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VITALII MARCHENKO
System Administrator / DevOps Engineer

Ukraine • [open contact info](look above in the "contact info" section) • Telegram: @m_a_r_c_h_e_n_k_o

⚙️ Professional Summary
Focused on high-load systems, AWS automation, and secure network architecture.

 11+ years of experience in server administration, virtualization (KVM, Proxmox), and
infrastructure automation.
 Strong background in Linux systems (AlmaLinux, Ubuntu, Debian) and AWS infrastructure.
 Experienced in large-scale environments (20,000+ VPS, 1,200+ dedicated servers).
 Proven expertise in networking, VPN, SSL, and system security.
 Skilled in CI/CD pipelines, Terraform, and DevOps automation.

⚙️ Technical Expertise
Operating Systems: AlmaLinux, Ubuntu, Debian, CentOS, macOS, Windows

Virtualization: KVM, Proxmox, OpenVZ

Cloud Platforms: AWS, DigitalOcean, Hetzner

Automation: Terraform, Bash, GitLab CI/CD

Networking & Security: VPN, SSL, Firewall (iptables), Cisco Meraki, DNS, DHCP

Web & Databases: Nginx, Apache, PHP-FPM, MySQL, MariaDB

Version Control: Git, GitLab, GitHub

⚙️ Professional Experience
Unix System Administrator — S‑Pro | Dec 2019 – Present

 Designed and implemented infrastructure deployment using Terraform for AWS
environments.
 Built CI/CD pipelines for development teams, improving release reliability and speed.
 Managed and maintained multi-tier Linux environments (AlmaLinux, Ubuntu, Debian).
 Automated server configuration and deployment workflows with Bash and Ansible.
 Configured VPNs, SSL, and security groups across cloud infrastructure.
 Tuned Nginx, PHP-FPM, and MySQL/MariaDB for performance optimization under high load.
 Provided continuous infrastructure monitoring and incident response.
 Supported developers in DevOps processes (GitLab CI/CD, infrastructure as code).
 Built complete IT infrastructure for a 4-floor office (2,000 m²).
 Deployed a local network and Cisco Meraki Wi-Fi with seamless roaming.
 Installed and configured a video surveillance system with centralized management.
 Implemented structured cabling and ensured fault-tolerant network design.

Unix System Administrator — NTX | Oct 2018 – Dec 2019

 Administered a VPS park of over 20,000+ instances.
 Provided L1/L2 support for 1,200+ dedicated servers.
 Managed and optimized virtualization via KVM and OpenVZ platforms.
 Handled network routing, firewalling, SSL management, and VPN connectivity.
 Implemented automated monitoring and backup systems to improve reliability.
 Reduced infrastructure downtime by improving incident detection workflows.
 Trained junior support staff and standardized internal procedures.

Technical Support / System Administrator — Amgrade | 2015 – Oct 2018

 Managed Active Directory accounts, backups, and endpoint security.
 Provided daily operational support and resolved incidents efficiently.
 Documented infrastructure topology, access policies, and troubleshooting procedures.
 Collaborated with management to plan IT budget and hardware lifecycle.

⚙️ Education

Zaporizhzhia National Technical University — Specialist Degree in Information Security
(2010–2015)

⚙️ Languages
English — Intermediate (technical documentation, correspondence)

Ukrainian / Russian — Native

⭐Key Achievements

 Built a new 2,000 m² office network with full Wi-Fi coverage and Cisco Meraki roaming.
 Reduced infrastructure downtime by 30% through proactive monitoring and automation.
 Deployed Terraform-based infrastructure as code in AWS, standardizing environment setup.
 Automated server provisioning processes, cutting deployment time by over 50%.