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CONTACT
Kiril Korniienko Phone / WhatsApp: [open contact info](look above in the "contact info" section)
Telegram: @KirilKorniienko
System Administrator [open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)
Ukraine · Remote / Relocation

PROFILE
System Administrator with experience managing Windows and Linux infrastructure for a mid-sized corporate
environment (~250 users, ~30 servers). Skilled in VPN deployment, Active Directory administration, monitoring,
automation scripting, and email services. Passionate about Linux and actively developing expertise toward a future
in cybersecurity.

WORK EXPERIENCE
■ System Administrator - TPC ASTRA COSMETIC LTD January 2024 – September 2026
• Managed IT infrastructure for ~250 users and ~30 Windows/Linux servers, ensuring high availability and
reliability.
• Deployed, configured, and maintained Windows and Linux servers.
• Managed and supported network infrastructure, including DNS, DHCP, VPN, and remote access services.
• Configured and maintained secure remote access solutions using OpenVPN and WireGuard.
• Administered Active Directory, user accounts, group policies, and access control systems.
• Monitored network and server performance using Zabbix and Wazuh (SIEM).
• Implemented and maintained DNS services using Dnsmasq.
• Installed, configured, and supported new hardware, workstations, servers, and network equipment.
• Participated in IT equipment procurement, hardware selection, and deployment.
• Diagnosed and resolved server, network, and workstation issues.
• Maintained and supported email services based on Postfix.
• Automated administrative tasks using Bash and Python scripts — one script saved developers 30–40 minutes
of manual work per execution.
• Performed system updates, security hardening, backup management, and recovery procedures.
• Provided technical support to end users and ensured reliable operation of IT infrastructure.
• Maintained technical documentation and infrastructure records.

EDUCATION AND TRAINING
■ Bachelor's Degree in Computer Science and Information Technologies 2019 – 2024
Luhansk Taras Shevchenko National University

Studied core areas of computer science including operating systems, computer networks, databases, programming
fundamentals, and information systems. Gained practical understanding of system administration, networking
principles, and IT infrastructure. Completed coursework related to software development, system architecture, and
cybersecurity basics.

SKILLS LANGUAGES

Operating Systems: • English (B1/B2)
• Windows (installation, administration, troubleshooting) • Ukrainian (Native)
• Ubuntu / Linux (server & desktop administration)

Scripting & Programming:
• Python (automation, scripting) CAREER FOCUS
• Bash (Linux automation) Deeply interested in Linux systems and
• Assembly (basic understanding / low-level programming) infrastructure. Actively expanding knowledge
Monitoring & Security: in cybersecurity with the goal of transitioning
• Zabbix (system and network monitoring) into an IT Security or Linux-focused role.
• Wazuh (security monitoring / SIEM basics) Planning to pursue relevant certifications
(e.g., CompTIA Linux+, Security+) in the near
Networking & Remote Access: future.
• VPN configuration (OpenVPN, WireGuard)
• Network troubleshooting (TCP/IP, DNS, DHCP concepts)

Databases & Applications:
• SQL (basic database operations, queries)
• 1C system support and maintenance

System Administration:
• User and system administration
• IT infrastructure support and maintenance
• Hardware setup and troubleshooting
• Software deployment and system configuration