Senior System Administrator

Senior Systems Administrator (Enterprise Infrastructure)

• CANDIDATE MUST LIVE IN PHILADELPHIA OR WITHIN A 20 mile radius

We are working with a rapidly growing, well-established technology company who is seeking a Senior Systems Administrator to join a growing IT team. This role will serve as a hands-on technical expert supporting core Windows-based infrastructure while helping establish best practices, standards, and long-term stability across the environment.

This is an excellent opportunity for someone who enjoys owning infrastructure, improving processes, and being a go-to technical resource.

Key Responsibilities

• Administer and support Active Directory / Azure AD (Entra ID) environments
• Group Policy design, implementation, and troubleshooting
• Identity, access, and directory services management
• Lead Windows Server administration, including:
• New server build-outs
• Upgrades and lifecycle management
• Establishing best practices and operational guidelines
• Manage and support VMware infrastructure
• vCenter, ESXi, and virtual machine performance
• Oversee backup and recovery operations
• Veeam configuration, monitoring, and testing
• Support and maintain storage and SAN environments
• Implement and maintain monitoring solutions to ensure system performance, availability, and reliability
• Troubleshoot complex infrastructure issues and provide root-cause analysis
• Document systems, configurations, and procedures to support operational consistency
• Collaborate with internal teams to support enterprise applications and infrastructure needs

Required Experience & Skills

• Strong experience with Active Directory / Azure AD (Entra ID)
• Deep knowledge of Windows Server administration in enterprise environments
• Hands-on experience with VMware (vCenter, ESXi)
• Experience supporting backup solutions (Veeam preferred)
• Working knowledge of storage and SAN technologies
• Experience with infrastructure monitoring tools
• Ability to work independently, prioritize effectively, and communicate clearly with technical and non-technical stakeholders

Nice to Have (Not Required)

• Azure infrastructure experience
• Microsoft 365 administration
• Intune and/or SCCM exposure
• PowerShell scripting and automation
• Experience in hybrid cloud environments