System Administrator (Zabbix Linux Windows)

We're hiring a hands-on System Administrator to manage and monitor enterprise infrastructure for multiple clients in a managed services (MSP) environment. You'll own Zabbix-based monitoring, keep Linux and Windows estates healthy, and lead incident resolution end-to-end.

Responsibilities:

• Install, configure, administer, maintain, and optimize Zabbix monitoring environments.
• Configure Zabbix hosts, templates, triggers, alerts, dashboards, discovery rules, proxies, and integrations.
• Configure and troubleshoot SNMP-based monitoring for servers and network devices.
• Support monitoring platforms such as Zabbix, SolarWinds, and/or Nagios.
• Install, configure, patch, maintain, and troubleshoot Linux and Windows Server environments.
• Administer Active Directory, Group Policy, DNS, and DHCP.
• Administer VMware vSphere/ESXi and/or Proxmox environments.
• Support Docker and containerized environments.
• Develop automation using Bash/Shell and PowerShell.
• Support networking services, including TCP/IP, DNS, DHCP, SNMP, VPNs, routing, switching, and firewalls.
• Support MySQL/PostgreSQL databases and related applications.
• Administer Microsoft 365, Entra ID, Intune, Exchange Online, and Teams.
• Provide Tier 2/Tier 3 infrastructure support and participate in incident and root cause analysis.
• Create technical documentation, SOPs, runbooks, and system diagrams.
• Work with engineering, networking, security, and managed services teams to resolve complex issues.
• Identify opportunities for automation, monitoring, reliability, and continuous improvement.

Requirements:

• Mandatory hands-on Zabbix administration experience, including installation, configuration, templates, triggers, alerting, SNMP, dashboards, proxies, and integrations.
• Strong Linux and Windows Server administration experience.
• Strong knowledge of Active Directory, DNS, DHCP, and SNMP.
• Experience with VMware vSphere/ESXi and/or Proxmox.
• Experience with Docker/containerized environments.
• Scripting experience with Bash/Shell and PowerShell.
• Experience with Git and GitHub/GitLab.
• Experience working with APIs and system integrations.
• Working knowledge of MySQL and PostgreSQL.
• Experience with Microsoft 365, Entra ID, and Intune.
• Good understanding of networking, VPNs, routing, switching, and firewalls.
• Strong troubleshooting and root-cause analysis skills.
• Strong documentation and communication skills. Qualifications
• Minimum 5 years of hands-on systems administration or infrastructure experience in an enterprise, MSP, managed services, or similar IT environment.
• Mandatory to have Zabbix Administration experience with the ability to install, configure, maintain, and troubleshoot Zabbix environments.
• Mandatory to have experience working in an MSP/managed services environment supporting multiple customer environments.
• Strong experience supporting production infrastructure.
• Experience with Linux and Windows Server administration.
• Experience with monitoring platforms such as Zabbix, SolarWinds, and/or Nagios.
• Experience with virtualization, containers, scripting, APIs, and enterprise infrastructure.
• Familiarity with Azure/AWS and security monitoring is a plus.
• Understanding of ITIL, incident management, and change management is a plus.
• A bachelor's degree in computer science, IT, engineering, or a related discipline is preferred. Equivalent experience may be considered.
• Ability to work independently, manage multiple priorities, and support a fast-paced managed services environment.
• Strong written and verbal communication skills. Flexibility to support other shifts when required.

Good to Have:

• Certifications: RHCSA/RHCE, Microsoft (AZ-104 / MS-102), VCP, or Zabbix Certified Specialist.
• Exposure to Kubernetes, Ansible, or Terraform.
• Experience with ITSM tools such as ServiceNow, Jira Service Management, or ConnectWise.