Senior System Administrator

This is a fully remote position, open to applicants anywhere in the world.

📋 Description

• Oversee the corporate Microsoft infrastructure, which includes Active Directory, DNS, DHCP, Certificate Authority (PKI), and Group Policy.

• Manage Atlassian Jira and Confluence, the 1C/ERP application, SQL servers, monitoring, backup, Google Workspace, and Slack.

• Provide support for VDI and terminal server farms; manage domain services and certificates; patch and document systems.

• Address incidents and service requests within agreed Service Level Agreements (SLAs).

• Engage in infrastructure projects such as Active Directory domain migration, Citrix VDI replacement, application publishing, load-balancing stack replacement, Windows server upgrades, and decommissioning of legacy systems.

• Develop implementation steps, create test environments, and conduct project pilots.

• Ensure infrastructure documentation and inventory are maintained in NetBox and Confluence.

• Participate in the on-call rotation to ensure system availability.

• Collaborate with NOC, InfoSec, DevOps, and L2 Support teams.

⛳️ Requirements

• Bachelor's degree in Computer Science, IT, or a related field.

• At least 5 years of experience in administering Microsoft and VDI infrastructure.

• Successfully completed a minimum of one Active Directory domain or forest migration, ensuring object migration between domains and forests with minimal downtime.

• Experience in managing VDI or terminal access platforms in a production environment.

• Proficiency in multi-domain Active Directory Domain Services, including domains, forests, trusts, replication, FSMO, DFS, GPO, delegation, Kerberos/NTLM, auditing, and deployment of new domain controllers.

• Familiarity with ADMT/PES, SID History, dependency inventory, and phased domain/forest migration.

• Experience in DNS administration: zones, forwarders, zone transfers, and split horizon.

• Knowledge of PKI/AD CS: templates, auto-enrollment, revocation, renewal, and TLS lifecycle.

• Administration experience with Citrix or alternative VDI solutions, including deployment, golden images, troubleshooting, and Windows 11.

• Operational knowledge of Windows RDS farms, including Connection Broker, RD Gateway, Session Hosts, published applications, CAL, FSLogix, and Duo MFA.

• Experience with Windows Server upgrades, WSUS, patching, file services, Veeam backup/restore, and resolving audit findings.

• Linux administration skills with Ubuntu, AlmaLinux, CentOS/RHEL, covering systemd services, packages, users/access, logs, and troubleshooting.

• Load balancing expertise with nginx and HAProxy, encompassing reverse proxy, publishing, TLS termination, health checks, NLB, and keepalived/VRRP.

• Experience in managing Hyper-V and VMware ESXi virtualization, including VMs, hosts, datastores, and snapshots.

• Google Workspace/GCP administration capabilities, including tenants, domains, groups, SSO/OAuth, domain-wide delegation, administration, billing, GWS backup, and GCP projects.

• Proficiency in PowerShell for routine administrative tasks.

• Fluent in both Russian and English, with English proficiency at B1 (Intermediate) or higher.

• Strong communication, collaboration, problem-solving, adaptability, critical thinking, attention to detail, and customer focus skills.

• Preferred: Familiarity with Bash or Python, Terraform, Ansible, VMware Horizon, Azure Virtual Desktop, Amazon WorkSpaces, AWS/Azure/GCP, storage administration, HCI, and ITIL or other service management certifications.

🏝️ Benefits

• 28 calendar days of vacation each year.

• 7 wellness days annually.

• Bonuses up to $5000 for referring successful candidates.

• 50% coverage for professional training, international conferences, and meetings.

• Corporate discounts on English lessons.

• Health benefits, including compensation of up to $1,000 gross per year for health insurance or doctor's fees when corporate medical insurance is not available.

• Fully equipped workplace and necessary equipment provided in company offices or co-working locations.

• Reimbursement for workplace expenses up to $1,000 gross once every 3 years for eligible alternative locations.

• Internal gamified gratitude system allowing bonuses to be exchanged for merchandise, team-building activities, massage certificates, etc.

• Full-time remote work opportunity.