Systems Administrator II: Hybrid Onsite/Remote Support

Cross Companies; Tulsa (OK); On-site; USD 65,000 - 90,000; Full time

Job summary

Cross Companies seeks a Systems Administrator II to provide tier-2 support and hands-on system administration for clients. You will monitor, deploy, and maintain physical and virtual IT infrastructure, with on-call rotation and occasional travel to client sites.

The role emphasizes high availability, 24/7 support readiness, and documentation standards in a data center environment. Applicants should have strong Hyper-V, Windows Server, Office 365, and network security experience.

Qualifications

• Advanced virtualization expertise (Hyper-V) and Windows Server administration required.
• Strong Office 365 experience and cloud services knowledge expected.
• Experience designing/troubleshooting production networks and security architectures.
• Proficient with firewall configurations, IPsec VPNs, NAT, ACLs, and remote access.
• Ability to communicate issues and resolutions to customers and internal teams.

Responsibilities

• Respond to Tier-2 issues via phone and email.
• Troubleshoot and resolve problems remotely and onsite.
• Provision and deploy server and network environments for clients.
• Maintain system and process documentation.
• Participate in 24/7 on-call rotation.
• Occasional travel to customer sites for project work.

Skills

Hyper-V virtualization

Windows Server administration

Office 365

Networking design/troubleshooting

Firewall/IPsec/VPN/NAT/ACLs

Azure/Microsoft cloud

Education

High school diploma or GED

Tools

Active Directory

Remote Desktop Services

Job description

Cross Companies seeks a Systems Administrator II to provide tier-2 support and hands-on system administration for clients. You will monitor, deploy, and maintain physical and virtual IT infrastructure, with on-call rotation and occasional travel to client sites.

The role emphasizes high availability, 24/7 support readiness, and documentation standards in a data center environment. Applicants should have strong Hyper-V, Windows Server, Office 365, and network security experience.