Marin Pesa
> IT Systems Integrator_
Building rock-solid IT infrastructures, exploring backend development on the side.
About Me
IT Systems Integrator with hands-on experience building and administering IT and network infrastructures. Independently responsible for 50-100 client sites in the field, mainly medical practices and SMBs. Specialised in firewall implementation, Microsoft Azure & Intune, virtualisation with Proxmox VE, and site-to-site networking. Structured, solution-oriented approach with a strong focus on the client.
Experience
IT Systems Integrator
IT-Sued
07/2025 – Present · Oberessendorf, BW
- ›Independently managing 50–100 client sites as primary technical contact for medical practices and SMBs
- ›Planning, configuring, and commissioning complete network infrastructures (switching, routing, VLANs, VPN, site-to-site)
- ›30+ firewall implementations and migrations with Securepoint, WatchGuard, and UniFi
- ›Microsoft Azure & Intune administration, device enrollment (Windows, macOS, Android), user management, policy configuration for ~100 devices
- ›Building virtualisation environments with Proxmox VE, VM migrations (Hyper-V → Proxmox), backup strategies with Proxmox Backup Server + Synology NAS
- ›Windows Server & macOS/iOS administration via Apple Business Manager
Apprentice, IT Systems Integration
IT-Sued
2022 – 2025 · Biberach, BW
- ›IHK final project: planning and building a complete network infrastructure for a medical practice, from concept to commissioning and documentation
- ›Gained solid knowledge in networking, server administration, virtualisation, and IT security
Skills
Network & Infrastructure
Server & Virtualisation
Cloud & MDM
Development
Education & Courses
FOS BOS Memmingen
International Business Studies
BBZ Memmingen
Secondary School, Business & Languages
Boot.dev
Backend Developer Career Path
Languages
Projects
Things I've built and experimented with.
AI-Agent
An autonomous AI agent built with Python and Google Gemini. Designed to handle multi-step tasks using tool calls and conversational reasoning.
Asteroids
A Python recreation of the classic Asteroids arcade game. Built to practice game-loop logic, collision detection, and object-oriented design.