Sr Systems Administrator

Seeking an experienced Systems Administrator to manage and support enterprise Windows/Linux infrastructure, virtualization, security, and cloud services. This role involves troubleshooting complex issues, maintaining secure and reliable systems, and supporting infrastructure upgrades and automation initiatives., * Administer Windows Server environments, VMware virtual machines, Active Directory, Group Policy, and related services.

• Deploy and manage CrowdStrike endpoint security agents.
• Perform server patching, security hardening, vulnerability remediation, and performance monitoring.
• Troubleshoot infrastructure issues, conduct root cause analysis, and serve as a senior technical escalation resource.
• Automate administrative tasks using PowerShell and other scripting tools.
• Support infrastructure migrations, upgrades, storage, backup, and disaster recovery initiatives.
• Maintain technical documentation and collaborate with infrastructure and cybersecurity teams.

• 7+ years of systems administration or infrastructure engineering experience.
• Advanced Windows Server administration, including Active Directory, Group Policy, DNS, DHCP, and file services.
• Strong experience with VMware vSphere/ESXi or Hyper-V virtualization.
• Working knowledge of Linux administration in mixed environments.
• Understanding of TCP/IP, VLANs, firewalls, certificates, and network troubleshooting.
• Experience with server hardening, patch management, vulnerability remediation, privileged access, and cybersecurity best practices.
• Proficiency in PowerShell scripting and automation.
• Experience with infrastructure monitoring, alerting, capacity planning, performance troubleshooting, and root cause analysis.
• Experience leading server migrations, infrastructure upgrades, and hardware refresh projects.
• Ability to develop technical documentation, system diagrams, SOPs, build standards, and disaster recovery procedures.
• Strong communication, collaboration, and mentoring skills, including working with networking, security, engineering, and business teams., * Bachelor’s degree in IT, Computer Science, or a related field; equivalent experience considered.
• Certifications such as Microsoft Windows Server Hybrid Administrator, Azure Administrator, VMware VCP, Red Hat RHCSA/RHCE, or CompTIA Security+.
• Familiarity with ITIL, NIST, CIS, and CMMC frameworks.