Arsenii Butish
Arsenii Butish

Infrastructure Engineer and Systems Administrator

Open to offers · Member since 21 Oct 2026
Location
Batumi, Georgia
Desired salary
Unspecified
Work preference
Remote Only / Full Time, Part Time, Contract, Freelance, Temporary
Experience level
Mid

About

Professional summary

I am an Infrastructure Engineer and Systems Administrator with more than three years of experience supporting high-availability Linux and Windows environments. I specialize in L2/L3 infrastructure operations, virtualization, network administration, and enterprise security.

I have supported MSP and financial-services environments serving more than 500 users, including regulated and air-gapped infrastructure operating under Central Bank of Russia security requirements. I am experienced in maintaining resilient systems while minimizing downtime and operational risk.

My virtualization background includes VMware ESXi, Proxmox VE, Hyper-V, and physical-to-virtual migrations. I also manage Windows Server, Active Directory, GPO, DNS, DHCP, Linux servers, and server hardware.

I build secure and observable infrastructure using FortiGate firewalls, VPNs, Zabbix monitoring, Keycloak SSO, Kaspersky Security Center, and multi-vendor networking equipment. I have maintained backup and disaster-recovery pipelines protecting more than 50 TB of critical data.

I automate operational workflows with Python, Bash, and PowerShell, and use Docker to package internal tools and services. I am a native Russian speaker with advanced English proficiency and am available for worldwide remote B2B contracts.

Notice period: Immediately

Skills

28 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Application Utilities

Data Stores

Languages & Frameworks

Experience

Career history

System Administrator & Infrastructure Engineer National Credit Ratings (NCR, RBC Group subsidiary)

I support infrastructure for a regulated financial rating agency operating within an isolated security perimeter under Central Bank of Russia information-security policies.

I deployed centralized Zabbix monitoring to replace separate shell and cron health checks, enabling proactive alerting and incident response. I also configured Keycloak SSO for Nextcloud and Kontur Talk using OIDC/SAML.

I administer Proxmox VE and VMware ESXi virtualization, perform P2V migrations, maintain Veeam and Cyberprotect backup pipelines protecting more than 50 TB of critical data, and secure remote access with FortiGate policies, NAT, DMZ routing, IPsec, and SSL-VPN tunnels.

I automate infrastructure workflows with Python, Bash, and PowerShell, and containerize internal tools and services with Docker.

Technical Support Specialist & Systems Engineer LanServ

I delivered L2/L3 systems and network administration within an IT managed-services-provider environment supporting multiple corporate client environments and more than 500 end users.

I administered Windows Server, Active Directory domains, GPOs, user permissions, and VMware ESXi, Proxmox VE, and Hyper-V platforms. I configured and maintained Cisco, MikroTik, Ubiquiti, and Keenetic network equipment while monitoring performance through Zabbix and Zyxel Nebula.

I coordinated physical server and network relocations for office moves and data-center migrations with minimal service interruption. I also managed Kaspersky Security Center, integrated LanKey and LanCloud services, and deployed Multifactor 2FA.

Systems Administrator & Automation Developer Business Champions League

I maintained the technical infrastructure for a corporate esports league organizer, including low-latency tournament server environments and live-event technology.

I developed Python Discord bots to automate participant verification, role assignment, dynamic tournament brackets, and live score processing.

I resolved live streaming and broadcasting incidents promptly to support reliable tournament operations.

Education

Learning history

State University of Managment

Bacherol's degree, Law

Classical jurisprudence

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