overlaps with what you're building, let's talk.