mistermobilka.com

About

Artyom Ashminevich

Systems Administrator · Cloud Infrastructure Engineer (in transition)

Systems administrator with about one year of commercial experience running Windows-centric infrastructure for roughly 120 users, moving deliberately from operations into cloud and DevOps engineering.

Day to day I run Active Directory, Group Policy, VMware virtualization, MikroTik networking, and PowerShell automation; on my own time I build the cloud and container skills the next step needs, including a self-hosted k3s cluster on AWS and CI/CD fundamentals.

Self-taught, with a strong mathematics background and a habit of debugging problems down to the protocol level rather than stopping at the symptom. Comfortable reading technical documentation and working in English.

Get in touch

How I work

Three habits, with the evidence

Anyone can claim these. Each one below is followed by the specific thing that happened.

  • 01

    Root cause, not symptom

    A workstation that could not be reached remotely turned out to be booting before the domain controller answered, falling back to the Public network profile and silently blocking SMB on 445. Fixing the symptom would have meant reimaging it.

  • 02

    Automate the second time

    Enabling PSRemoting on one machine is a command. Doing it across an organizational unit — including the machines you cannot reach remotely yet — is a script with PsExec, WMIC, and a GPO scheduled task as fallbacks.

  • 03

    Claim only what is true

    The skills page marks every technology as Production, Working knowledge, or Learning project. I would rather be trusted on the first list than flattered on all three.

Experience

Where I have done this

Systems Administrator — Micros

August 2025 – Present current · Tashkent, Uzbekistan

Micros supplies printing and weighing equipment and software licensing, including Microsoft Azure.

I am responsible for the server and network infrastructure supporting roughly 120 users.

  • Run the Windows environment for about 120 users: Active Directory, Group Policy, DNS, and DHCP, plus new-workstation provisioning.
  • Administer a VMware ESXi server cluster through vCenter and vSphere, with Veeam for backup and iSCSI/LUN storage.
  • Manage MikroTik networking including routing, NAT, firewall, and VPN, and configured a dual-WAN setup with an Iskratel GPON ONT; diagnosed IPsec tunnel failures across Kerio Control and MikroTik down to source-address and NAT-ordering root causes.
  • Administer Kerio Control and Kerio Connect for gateway and mail services.
  • Automate routine operations in PowerShell, including a standing connectivity monitor that detects packet loss above a set threshold and outages and sends email alerts, and fleet-wide PSRemoting rollout.
  • Operate ManageEngine ServiceDesk Plus, including diagnosing an NTLM SSO redirect loop — identifying an NTLMv1-versus-v2 negotiation and directory-matching cause — and performing an administrator password reset.
  • Researched a server migration from a Fujitsu PRIMERGY RX2540 M2, including memory and drive compatibility across candidate replacement servers and the local Tashkent hardware market.

Credentials

Certifications & education

  • Microsoft 365 Certified

    Earned 2026

  • Microsoft Azure Administrator (AZ-104)

    In progress

Education

High school graduate; no further formal education.

Self-taught in IT, with a strong mathematics foundation from dedicated mathematics teachers and former mathematics olympiad participation.

Languages

Working languages

  • Russian

    Native / fluent

  • English

    Technical reading and conversational working level