Senior Systems Administrator

Job summary

The Senior Systems Administrator will build, configure, and deploy Windows and Linux servers while ensuring compliance with Standard Operating Environment standards. They will also administer VMware environments and perform system maintenance activities to optimize reliability and availability.

Job details

About the Role We are seeking a highly skilled Systems Administrator / Server Infrastructure Engineer to join our IT Infrastructure team. The ideal candidate will have strong experience managing Windows and Linux environments, building and hardening servers, supporting VMware infrastructure, and ensuring reliable deployment of enterprise systems in line with organizational standards. Key Responsibilities Build, configure, and deploy Windows and Linux servers in accordance with Standard Operating Environment (SOE) standards. Install, configure, and manage Active Directory, DNS, and domain services, including domain joins and domain controller promotion. Administer and support VMware virtualized environments. Perform system hardening activities using Group Policies (GPOs) and off-domain security controls. Conduct server patching, firmware upgrades, and ongoing system maintenance activities. Monitor server performance, troubleshoot issues, and implement tuning recommendations to optimize system reliability and availability. Execute testing, validation, and production deployment activities, including go-live and Operational Readiness Evaluation (ORE) processes. Follow and maintain Standard Operating Procedures (SOPs) for server builds and infrastructure management. Support infrastructure modernization initiatives, including virtual server migrations and upgrade projects. Collaborate with cross-functional teams to ensure successful delivery of infrastructure solutions. Required Skills & Experience Strong experience with Windows Server and Linux Administration Hands-on experience with Active Directory (AD), DNS, Domain Services, Domain Join, and Domain Controller Promotion Experience managing VMware vSphere/ESXi environments Ability to build and configure systems according to SOE standards Experience with system hardening, security baselines, and GPO implementation Strong understanding of patch management, firmware updates, and server lifecycle maintenance Experience with system monitoring, performance analysis, troubleshooting, and root cause analysis Knowledge of testing, validation, and production deployment processes Experience working with SOP-driven server build and deployment practices Preferred Skills Experience with virtual server migrations and infrastructure transformation projects Exposure to enterprise monitoring and automation tools Knowledge of cybersecurity best practices and compliance frameworks

What you’ll do

The Senior Systems Administrator will build, configure, and deploy Windows and Linux servers while ensuring compliance with Standard Operating Environment standards. They will also administer VMware environments and perform system maintenance activities to optimize reliability and availability.

Requirements

Candidates should have strong experience in Windows Server and Linux Administration, along with hands-on experience in Active Directory and VMware environments. Knowledge of system hardening, patch management, and server lifecycle maintenance is also required.

Listed skills

• Validation · Preferred
• Production · Preferred
• analysis · Preferred
• Reliability · Preferred
• Active Directory · Preferred
• VMware · Preferred
• Compliance · Preferred
• DNS · Preferred
• management · Preferred
• Windows · Preferred
• maintenance · Preferred
• Linux · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• Windows Server
• Linux Administration
• Active Directory
• DNS
• Domain Services
• Domain Join
• Domain Controller Promotion
• VMware
• System Hardening
• Security Baselines
• GPO Implementation
• Patch Management
• Firmware Updates
• Troubleshooting
• Root Cause Analysis
• Testing

Job areas

• Technology
• Software