Experience
System Administrator & Developer
ICT Solutions, s.r.o.
09/2019 — present
Košice, SK
- Linux server management (Debian/Ubuntu/RHEL), Docker Swarm clusters and Proxmox hypervisors
- Development of internal and commercial applications: CRM, network device management and other tools
- Building custom Docker images and extending CI/CD pipelines for internal services
- ISP DNS stack: PowerDNS Auth, PowerDNS Recursor, dnsdist
- Customer access services: ISC KEA DHCP, FreeRADIUS (PPPoE authentication)
- Working with GPON access networks: configuration and management of OLT devices
- Network device monitoring via SNMP using LibreNMS
- Server and application monitoring: Prometheus, Alertmanager, Grafana, Loki
Network & System Administrator
GeCom, s.r.o.
09/2017 — 09/2019
Michalovce, SK
- Management and development of network infrastructure for a regional ISP in the Zemplín area
- Configuration and monitoring of routers, switches and firewalls (Mikrotik, Cisco, Huawei, UBNT)
- WiFi network and radio link management (UBNT airMAX, point-to-point, point-to-multipoint)
- Working with GPON access networks: configuration and management of OLT devices
- Virtualization infrastructure management: VMware ESXi and vCenter
- Linux server administration and internal systems support
- Outage resolution, network optimization and end-customer support
Network Technician (project)
ICT Solutions, s.r.o.
06/2017 — 08/2017
Košice, SK
- Migration project: on-site replacement of Avaya devices with Cisco access switches
- Preparing and manually loading Cisco switch configurations via terminal
- First exposure to production IT environment after studies at the University of Management
Education
Mgr. — Management
University of Prešov, Faculty of Management
2015 — 2017
Bc. — Management
University of Prešov, Faculty of Management
2012 — 2015
Skills
🌐 Networking
TCP/IP BGP OSPF VLANs VPN Firewall Mikrotik Cisco IOS Huawei VRP Fortinet Edge-Core UBNT airMAX
🐧 Linux
Debian Ubuntu RHEL systemd bash iptables nftables SSH cron
🖥️ Infrastructure
Proxmox KVM LXC VMware ESXi vCenter Docker Swarm
📊 Monitoring
Prometheus Alertmanager Grafana Loki LibreNMS SNMP syslog
⚙️ Automation & code
Ansible Python Bash PHP TypeScript Git CI/CD
🌍 Web development
CodeIgniter 4 HTMX Alpine.js FrankenPHP PHP-FPM
🌍 Languages
Slovak Native
English Technical / B2