Андрій

Denezhko Andriy
About me:
System Administrator
I am a detail-oriented and proactive IT specialist with hands-on
[відкрити контакти](див. вище в блоці «контактна інформація») experience in system administration, cloud infrastructure, and
[відкрити контакти](див. вище в блоці «контактна інформація») automation. I enjoy improving system reliability, reducing manual
work through scripting, and building secure, scalable
Ukraine, Odesa
environments. I thrive in teams where logic, documentation, and
@Andres1to performance metrics drive technical decisions.

Education IT infrastructure engineer
National University Unicorn Media
04.2025 - 10.2025
“Одеська Політехніка”
Organized the full lifecycle deployment of a containerized ticketing
Specialization: Computer Science system (Python/Docker), establishing clear workflows and ensuring its
09.2023 - 06.2026
smooth adoption by the team.
Developed a Python-based alert bot to automate incident notifications
Hillel IT Course : Linux/Devops and status updates.
Orchestrated multi-container applications using Docker Compose,

Skills streamlining development environments and ensuring service
dependency management.
VIRTUALIZATION AND CONTAINERIZATION:
Deployed and configured network-attached storage (NAS) for
HYPER-V
VMWARE ESXI centralized data management.
DOCKER / DOCKER COMPOSE Monitored storage health and performance, proactively addressing
NETWORK TECHNOLOGIES: capacity and latency issues
TCP/IP
VPN (WIREGUARD, OPENVPN)
Automated DNS and certificate management via Cloudflare API:
IPSEC implemented SSL/TLS certificate auto-renewal, configured expiry
VLAN monitoring with alerting, and managed DNS records as
DNS
DHCP
code.Configured and managed Cloudflare WAF rules to protect web
CLOUD & CDN SERVICES: applications from common vulnerabilities and DDoS attacks.
CLOUDFLARE (CDN, WAF, DNS MANAGEMENT)
OPERATING SYSTEMS: System Administrator
WINDOWS SERVER / DESKTOP IphotoTeam
LINUX: UBUNTU, CENTOS
03.2024 - 04.2025
MONITORING AND TOOLS:
PROMETHEUS Administered and optimized PostgreSQL databases for CRM systems,
GRAFANA including configuring backups and performance monitoring.
DATA STORAGE SYSTEMS:
QNAP
Deployed and maintained CRM infrastructure on AWS (EC2).
PROGRAMMING LANGUAGES: Set up and maintained secure VPN tunnels (WireGuard) between central
PYTHON servers and remote terminals.
BASH SCRIPTS
Monitored traffic using Prometheus + Grafana, fine-tuned metrics and
POWERSHELL
DATABASES: alerting thresholds.
POSTGRESQL Administered Linux-based systems, applied security patches, managed
firewalls.
Performed system performance monitoring (CPU/RAM/Disk) using Grafana,
planned migrations with zero downtime.
Improved system reliability by implementing proactive monitoring and
alerting workflows.

Language Technical Support
Domashni Systemy LLC
Ukranian: Native 08.2023 - 02.2024
English: B1
Spanish: B1 Installed, configured and supported operating systems (Windows Server, Linux).
Managed user accounts and access policies (Active Directory, LDAP).
Performed initial configuration of networking equipment (Cisco, MikroTik).
Configured and verified backup systems (Veeam, rsync).
Diagnosed and resolved hardware/software issues (1st and 2nd line support).
Documented internal procedures and created guides to reduce onboarding time.
Performed component-level troubleshooting and replacement (HDD, RAM,
power supplies, motherboards).
Provided on-site and remote support for hardware issues, ensuring minimal
downtime for clients.