I have successfully coordinated the work of IT department, ensuring efficient workflow.- Server Administration and Virtualization: I have extensive experience in administering servers, including Active Directory, DHCP, DNS, terminal servers, file servers, and FTP. Furthermore, I have implemented server virtualization using Hyper-V and VMware ESXi, managing 20 virtual servers. I have also set up Hyper-V replication and created a high availability infrastructure, ensuring the continuous… Show more I have successfully coordinated the work of IT department, ensuring efficient workflow.- Server Administration and Virtualization: I have extensive experience in administering servers, including Active Directory, DHCP, DNS, terminal servers, file servers, and FTP. Furthermore, I have implemented server virtualization using Hyper-V and VMware ESXi, managing 20 virtual servers. I have also set up Hyper-V replication and created a high availability infrastructure, ensuring the continuous operation of critical services and local area network across 27 branches in the Murmansk region.- Medical Information System Administration: I have successfully administered medical information system, overseeing it's set up, maintenance, and security.- Telephony and Communication Systems: I have served as the administrator for the AVAYA IP Office 500 IP PBX, managing the setup and maintenance of the organization's telephony infrastructure. This includes implementing IP telephony, which resulted in a 40% reduction in communication costs. Furthermore, I successfully introduced a video conferencing system, significantly reducing costs of approximately 90% for employee transportation and enabled convenient online communication throughout the Murmansk region.- Zabbix: I successfully set up a Zabbix monitoring system, which effectively alerted stakeholders to critical status changes in over 200 devices through instant messenger notifications.- Redundant power supply system: I designed and implemented a redundant power supply system for critical equipment, significantly increasing autonomy from 40 minutes to 20 hours, ensuring uninterrupted operations.- Scalability: I played a key role in scaling the IT infrastructure from two old servers without a domain structure to 11 physical servers and 20 virtual servers with replication of critical services. This expansion enabled seamless operations and supported the growing needs of a remote user base that increased from 30 to 200 individuals. Show less

1. Implementation and administration of the medical information system, creation of reports,
printed forms, creating SQL queries in PLSQL Developer.
2. Network administration (more than 400 devices), LAN design, installation, switching of active network devices, configuration of firewalls.
3. LAN unification.
4. Workstation organisation, user support.
5. Server management (AD, DHCP, DNS, terminal server, file server), server virtualisation
(Hyper-V).
6. Designing the server… Show more 1. Implementation and administration of the medical information system, creation of reports,
printed forms, creating SQL queries in PLSQL Developer.
2. Network administration (more than 400 devices), LAN design, installation, switching of active network devices, configuration of firewalls.
3. LAN unification.
4. Workstation organisation, user support.
5. Server management (AD, DHCP, DNS, terminal server, file server), server virtualisation
(Hyper-V).
6. Designing the server room, drafting the specifications. Moving and switching server equipment to a new premise.
7. Development and maintenance of the organisation's website. Show less

Working with SQL queries in a PL/SQL environment (collecting customer requirements, processing, writing queries, outputting information as printed documents)

1. Network Administration
2. Software Setup
3. Advising users
4. Preparation of documents on information security, protection of personal data.
Main achievements:
1. Domain implementation (Windows Server 2003)
2. LAN deployment (installation, DHCP configuration)
3. Configuration of a Debian based firewall