System Administrator (Infrastructure & Operations)

We are hiring a System Administrator (Infrastructure & Operations) for one of our clients in the technology-driven enterprise space. This role is critical in maintaining and enhancing a global IT ecosystem that spans end-user systems, core infrastructure, and cloud platforms.

You will work closely with cross-functional IT teams to ensure system stability, scalability, and performance, while also driving improvements across infrastructure, identity management, and operational processes.

Responsibilities

• Administer and support Windows Server environments, Active Directory, and Group Policy
• Manage and troubleshoot Microsoft 365 (O365) including user provisioning, Exchange Online, and licensing
• Support Azure AD / Entra ID, identity access management, and hybrid environments
• Oversee patch management, system updates, and endpoint compliance
• Collaborate on VoIP systems (8x8 or similar) including configuration and issue resolution
• Assist in managing network-integrated services (DNS, DHCP, VPN, firewalls in coordination with network team)
• Support security tools such as Zscaler, Proofpoint, and endpoint protection platforms
• Maintain and optimize virtualized environments (VMware/Hyper-V)
• Participate in data center operations, backups, and disaster recovery processes
• Drive documentation and process improvement across IT operations
• Act as escalation point for Tier 2/3 issues from helpdesk

• 5+ years of experience in System Administration (Windows-focused)
• Strong experience with:

• Active Directory & Group Policy
• Microsoft 365 / Exchange Online
• Azure AD / identity management

• Experience with VoIP systems (8x8, Teams Voice, etc.)

• Familiarity with endpoint management and patching tools

• Exposure to networking fundamentals (DNS, DHCP, VLANs, VPNs)

• Experience with security platforms (Zscaler, Proofpoint, or similar)

• VMware or Hyper-V administration

• Backup solutions (Veeam or similar)

Preferred Skills *

• Experience working in hybrid cloud environments
• Strong troubleshooting and root cause analysis skills
• Ability to work in a fast-paced, globally distributed environment
• Excellent communication and documentation skills

Ready to make an impact?

The AES Group is a premier technology staffing and services company that has been bringing businesses and talent together for over 20 years to deliver innovative technology solutions that create meaningful impact. AES helps enterprises, including Fortune 500 organizations, engage customers, empower employees, and transform operations through cloud, data, AI, and emerging technologies.