Senior System Administrator
1 week ago
About the Role
A leading defense company is looking for a professional and experienced
Senior System Administrator
to join a central role in our operations team. You will be responsible for maintaining, upgrading, and optimizing complex computing systems within an advanced, sensitive, and high-tech environment.
Key Responsibilities
- Infrastructure Management:
Operation, maintenance, and upgrading of servers and infrastructures in both
Windows and Linux
environments. - Virtualization:
Managing VMware and Hyper-V infrastructures, including setup, maintenance, and backups. - Directory Services:
Managing Active Directory, GPO, DNS, and DHCP services for internal organizational communication. - Storage & Backup:
Ownership of storage systems, complex backup solutions, and replication. - Monitoring:
Real-time monitoring and troubleshooting of complex infrastructure issues. - Cross-Team Support:
Providing technical support to DevOps, R&D, and Cyber Security teams. - Project Leadership:
Leading infrastructure projects, technology upgrades, and implementing new organizational solutions.
Requirements
- Experience:
3–5 years of experience as a System Administrator in a large or defense-oriented organization. - OS Expertise:
Hands-on experience with Windows Server and Linux (RedHat/Ubuntu/Oracle). - Virtualization:
Proven experience with
VMware (ESXi, vCenter)
–
Mandatory
. - Networking & AD:
Deep understanding of Active Directory, GPO, user management, permissions, and network protocols. - Security Clearance:
Valid Security Clearance (Level 3) –
Mandatory
.
Advantages (Nice to Have)
- Backup Solutions:
Experience with Veeam or Commvault. - Storage:
Hands-on experience with NetApp, Dell EMC, or HPE systems. - Monitoring Tools:
Familiarity with Zabbix, SolarWinds, or Nagios. - DevOps & Automation:
Basic knowledge of Docker, Kubernetes, and scripting (Bash/PowerShell). - Cloud:
Experience with AWS. - Databases:
Basic knowledge of SQL and MongoDB. - Networking:
Experience with Juniper (specifically routers/switches). - Experience working in
isolated (Air-gapped) environments
.
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