System Administrator – Linux & Windows

About the role

RAD is seeking an experienced System Administrator to design, implement and support the company’s enterprise infrastructure across Linux, Windows and virtualization platforms. The role ensures high‑availability, secure and scalable services while driving automation, monitoring and continuous improvement. You will work closely with DevOps, Engineering and business teams and report to the IT Infrastructure Manager.

Key responsibilities

• Administer and maintain enterprise Linux and Windows Server environments.
• Manage Nutanix AHV infrastructure, including Prism Central/Element, VM lifecycle, storage, networking, snapshots and capacity planning.
• Install, configure, patch, migrate and troubleshoot servers and related services.
• Administer Active Directory, DNS, DHCP, Group Policy, PKI/Certificate Services, IIS, Apache and Nginx.
• Design, implement and maintain Zabbix monitoring, creating templates, dashboards and alerts.
• Perform root‑cause analysis, vulnerability remediation and infrastructure hardening.
• Provide Tier 2/3 support for complex Linux, Windows, virtualization and networking issues.
• Participate in after‑hours maintenance, disaster‑recovery testing and security initiatives.

Required profile

• 5+ years of enterprise infrastructure administration experience.
• Strong Linux and Windows Server administration skills.
• Hands‑on experience with Nutanix AHV and related management tools.
• Proficiency with Active Directory, DNS, PKI, SSL/TLS, IIS, Apache and Nginx.
• Experience using Zabbix and automation tools such as Ansible, Bash, PowerShell and Python.
• Excellent troubleshooting, communication and teamwork abilities.
• High‑level English proficiency for interaction with international stakeholders.

Required skills

• Linux
• Windows Server
• Nutanix AHV / Prism Central
• Active Directory
• DNS, DHCP, Group Policy
• PKI / SSL‑TLS / Certificate Management
• IIS, Apache, Nginx
• Zabbix monitoring
• Ansible
• Bash scripting
• PowerShell
• Python