Position: Senior System Administrator
Company: Diceus
Category: Sysadmin
Experience required: 5y
English level: upper

We are seeking a highly skilled and experienced System Administrator to join our team. The successful candidate will be responsible for the administration of various server and desktop operating systems, including Windows (Win10-11, Server 2016-2019), Linux (Ubuntu, Debian), FreeBSD, and MacOS.

**Responsibilities:**

Windows domain administration, including Active Directory, user management, group policy settings, roaming profiles, user folder redirection, and print server.
Administration of a terminal farm with balancing.
Administration of file servers on Windows with differentiation of access rights.
Ethernet cabling administration.
Wi-Fi network administration with seamless roaming (Ubiquity).
Administration of pfsense, Mikrotik routers (DHCP, DNS, VPN, VLAN) and managed switches (Cisco).
Administration of server virtualization (VMware ESXi, Proxmox), Building small HA clusters.
Site-to-Site IPSec VPN administration between physical and virtual cloud networks.
Organization of remote work of users (OpenVPN and VMware SSL VPN Plus).
Support for hybrid infrastructure using public clouds (VMware vCloud and KVM Cloud solutions).
Mail server administration (Zimbra).
IP telephony server administration (Asterisk).
Knowledge of various office and application programs, mobile platforms Android, iOS.
Administration of accounting software (1C, Medoc).
Diagnostics and block repair of PC.
Support for the computer park, peripheral and office equipment.

**Requirements:**

Bachelor's degree in Computer Science, Information Technology or related field.
Minimum of 5 years experience as a System Administrator.
Proven experience with Windows (Win10-11, Server 2016-2019), Linux (Ubuntu, Debian), FreeBSD, and MacOS.
Experience with Windows domain administration, including Active Directory, user management, group policy settings, roaming profiles, user folder redirection, and print server.
Experience with Wi-Fi network administration with seamless roaming (Ubiquity).
Experience with server virtualization (VMware ESXi, Proxmox) and building small HA clusters.
Knowledge of site-to-site IPSec VPN administration between physical and virtual cloud networks.
Knowledge of OpenVPN and VMware SSL VPN Plus for remote work of users.
Experience with mail server administration (Zimbra) and IP telephony server administration (Asterisk).
Excellent problem-solving and communication skills.
Ability to work independently and as part of a team.
Proven ability to diagnose and repair PC and office equipment.
If you are an experienced System Administrator with a passion for technology and a desire to work in a challenging and dynamic environment, please apply with your resume and cover letter.